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7/30/2019 The Determinants of the Term Premium in the Term Structure of Interest Rates
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Research Journal of Finance and AccISSN 2222-1697 (Paper) ISSN 2222-Vol.4, No.5, 2013
The Determinants o
Emmanuel
School of Busin
ananeemmanuel@yah
ABSTRACT
In support of the recent U.S eviden
varying and the conditional variance premium implicit in the U.S. econom
as a determinant of the term premium
Keywords: Term Premium, Yield Sp
1.0 INTRODUCTION
The uncertainties associated with t
researchers and practitioners. Unders
certain areas in the economy like th
public debt, formation of expectatio
securities, interest rate derivatives val
The term structure of interest rate
compensation for being exposed to
Merton,1983, explains that( Lee San
respect to how they are hedged aga
macroeconomic state variables to unc
the state variables also changes over t
Research conducted by Shiller (1979)
time-varying risk premium of the ter
unemployment rates, yield spreads a
of excess returns aid the explanationstudies are; Engle 1982; Engle, Lillie
like Breden 1986;Campbell 1986,19
realized that the expectations hypothe
varying. Investors require risk premiu
risk premium may reduce the numbe
of a bank and financial companies.
calculate a correct risk premium for b
Interest rates are very volatile and
Merton’s model, the model of Vasi
unting 847 (Online)
181
the Term Premium in the Ter
Interest Rates Anane1, Eugene Okyere-Kwakye2 Twum Amankwaa
ss Administration, All Nations University College (A
P.O. Box KF1908. Koforidua, Ghana.
oo.co.uk , [email protected], twumas122
e, the Garch methodology reveals in two fold that,
s of the yield spread, money supply and the exchany. However the impact of the conditional variance of
is felt only for longer maturity bonds.
ead, Money Supply, Exchange Rate, Industrial Produ
e term structure of interest rates have gained m
tanding how yields changes with time as well as it
e conduct of monetary policy, and investment secto
s about real economy activity and inflation, risk ma
ations.
takes into account the risk premium that are r
different sources of macroeconomic risk. The CA
-Sub, May 1995) risk premium are the prices of ris
nst the shocks related to some state variables in th
ertainties makes it varies over time and therefore the p
me. Consequently, the risk premium on assets in gen
; Pesando (1975); Mankiw and Summers(1984); Nel
structure of interest rates paid attention to the firs
d the level of interest rates. Studies nowadays emplo
f the intuition relating to the rejection of the expectatiand Robbins 1987; Engle, Ng and Rothschild 1990;
87 directed their minds to the equilibrium asset pr
sis have failed and the term premium in the term struc
m for the risk that they take in investing in securities
of investors and overstating the risk premium may l
esearching into the macroeconomic determinants of
oth investors and firms.
unpredictable despite various economic models in
ek, Ho and Lee, Hull and White, Black Derman
www.iiste.org
Structure of
3
NUC),
yahoo.com
the term premium is time
e rate determines the termindustrial production index
ction Index.
ch attention by academic
volatility is necessary for
s such as the financing of
nagement of a portfolio of
equired by investors as a
M in finance congrats to
built in assets priced with
e economy. Subject of the
rices of risk that depend on
ral, varies over time, too.
on (1970) to determine the
moments of variables i.e.,
y the conditional variances
on theory. Example of suchand Lee 1995. researchers
icing models because they
ture of interest rates is time
like bond. Understating the
ead to a collapse and a loss
he term structure will help
luding Heath, Jarrow and
and Toy(BDT),and Black-
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Research Journal of Finance and AccISSN 2222-1697 (Paper) ISSN 2222-Vol.4, No.5, 2013
Karasinki. The macroeconomic vari
prediction.
There has been a lot of research o
researchers neglect the effect on the
necessary to see the combined effect
the term structure of Interest rates.
1.6 OVERVIEW OF THE UNITE
THE UNITED STATE MONEY M
The U.S. has the world largest GDP
private firms make the majority of
economy maintains a high capita GD
of research and development investactivity, attempting to maintain stea
government uses powerful tools to f
fiscal policy or managing the money
slowing down or speeding up the e
( Source-Wikipedia-the free encyclop
The U.S. bond market is the largest
sector, agency sector, municipal sec
treasury sector is made up of securit
included in these securities. The tre
interest rate in all parts of the world.
issued by the treasury department. ThIn effect, interest rates on the treasur
Finally because the treasury departme
concern, it is regarded as the most act
of the fixed income market, which
Individual investors mostly do not g
However, small investors resort to m
pool the resources of most investors a
of treasury bills, certificate of depo
federal funds, broker’s calls, the libo
money market instruments. Treasury
order to raise money. What investors
maturity, the bill holder gets from t
calculated as the difference between
initial maturities with which t-bills a
which does not contain much risk. Tr
government securities dealer. A dis
instrument is that the income earned
sell in minimum denominations of
denomination of $100000.
Source: Frank J. Fabozzi. Bond mar
fixed income securities. Seventh editi
unting 847 (Online)
182
bles that causes such changes should be investigate
the effect of monetary policy and yield spread o
conditional variance of excess return on the term st
of monetary policy, yield spread and the conditional
D STATES ECONOMY, THE UNITED STATE
RKET.
around $13.21 trillion and has a mixed economy w
microeconomic decisions while being regulated by
, a reasonably high GDP growth rate, a low unemplo
ent. The federal government attempt to guide thedy growth, high level of employment and price st
rward a growth and stability agenda. Adjusting spe
supply and controlling the use of credit through m
conomy’s rate of growth, which affect the level of
edia).
ond market in the world. It is divided into six sector
tor, corporate sector, asset-backed securities sector,
es that are issued by the U.S. government. Treasur
asury sector being the largest issuer of securities i
he government of the United States with credit and
is makes market participants around the world see thy securities serve as the benchmark interest rates in
nt issues the largest size of securities as far as the tre
ive and the most liquid in the world. The united state
consists of very short-term debt securities that are
t access to most of these securities because they tr
oney market funds. The way in which money marke
nd buy many money market securities on their behalf.
sit, commercial papers, bankers acceptances, Eurod
r market. The united state treasury bills are the mos
ills are seen as a form of borrowing. The governme
do is that they purchase bills at a discount from the m
e government a value same as the face value of t
the purchase price and the ultimate maturity value.
re issued-bills are converted to cash with ease and
easury bills can be bought directly, at auction, or on t
inguishing feature that distinguishes Treasury bill
on treasury bills is exempt from all state and local ta
10000, unlike most other money market instrume
et analysis and strategies. Sixth edition and Frank J.
n
www.iiste.org
d in order to get a correct
the term structure. Most
ucture. It is therefore very
ariance of excess return on
BOND MARKET AND
ere corporations and other
the government. The U.S.
ment rate, and a high level
overall pace of economic bility. At its disposal, the
ding and tax rates through
netary policy. This end up
prices and unemployment
s namely, the U.S. treasury
and mortgage sector. The
bills, notes and bonds are
the world determines the
ull faith supports securities
m as having no credit risk.he United States economy.
sury market in the world is
money market is a division
marketable in high sense.
de in large denominations.
t funds operate is that they
. The money market consist
ollars, repos and reserves,
marketable security of all
t sells bills to the public in
aturity value stated. During
e bill. Investors earning is
28, 91, or182 days are the
re sold at low action cost,
e secondary market from a
from other money market
es. Moreover treasury bills
ts which sell in minimum
Fabozzi. The handbook of
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Research Journal of Finance and AccISSN 2222-1697 (Paper) ISSN 2222-Vol.4, No.5, 2013
1.7 MACROECONOMIC VARIAB
The purpose of this research is to istructure of interest rates in the unite
likely factors to posses the power of
with previous research such as Camp
David M. Lillien, and Russel P. Rob
Rothschild 1990; and Lee 1995. Empi
structure of interest rates and partly h
TERM STRUCTURE
The term structure of interest rates
function that relates the interest rate
until the maturity date. Exploring thefor the pattern and determines what i
relationship that exists between short
term interest rates as a lever on the r
operations, which help influence the r
different behavioral hypothesis about
INDUSTRIAL PRODUCTION IN
The Industrial Production Index is an
percentage of real output with base y
with the weights based on annual e
construction, accounts for the bulk production index is the most import
frequency the difficulties of industri
index helps to identify the turning
production index is one of the most i
production index for the United Stat
database.
MONEYSUPPLY
In financial economics, monetary ag
in bank accounts in the hands of the
serving as securities. The relationshipmoney. The two are related inversely,
equals the quantity of money demand
money market equilibrium. The mark
Supply and demand give rise to a pri
sum of long-term interest rate or free
The Federal Reserve manipulates the
of monetary aggregates is to take int
financial accounts and all printed-pap
unting 847 (Online)
183
LES SELECTION AND DESCRIPTION
entify the macroeconomic variables that are signifid state economy. Four macroeconomic variables hav
xplaining the term structure of interest rates. This h
ell (1995), Shiller (1990); Melano (1988) Laurence J
ins 1987; Walid Hejazi, Huiwen lai and Xian Yan (
rical literatures have shown that these variables have
ve unique association with the United States econom
escribes how a bonds yield changes as the bonds
o the term. The term of a debt instrument with a fix
pattern of interest rate for different term assets identiformation may be derived from the term structure of i
rates and long rates is that most central banks at a ce
eal economy. Monetary authorities accomplish this b
ate of inflation. Behavior of interest rates and bond pr
market participants and market efficiency.
EX
economic indicator, which measures real production
ear currently at 2002. Production indexes are comput
stimates of value added. This index, along with o
f the variation in national output over the durationant business indicators in the short term, which aim
al production during the long period. Monthly surv
points in economic development at an early stage;
portant measures of economic activity. Below repre
s data between the periods January 1921 to July 20
regates or money supply or money stock is the quan
on-bank public available within the economy to buy
between the rate of interest and money is that the rasuch that, a rise in money supply decreases interest r
ed with the quantity of money supply, the economy i
et of money demand utilizes the tools of analysis that
e known as equilibrium price. A price is said to be in
market and the quantity of available real money bala
Short-term interest rates artificially. An accurate way
o account of all-electronic, credit-based deposit bala
er and minted coins.
www.iiste.org
antly influencing the termintuitively been chosen as
s mainly been done in line
ay Mauer, Robert F. Engle,
Feb 2000) ; Engle, Ng and
a relationship with the term
.
aturity changes. It gives a
d maturity date is the time
fies the factors that accountnterest rates. An interesting
rtain times influence short-
y engaging in open market
ces are necessary in testing
output. It is expressed as a
ed mainly as fisher indexes
her industrial indexes and
of the business cycle. Thes to measure at a monthly
y on industrial production
also the timely industrial
sent the graph of industrial
7 taken from st. Louis fed
tity of currency and money
items, render services, and
te of interest is the price of ates. When the interest rate
s said to be operating at the
are similar to other markets.
equilibrium price when the
ces the demand for money.
for calculating the concept
ces in banks accounts and
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Research Journal of Finance and AccISSN 2222-1697 (Paper) ISSN 2222-Vol.4, No.5, 2013
EXCHANGE RATE
In financial economics, exchange ratconcern. A typical case is an exchan
means that GBP 123 has a value equ
show that, around 2 trillion USD val
market is termed as the Spot exchan
delivery and payment on a certain fut
for international trade. The dollar-po
importing raw materials and other i
hence the amount of interest paid, thu
have given its explanatory power on t
YIELD SPREAD
Yield spread is the differences in yiel
credit rating, and interest rate change
on two different investments, usually
the percentage return on investment
financial instrument A minus in a y
offered by each of the instruments.
maturities, credit ratings and risk. On
indicates the risk premium that an i
product. When yield spreads between
more risk of default on lower grade b
EXCESS RETURN
Excess return is the difference betwee
It is also termed as the returns in e
market measure such as Dow Jones.
EXCESS HOLDING YIELD OF 6 MONTH I I
-0.003
-0.002
-0.001
0
0.001
0.002
0.003
0.004
0.005
0.006
1
9
6
4
1
9
6
4
1
9
6
5
1
9
6
6
1
9
6
7
1
9
6
8
1
9
6
9
1
9
6
9
1
9
7
0
1
9
7
1
1
9
7
2
1
9
7
3
1
9
7
4
1
9
7
4
1
9
7
5
1
9
7
6
1
9
7
7
1
9
7
8
1
9
7
9
1
9
7
9
1
9
8
0
Y
P E R C E N T A G
E S
unting 847 (Online)
184
e between two currencies shows the value of one cue rate of 123 Great Britain pound (GBP, $) to the
al to USD 1. The exchange rate is one of the largest
es of currency changes hands every single day. The
e rate. Exchange rate that is announced and traded
ure date is termed as forward exchange rate. The US
nd exchange rate is therefore important since this is
puts. The exchange rate therefore affects business
s it is hypothesised that exchange rate will relate risk
e time varying risk premia
ds so far as different types of debt securities, a func
s are concern. Technically, it is the difference betwee
of different credit quality. The yield spread of A over
from financial instrument B from the percentage
ear. The higher the yield spread, the greater the dif
The spread can be measured between debt instr
e way of comparing any two financial products is the
vestor gets when he choose one investment produc
bonds of unequal quality rates widen, it means that th
nds.
n the actual wealth and expected wealth at the end of
cess of those required by some pricing model, or a
I I S T-BILL AS COMPARED TO 3 MONTHS T-BILL
1
9
8
2
1
9
8
3
1
9
8
4
1
9
8
4
1
9
8
5
1
9
8
6
1
9
8
7
1
9
8
8
1
9
8
9
1
9
8
9
1
9
9
0
1
9
9
1
1
9
9
2
1
9
9
3
1
9
9
4
1
9
9
4
1
9
9
5
1
9
9
6
1
9
9
7
1
9
9
8
1
9
9
9
1
9
9
9
EARS
EXHR(6,3)
www.iiste.org
rency as far as the other isnited state dollar (USD, $)
markets globally. Statistics
urrent exchange rate in the
oday in the market but for
Dollar is the main currency
translated into the cost for
ash flow, investments and
premia. Empirical evidence,
ion of supply and demand,
n the quoted rates of return
is obtained by subtracting
return on investment from
ference between the yields
ments that have different
use of their yield spread. It
over the other investment
e financial market is giving
a certain measurement time.
risk free return or a given
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2.0 THEORETHICAL FRAMEW
2.1 THE EXPECTATIONS THEO
Assuming that by the principle of ri
what their maturity, the expected one
and would be equal to the known saf
the risk premium is zero for all mat
pure expectation hypothesis in that th
all information at time t whereas thethere is uncertainty related to the retu
to depend on some form of reward fo
The basic assumptions, which constit
1. The term premium is constant over
2. The term premium is
A combination of the expectation h
gives a variance inequality such that
be greater than or equal to the one p
return should be the same for differen
The theory concerning the expectatio
(1995), Shiller (1990); Melano (198
explains that agents that hold ration
attributed to two reasons. Either time
errors, which appear biased when vi
line with this study. Researchers like
used Canadian government Treasur
researchers for the expectation theory
and Hardouvelis (1994), Gerlach and
EXCESS HOLDING YIELD OF 12 MONTHS
-0.010
-0.005
0.000
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
1 9 6 4
1 9 6 5
1 9 6 7
1 9 6 9
1 9 7 1
1 9 7 2
1 9 7 4
1 9 7 6
1 9 7 8
1
P E R C E N T A G
E
unting 847 (Online)
185
RK
Y OF THE TERM STRUCTURE OF INTEREST
k neutrality all agents are only concerned with expe
period HPR over say one month or one quarter on al
return of a one period asset. This gives the pure ex
rities. Adding the assumption of rational expectatio
e ex post excess holding period yield should have a ze
esidual Should be serially uncorrelated. It is a very r rn on holding a long bond for one period, the excess
risk. This reward for risk is the term premium.
te the expectation hypothesis, are
time.
independent on the term to mat
pothesis and the real expectation coupled with a ti
the variance of the one period holding period return
eriod safe rate. It can also be explained that the vari
maturity bonds.
n hypothesis has gained a lot of attention by resear
8) has rejected the expectation theory of the term
l expectations and term premia are time invariant.
-varying term premia caused the rejection or the reje
wed ex-post. Most of these researchers used the Uni
Pesando (1978), Gregory and Voss (1991), Johnson
bill and Treasury bond data in support of the ex
for different countries apart from the united states an
Smets (1997a,b).
-BILL AS COMPARED TO 3 MONTHS T-BILL
7 9
1 9 8 1
1 9 8 3
1 9 8 5
1 9 8 6
1 9 8 8
1 9 9 0
1 9 9 2
1 9 9 3
1 9 9 5
1 9 9 7
1 9 9 9
YEARS
EXHR(12,3)
www.iiste.org
RATES.
cted return, then no matter
l bonds would be the same
ectations hypothesis where
gives a simple test of the
ro mean, be independent of
asonably assertion becauseolding period return ought
rity of the bond.
e invariant term premium
n an n period bond should
ance of the excess holding
hers. Studies by Campbell
structure of interest rates
he rejection can either be
ction is because of forecast
ted States data, which is in
(1993) and Kingler (1990)
ectation hypothesis. Other
Canada are Kugler (1990),
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Research Journal of Finance and AccISSN 2222-1697 (Paper) ISSN 2222-Vol.4, No.5, 2013
Pesando (1978) identified that the ch
when he used quarterly interest rate d
Gregory and Voss (1991) using quart
like forward premium, the premium o
Johnson (1993) identified that when
well as the spread between internatio
Canadian and the united states treasu
conclusion when he used Canadian a
1971 to 1988.He further argued that
far as Canada and the united states ar
The arguments raised above calls for
time varying risk premia.
Walid Hejazi, Huiwen lai and Xian Y
The long-term rate say K period can
plus a premium. Then mathematically
k
t
k
i
it t
k
t Y E k
Y θ += ∑−
=
+
1
0
11
...................
Where
k
t Y Represent the yield to maturity o
t E Represent the markets expectatio
k
t θ Represent the expected excess re
premium component.
∑−
=
+
1
0
11 k
i
it t Y E k
Represent the expectati
So far as the expectation hypothesis i
t. Assumek
t H 1+ is the investors reali
that begins with time t, in excess of th
11
11 )1( t
k
t
k
t
k
t Y Y k kY H −−−=−
++ …
This linearization is appropriate for di
For pure discount bonds, the time-var
unting 847 (Online)
186
nges in Canadian long-term interest rates are well ap
ata on Government of Canada long -maturity bonds fr
rly priced data between 1961 and 1988 explained th
n three and six months Canadian treasury bills can be
both the spread between the Canadian long-term an
al yields are used, the significant difference that exis
ry bonds of maturity two, ten and twenty years are p
d the united states treasury bills of maturity two, ten
is evidence suggest that there is no equalization in th
concerned.
an equation for testing the expectation hypothesis i
n (Feb 2000) deduced an equation for performing suc
always be written as an average of expected future
the yield for pure discount bond purchased at time t c
.... (1)
a K period pure discount bond.
conditional upon information available at time t.
urn on holding a long bond relative to rolling over sh
n component. This serves as the rolling premium.
s concern the rolling premia vary with the maturity k
zed one period excess return when he holds a k peri
at to holding a one period bond. Expression this in an
............. (2)
scount bond (shiller 1979, 1990; or shiller, Campbell,
ing expected excess return is defined as
www.iiste.org
roximated by a martingale
om 1961 to the period 1976.
t using current information
predicted.
short-term interest rate as
t between excess returns on
redictable. He came to this
and twelve over the period
e long term bond returns so
searching for evidence of
h task. According to them,
short rates says one period
an be written as
ort bond. This serves as the
but does not vary with time
od bond for a single period
equation gives
and schoenholtz 1983).
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Research Journal of Finance and AccISSN 2222-1697 (Paper) ISSN 2222-Vol.4, No.5, 2013
1 )1( t
k
t
k
t t
k
t Y E k kY H E −−==+
φ
Equation (3) is the term premium.
Term premium are observed i
)[1( 1
1
11 +
−
++ −−−=k
t t
k
t
k
t
k
t Y E Y k H φ
plus a single period forecast error. A
the long-term interest rate is containe
spread. Mathematically,
10
1
1 ())(1( −
+ +=−−k
t
k
t
k
t Y bbY Y k
k
t ob φ −= 11 =b
Rearranging gives
1
1
11 )(++
+−+= t t
k
t o
k
t eY Y aa H
Where=
+1t ek
t
k
t Y k −−−−
+
1
1)(1(φ
According to the expectation hypothe
Equation (6) is use in the testing of th
can be seen clearly how equation (6)
ex-ante that forecast errors are orthog
serves as an indicative of time-varyin
2.2 THE ECONOMIC THEORY
VARIABLES AND THE TERM ST
The theory as to what determines th
economists. whiles some think mon
others think industrial production ind
interest rates. However recent studi
determines the term structure of inter have some link with the term structu
using different methods which includ
ARCH in mean or the GARCH appro
Walid Hejazi, Huiwen lai and Xian
Canadian T-bill term structure of inte
on Canadian treasury bills with one to
state treasury-bill during the same ti
conditional variances of industrial pr
determinants of excess returns. On t
unting 847 (Online)
187
11
1 t
k R−−
+ … (3) = TERM PREMIUM
the presence of forecast errors. A typical
]1
........... (4) Where excess return is decomposed int
cording to the expectation hypothesis, the markets be
in the spread between the long K period yield and th
1
1) ++ t t uY ………………….. (5)
…………………….. (6)
o
k
t t a R E −−
+
1
1
sisk
oa φ =and
01 =a
e expectation hypothesis in searching for evidence of
an be split into premium component and forecast erro
onal to available information, Estimated values of 1a
risk premia.
N THE ASSOCIATION BETWEEN INDIVIDU
RUCTURE OF INTEREST RATES.
term structure of interest rates has been of differen
tary aggregates is a strong determinant of the term
ex, yield spread, excess returns have a strong linkag
es are of the view that all the macroeconomic i
est rates. Another school of thought is of the view thre of interest rates. This has been tested by different
the Value at Risk approach, the linear regression app
ach.
Yan (Feb 2000) examined the determinants of the t
rest rates. They used monthly data over the period J
three months to maturity. In order to enhance their a
e periods for comparison. Their result s using Cana
oduction, the money supply and the exchange rates a
e other hand, the level of yield spread and the con
www.iiste.org
case is the equation
o a sum of a term premium
st forecast of the change in
e short period yield or yield
ime varying risk premia. It
r component. Assuming
that are not equal to zero
L MACROECONOMIC
t views by researchers and
structure of interest rates,
with the term structure of
dicators mentioned above
at microeconomic variableseconomist and researchers
roach and the Engle (1982)
erm premia implicit in the
ly 1960 to December 1995
alysis, they used the united
dian data indicates that the
re statistically insignificant
ditional variance of excess
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returns themselves do contain statisti
state data, they found that the conditi
significant determinants of excess retyield spread is also significant pre
disappears, however, when these ad
conditional variance of the money su
in the Canadian term structure are re
and surprisingly, they saw a statistic
supply and the term premia implicit i
the united states evidence, the second
treasury bill t of maturities of two an
the level of yield spread do contain s
varying risk premia in the Canadian
macro economy as measured by their
insisted that there is important link b
and therefore the determinants of the
Lee Sang-Sub ( May 1995) investi
structure of interest rates, based upo
advance constraint using monthly un
advance constraint combined with ge
the model derives the risk premium
nominal term structure depending on
money supply, measured by their con
and the money supply are important s
He also found out that the Garch co
supply are significant in all the risk p
the monthly excess return under inve
supply remain significant when yield
which contains information about t
macroeconomic factors.
Paul Boothe (August 1991) used co
evaluate a model of the term structur
with the hypothesis of high or perfe
States assets of comparable maturity.
and long interest rates, which was co
Carlos Del Castillo and Jean- Franco
2000 tested a theoretical model expla
degree of risk aversion and the deg
variance of consumption growth. Th
significant in an econometric equatio
Laurence Jay Mauer using six month
commercial bank maturity behavior t
hypothesis, which stresses the impo
structure of interest rates; again to a
unting 847 (Online)
188
cally significant information for excess returns. On
nal variance of both industrial production and the m
rns. The conditional variance of excess returns themsdictors of excess returns. The conditional varianc
itional conditional variances are added. Also, the c
ply falls dramatically. They pursue the possibility tha
lated to the conditional variances of the united state
lly significant link between the conditional variance
the Canadian t-bill term structure. They therefore c
moments of macroeconomic variables are not signifi
three months. On the other hand the conditional va
me important information for excess returns. Althou
reasury bill term structure, these premia are not relate
conditional variance of industrial production and the
etween the U.S. money supply and the Canadian ter
erm structure of interest rates of the two countries are
ated the macroeconomic sources of the time-varyi
n a monetary general equilibrium model of the ter
ted states term structure data for one to six months
eral time series representations of the relevant macro
expression that succinctly describes the relationship
the uncertainties related to the macroeconomic forci
ditional variance-covariance_s. Lee found out that un
ources of time-varying risk premia in the nominal ter
nditional variance estimates of the industrial produ
emium equations examined and they also show signif
stigation. The conditional variance of industrial prod
spread is added to the risk premium equation. He also
e risk premium, have significant explanatory pow
integration tests and two different sets of Canadian
of interest rates in an open economy. He found out t
t substitutability or uncovered interest parity betwee
However, he found mixed support for the hypothesi
trary to the findings of Engle and Granger and Camp
is Fillion (October 2002) using three months forwar
ining the term premium. They found out that, the ter
ee of persistence in consumption growth and on o
y found out that, the conditional variance of consum
of excess returns.
s maturity class and seven to twelve month maturity
owards the term structure of interest rates. His aim w
rtance of expectations of future yields as a deter
so verify the liquidity hypothesis, which emphasize
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the contrary, for the united
ney supply are statistically
elves as well as the level of e of industrial production
oefficient estimates on the
t the term premium implicit
s macroeconomic variables
of the united states money
ncluded that ,In contrast to
ant predictors on Canadian
iance of excess returns and
h there is evidence of time
d to the uncertainties in the
money supply. They again
structure of interest rates
different.
g risk premia in the term
structure with a cash in
treasury bill with a cash in
economic forcing variables,
between risk premia in the
g variables, output and the
certainties related to output
structure of interest rates.
tion index and the money
icant explanatory power for
ction index and the money
found out that yield spread
r, despite the presence of
nd the united state data to
at the data were consistent
n Canadian and the United
s of co integration of short
ell and Shiller.
interest rate from 1960 to
premium depends on the
e variable, the conditional
ption growth is statistically
class analyzed the effect of
as to verify the expectation
inant of the present term
s the greater moneyness of
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short-term debt as opposed to long-te
that both the liquidity and expectation
Arturo Estrella and Frederic S. Mis
monetary policy instruments and to s
results show that monetary policy is
only determinant. In addition, they fo
Rodrigo Sekkel and Denisard Alv
macroeconomic shocks on the dynam
policy shocks flattens the term stru
Nevertheless, they found that monet
dynamics of the term structure than
importance of the standard macroec
structure of Brazil.
2.3 THE THEORETICAL DERIV
A methodology by Engle et al (198
methodology, the conditional varianc
model using 3-month and 6-month
concluded that that risk premia vary s
research, I generate measures of the
months treasury bill over 3 months a
I used monthly observation as done
Xian Yan (Feb 2000). This is in repl
standard deviation of the error term ia micro-founded model with risk-aver
Below is a generalization of the work
to determine the time varying risk
decompose the excess holding yield i
t t t E ε µ +=………………………
Where t E =excess holding yield on
t µ =risk premium or the exp
long-term asset. This parameter is no
t ε
=difference between the e
This signifies that the expected exces
Expressing the risk premium in an eq
t t hu δ β +=……………………..
unting 847 (Online)
189
m debt. After their estimation and analyses, they fou
theories are consistent with the data.
kin (1995) examined the relationship of the term s
bsequent real activity and inflation in both Europe a
an important determinant of the term structure sprea
nd a significant predictive power for both real activit
s using near-VaR estimation identified the effect
ics of the Brazilian term structure of interest rates. T
ture of interest rates, which is similar to that of t
ary policy shocks in brazil appear to explain a sig
in the united states of America. Furthermore, the
onomic variables, such as Gross domestic product
TION OF THE TIME VARYING RISK PREMIA
) known as the Arch -M model is use to determin
e of excess return determines the current risk premi
U.S. Treasury bill rate between 1960 to 1984.The
ystematically over time with agents perception of un
term premium by estimating the Arch-M model of
d 12 months bill over 3 months treasury bill betwee
y Pornpinun chantapacdepong (March 2007) and W
icates Engle et al (1982) methodology, which incorp
the mean equation of the excess holding yield.This, ise agents.
s of Pornpinun chantapacdepong (March 2007)
remia using the Arch-M model proposed by Engl
to
………................. (7)
6 months Treasury bill over the 3 months Treasury bil
ected return that the risk averse investor would expe
-static.
ante and ex post rate of return which cannot be fore
return from holding the longer-term asset is just equa
ation gives
8) ’ 0>δ
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d at microeconomic levels
ructure of interest rates to
nd the United States. Their
d, but is unlikely to be the
and inflation.
of monetary policy and
ey found out that monetary
e United States economy.
ificant larger share of the
e was an evidence of the
and inflation on the term
.
the risk premium. In this
m.. Engle et al tested their
y used quarterly data and
erlying uncertainty. In this
xcess holding return for 6
the period 1964 and 1999.
lid Hejazi, Huiwen lai and
orates expected conditional
ncorporates in pattern from
showing how
et al. The first step is to
.
t for holding such a riskier
asted in an efficient market.
l to the risk premium.
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Where t h =conditional standard devia
0>δ = the coefficient of th
The assumption behind is that the ris
unforecastable shocks ( t ε ).
2
t h =The conditional varianc
investors.
)(2
t t Var h ε =For all avail
A point of interest is that this model
variance2
t h .The main reason is that
in the mean. Researchers including
same specification.
According to Engle,et al (1987), it
innovations,2
t ε .The conditional varia
2
10
2
t it wh ε α α +=………………
This means that the variance of the
squared innovations, where iw Repr
every year I have 12 months and 13
the mean.
Pornpinun chantapacdepong (March
where 78
113 −=iw
And 11−=i
He noticed the declining weight sche
terms. The equation is therefore
2
2
11
2
78
11
78
12−−+++= t t ot h ε ε α α
The above equation including the one
)( t H E Depends on the conditional
unting 847 (Online)
190
tion of the unforecastable shocks t ε to the excess ret
relative risk aversion.
k premium is an increasing function of the condition
e of the error term and is a function of the informa
ble information.
takes the mean as a linear function of the standard
it is assumed that changes in the variance are reflect
omowitz and Hakko (1985), Engle, Wooldridge and
is assumed that the conditional variance is a wei
nce follows an ARCH(P) process below.
……………………… (9)
error term depends on the intercept oα and the w
esent the weighting parameters. I used monthly obs
ags on the assumption that the past years informatio
2007) Discounted the older information using a linear
.
e on lag structure aids in coping with the co linearit
2
1278
1......................
−+ t ε
………………………
s earlier analyzed concludes that the conditional mean
tandard deviation of the unforecastable error term.
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rn on the long-term asset.
al standard deviation of the
tion set that is available to
deviation t h
Instead of the
ed less than proportionality
Bollerslex (1988) used the
hted sum of past squared
ighted average of the past
ervations. This means that
n is essential for predicting
ly declining weight scheme
y of past square innovation
… (10)
of the excess holding yield
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t t t H E µ =−1 indicates that the ris
returns. On the assumption that the va
HYPOTHESIS
The following hypothesis are stated a
H1: The risk premia in the nominal te
related to the macroeconomic fo
measured by their conditional va
H2: The term premia implicit in the u
H3: The Garch conditional variance e
are significant in all the risk pre
power for the monthly excess ret
3.0 METHODOLOGY
This section presents the methods tha
all scientific work has to be replicabl
how the study is carried out, Hussey
Summers 1984; Nelson 1970 used fis
1987; Walid Hejazi, Huiwen lai andtaken into consideration, in the deter
this research, single equation regressi
on the first moment determinants of t
determinants of the time varying risk
independent variable are taken into c
is a sum of a term premium, and a s
expectation hypothesis in my single e
3.1 Sources of Data
Data for the study were mainly obta
industrial production index, U.S dollmonths and 12 months Treasury bills
data were collected from the st. Loui
using 432 monthly observations.
3.2 EXCESS RETURN GENERAT
Before generating risk premia, it is us
the assumption that excess return is d
excess holding yield return for holdi
months treasury bills as well as the e
return from holding consecutive 3-m
unting 847 (Online)
191
premium is an increasing function of the condition
riation of return measures riskiness.
ter the discussions above:
rm structure depends on the uncertainties
cing variables, output and the money supply
riance-covariances.
.s. term structure are time varying.
stimates of the industrial production index and M1
ium equations and show significant explanatory
rn.
t were used to collect and analyse data for this resea
e and this can be done only if the researcher gives a
and Hussey, 1997a. Researchers like shiller 1979;
t moments of variables, Robert F. Engle, David M. L
ian Yan (Feb 2000) used second moment where theination of the time-varying risk premia of the term s
on is used in testing for the expectation hypothesis. T
e term structure of interest rates. ARCH Model was
premia where the conditional variances of both the
nsideration. This helps identify the significant predic
ingle period forecast errors. It also explains the mai
quation regression test.
ined from secondary sources. Monthly macroecono
ar- G.B pound sterling exchange rate, money supply.were used in the calculation of the yield spread and th
s Fed economic research. The study covers the perio
ON AND DESCRIPTION
eful to explain in twofold how the properties of the e
ecomposed into a sum of a term premium plus a sing
ng a 6-month treasury bill compared to the return f
xcess holding yield return for holding a 12-month tr
onths treasury bills are calculated. The risk premia o
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al standard deviation of the
ch. The significance is that
laid down procedure as to
esando 1975; Mankiw and
llien, and Russel P. Robins
ir conditional variances aretructure of interest rates. In
his in other words focussed
used in the second moment
dependent variable and the
ors of excess return, which
reason why I rejected the
mic data collected include,
Spot rates on 3 months, 6e excess holding return. All
d of Jan 1964 to Dec 1999
cess return was obtain. On
le period forecast error, the
om holding consecutive 3-
asury bill compared to the
f the excess holding yields
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was generated as a result of the vola
(1987) where he used the treasury bill
the same methodology but he represtreasury bills are zero coupon bills w
par value to create a positive yield
procedure as done by Engle et al(19
in constructing the excess holding yie
)1(]1
2)^1([
1
3,6
t
t
t
t r r
R H +−
+
+=
+
This is approximated as
t t t t r r R H −−= +1
3,6
2
Where; the unit of time t stands for ev
t RIs the yield on a 6 month t
t r Is the yield on the 3 month
The descriptive statistics of the exces
see clearly the risk premia expected c
HISTOGRAM AND STATISTICS
The standard deviation is a measure
large standard deviation represents a l
the number of months. The mean (0.0
keeps investing in a shorter-term ass
return in time t+1.There is an eviden
the graph below in percentages how t
0
20
40
60
80
100
120
140
-0.0025 0.0000 0.0025
unting 847 (Online)
192
ility of excess holding yield. This methodology is si
to calculate for the risk premia. Pornpinun chantapa
nted the treasury bills with zero coupon bills with tich do not pay interest prior to maturity; instead they
to maturity. In my term premium estimations, I us
7), Dotsey et al(1995), Harris(2004), Pornpinun cha
d of 6- months over 3-months treasury bills. This is e
ery 3 months.
easury bill
Treasury bill.
holding yield of 6- months over 3-months treasury b
aracteristics.
f risk and it shows how the return series deviate fro
arge deviation in the return series of assets. The num
00342) is positive in sign .This indicates that an inve
et (3-months bill) for a year than buying a single 6-
e of a slight volatility as indicated by the standard de
e mean values of excess returns and standard deviati
Series: H
Sample 1964M01 1999M12
Observations 432
Mean 0.000342
Median 0.000288
Maximum 0.003987
Minimum -0.002261
Std. Dev. 0.000546
Skewness 1.144121
Kurtosis 14.79111
Jarque-Bera 2596.793
Probability 0.000000
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milar to that of Engle,et al
depong (March 2007) used
he understanding that U.S.are sold at a discount of the
d the same formula and
tapacdepong (March 2007)
qual to
ills shown below help us to
its mean. In that, sense a
er of observation indicates
stor would be better of if he
month t-bill that gives less
viation. It is also seen from
n increase with maturity.
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EXCESS RETURN (6)
Regressing the excess holding yield o
=3,6
t H 0.000342+ t e
In order to test for the robustness of
over 3 month’s Treasury bill rate. I
Harris(2004), Pornpinun chantapacde
3-months treasury bills. This is equal
1)(1)(1(
4)^1([
23
3,12
t t t
t t r r r
R H +++
+
=+++
This is approximated as
t t t t t r r r R H −−−−=+++ 123
3,6 4
Where; the unit of time t stands for ev
t RIs the yield on a 6 month t
t r Is the yield on the 3 month
The descriptive statistics of the exces
HISTOGRAM AND STATISTICS
-.003
-.002
-.001
.000
.001
.002
.003
.004
.005
1965 1970 1975 1980 1985 199
H
unting 847 (Online)
193
n a constant gives
y econometric results, it is necessary to construct the
did this in the same way as done in Engle et al(
pong (March 2007) in constructing the excess holdin
o
)1(])1
t r +−
t
ery 3 months.
easury bill
Treasury bill.
holding yield of 12- months over 3-months treasury
0 1995
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excess return of 12 months
1987), Dotsey et al(1995),
g yield of 12- months over
ills is as shown below
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It has a mean of 0.000667 which is po
keeps investing in a shorter-term ass
return in time t+1.
A Regression of the excess holding yi
=3,12
t H 0.000667+ t e
Standard deviation of 0.002011 indi
the mean values of excess returns and
EXCESS RETURN
3.4 METHODS OF ANALYSIS
ORDINARY LEAST SQUARE RE
Ordinary least square regression or si
According to Fama (1984; Mankiw (1
hypothesis. In this case, the spread be
0
40
80
120
160
200
-0.005 0.000 0.005
-.008
-.004
.000
.004
.008
.012
.016
1965 1970 1975 1980 1985 1
H
unting 847 (Online)
194
sitive in sign .This is an indication as to how an inve
et (3-months bill) for a year than buying a single 6-
eld on a constant gives
ates a slight volatility. It is also seen from the graph
standard deviation increase with maturity.
RESSION
gle equation regression was used in testing for the ex
986); Evans and Lewis (1994), yield spreads is the m
ween the long K-period yield and the short one perio
0.010 0.015
Series: H
Sample 1964M01 1999M12Observations 432
Mean 0.000667
Median 0.000504
Maximum 0.014878
Minimum -0.007746
Std. Dev. 0.002011
Skewness 1.621002
Kurtosis 16.70503
Jarque-Bera 3570.090
Probabi li ty 0.000000
990 1995
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stor would be better of if he
month t-bill that gives less
below in percentages how
ectation hypothesis.
thod mostly use in testing
yield is known as the
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yield spread, contains the markets bes
gives equation (6)
1
1
11 )(++
+−+= t t
k
t o
k
t eY Y aa H
For reasons attributed to Eviews com
11 +++= t o eYS aa H
Where oa and 1a are constant coeffi
According to the expectation hypothe
The expectations hypothesis assumes
THE GARCH AND THE ARCH I
Unlike the above methodology that
methodology that assumes the term p
autoregressive conditional heterosked
current error term to be a function of
to the square of a previous period's er
varying volatility clustering, i.e. per
assumed for the error variance, theBollerslev(1986)) model. The GAR
equation.
In replication of the works of Walid
the term premia. Excess return is expr
2
,1
2
,11 +++++= t y yst ysO
k
t B B B H σ σ
Where
y=log of industrial production index
m=log of money supply
ex=log of the dollar-pound exchange
ys= yield spread
H=excess return
O B=constant term
unting 847 (Online)
195
t forecast of the change in the long term interest rate.
atibility and simplicity, I rewrite the equation above
ients and YS= yield spread and H=excess return
sisk
oa φ =and
01 =a.
the term premium to be a constant term.
MEAN MODEL OF THE TERM PREMIA.
assumes the term premium to be a constant, Engle
remium to be time varying instead of being a consta
asticity (ARCH, Engle (1982)) model takes into consi
the variances of the previous period’s error terms. A
or. It is employed commonly in modelling financial ti
iods of swings followed by periods of relative cal
odel is a generalized autoregressive conditional hH-in-mean (GARCH-M) model adds a heterosked
ejazi, Huiwen lai and Xian Yan (Feb 2000), I used
essed as a linear function in the form
1
2
,1
2
,1 ++++++ t ext exmt m B B µ σ σ
ate
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riting and Rearranging
s
et al proposed the Garch
nt. In Financial economics,
deration the variance of the
CH links the error variance
me series that exhibit time-
.If an ARMA model is
teroskedasticity (GARCH,sticity term into the mean
the Arch in mean model of
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By=coefficient on the conditional va
Bm=coefficient on the conditional v
Bys=coefficient on the level of yiel
Bex=coefficient on the conditional v
2
,1,1
2
,1 , ext mt yt and +++
σ σ σ , the cond
respectively.
Moreover, the conditional variances
2
,2
2
,1
2
,1 H t H t o H t aeaa σ σ ++=+
2
,2
2
,1
2
,1 yt yt o yt bebb σ σ ++=+
2
,2
2
,1
2
,1 mt mt omt cecc σ σ ++=+
2
,2
2
,1
2
,1 ext ext oext bed d σ σ ++=+
mt ext yt eee ,,, ,,Denotes serially unco
respectively. During this estimation,
regressions. It is known as multivari
into account the real and the monetar
conditional variances of industrial pro
4.0 ANALYSES, INTERPRETATI
4.1 TESTING THE EXPECTATIO
OLS regression test using the equatio
11 +++= t o eYS aa H
To test for
Appendices 1 and 2, together with Ta
and the constant on excess return for
months Treasury bill
unting 847 (Online)
196
riance of the industrial production index.
ariance of the money supply
spread
ariance of exchange rate
itional variances of industrial production, money
ere modeled as described below.
rrelated innovations in industrial production, excha
the conditional variance are estimated simultaneou
te Arch in mean estimation. One merit of this mod
sides of the economy and therefore allows excess ret
duction and the money supply.
N AND DISCUSSION OF EMPIRICAL RESULT
HYPOTHESIS
n below
y expectations hypothesis
les 1 show the OLS E-VIEWS and Tabulated output
oth the 6 months and the 12 months Treasury bill eac
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upply, and exchange rate
ge rate and money supply
sly with the excess return
l estimation is that it takes
urns to be dependent on the
S.
f the effect of yield spread
h compared with the 3
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TABLE 1
TABULATED OUTPUT OF VARIA
VARIABLE C
COEFFICIENT 6.03E-05( oa )
PROBABILITIES 0.0631[P ( oa )]
TABLE 2
TABULATED OUTPUT OF VARIA
VARIABLE C
COEFFICIENT 0.000483 ( oa )
PROBABILITIES 0.0000 [P ( oa
Firstly, T-tests are conducted to eval
significance ( =0.05). Sample size
this is 432-1-1 = 430, with 5% level o
According to the expectations hypoth
My Hypotheses are: H0:01 =a
(insi
H1:01 ≠a
(signi
Note, two tail-test = /2 = 0.05/2 = 0.
0.025
REJECT Ho
-tab.025, 430
-
unting 847 (Online)
197
LES (6 MONTHS TREASURY BILL AS COMPAR
YS
1.631478( 1a )
0.0000[P ( 1a )]
LES (12 MONTHS TREASURY BILL AS COMPA
YS
0.684726 ( 1a )
] 0.0027[P ( 1a )]
ate the significance of the yield spread and this wa
n =432), number of explanatory variables (k = 1), deg
f significance and degree of freedom 430,t tab =1.9600
sis,k
oa φ =(Term premium) and
01 =a.
nificant);
ficant)
025
0.
+tab.025,430
+
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D TO 3 MONTHS)
ED TO 3 MONTHS
s conducted at 5% level of
ree of freedom d.f. = n-k-1,
025
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The t-distribution above provides u
significant in determining stock retu
explanatory variable. In general, th
accepted, this means that01 =a
a
following table and the analysis belo
A very simple way of doing this is by
spread. The principle we apply here i
denote probability.
From our eviews results
P ( 1a ) for the 6 months bill =0.0000
We therefore reject the null hypothesi
Similarly, for the 12 months bill P (a
Therefore, the null hypothesis 1a
hypothesis. . Another point of interest
also assumed that all my forecast erro
are time varying.
Although my2
R indicates that onlychanges in the excess holding return
of the expectations hypothesis obtain
(1990); Melano (1988) whose works
joint hypothesis that agents that hold
basis of either or both of these two r
because of of forecast errors, which a
2000),), Gregory and Voss (1991),
expectations hypothesis. The conditi
months Treasury bill each compared
significant predictors of excess return
the sign and the statistically significato my results, when there is an inc
increase in the yield. There is an evid
embedded in the ols results output
compared to 3 months treasury bill a
that the2 R statistics of the test incr
volatility associated with the excess r
4.2 THE MACROECONOMIC DE
unting 847 (Online)
198
s with a useful tool in making decision whether t
ns or not at the 5% level of significance and acco
e explanatory variable is said to be insignificant
d it is significant when the null hypothesis is rej
explain the decision rule for rejecting the expectatio
using the probabilities from the eviews output of bot
s that if the probability is less than .005 (5%), we rej
0.05
s that01 =a
1 ) =0.0027p 0.05
0is rejected. This in effect shows that I have
is that as we can see my 1a estimates significantly a
rs are orthogonal within the sample. This brings an ev
25.7 % and 20.6% respectively for my six monthf my data has been explained by the yield spread an
ed similar results when the research was conducted b
rejected the expectation theory of the term structure
rational expectations and term premia are time invari
easons. Either time-varying term premia caused the
ppear biased when viewed ex post. Walid Hejazi, Hu
Johnson (1993) and Kingler (1990) also had a si
nal variance of the yield spread in both the 6 mont
to the 3 months treasury bill are positive and can als
in the united state economy. I further reject the expec
ce of the yield spread. The expectations hypothesis iease in yield, investors of long-term treasury bills
ence of serial correlation in the residuals as explaine
at the appendix for my 6 months compared to 3
t the appendix. Moreover comparing the2 R of the t
eases as the term to maturity increases. The explan
turns increases variably with the term to maturity.
TERMINANTS OF THE TERM STRUCTURE.
www.iiste.org
he explanatory variable is
ding to the t-values of the
hen the null hypothesis is
ected that is01 ≠a
. The
s hypothesis.
h the constant and the yield
ct the null hypothesis. let p
rejected the expectations
e not equal to zero and it is
idence that the term premia
and my 12 months of thethe constant, my rejection
y Campbell (1995), Shiller
of interest rates which is a
ant. They rejected it on the
rejection or the rejection is
wen lai and Xian Yan (Feb
ilar results in testing the
s Treasury bill and the 12
o be viewed statistically as
tations hypothesis based on
s wrong because Accordingget a capital gain plus the
by my Durbin Watson test
onths and my 12 months
wo sets of results indicates
tion is that the risk or the
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On the assumption that the term pr
variables were factored into the exce
came about is the one described belo
2
,1
2
,11 +++++= t y yst ysO
k
t B B B H σ σ
Running the garch equation with the
results on the next page.
TABLE 3. TABULATED OUTPUT
MONTHS)
VARIABLE C YS
COEFFICIENT 8.80E-05 1.5
PROBABILITIES 0.7372 0.
SIGNIFICANT NO Y
TABLE 4. TABULATED OUTPU
MONTHS
VARIABLE C Y
COEFFICIENT -0.001834 0.93
PROBABILITIES 0.0000 0.
SIGNIFICANT YES
Theory and evidence have shown tha
which combination of the term premi
said to be a meaningful result as mo
index for the 6 months Treasury bill
variables include the yield spread, i
variables coefficients, although there
signs have implications on the term
industrial production index for the
coefficients are consistent with expec
Excess return establishes positive rel
negative significant association bet
month’s Treasury bill. However, the e
Industrial production index has a neg
bill. However, a positive relationship
This indicates that yield spread, indu
term premium in the term structure of
unting 847 (Online)
199
emium is time varying as proposed by Engle (198
ss return equation to capture their effect on the term
1
2
,1
2
,1 ++++++ t ext exmt m B B µ σ σ
elp of eview software and my data gave my results in
OF VARIABLES (6 MONTHS TREASURY BIL
Y M EX
03442 -0.000582 -7.52E-08 0.000366
000 0.0023 0.4901 0.0157
S YES NO YES
OF VARIABLES (12 MONTHS TREASURY BI
S Y M EX
1781 5.33E-06 -6.22E-07 0.002814
000 0.3495 0.0244 0.0000
ES YES YES YES
t macroeconomic variables possess some degree of e
m and forecast errors. The results are shown in table
t of the variables came out to be statistically signific
compared to 3 months, which was not statistically
dustrial production, money supply, exchange rate.
are no established theoretical foundations for it, it i
structure of interest rate in the United States econo
6 months Treasury bill as compared to the 3 mo
ations.
ationships between yield spread and the dollar-poun
een the excess return and the money supply for t
ffect of the 6 months Treasury bill on the term premiu
ative relationship with excess return for 6 months co
is identified when the maturity is increased to 6 mont
strial production, money supply, exchange rate poss
interest rates.
www.iiste.org
), certain macroeconomic
premium. The equation we
appendices 3 and 4 and the
L AS COMPARED TO 3
L AS COMPARED TO 3
planatory over excess return
3 and 4. Generally, it can be
ant except the money supply
significant... The significant
Considering the signs of the
s worth noting whether their
my. With exception of the
ths, the signs of significant
d exchange rates. There is a
e 12 months compared to3
m is statistically insignificant.
pared to 3 months Treasury
s and compared to 3 months.
ss explanatory power on the
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Let us now take a look at how these
them shows high or low correlation b
Table 5Estimated Correlation Matr
H
H 1
0.
YS
0.50701669329
68506
Y
-
0.09277133166
684791
0.
M
-
0.09101899261
083397
0.
EX
-
0.07182343179
904155
0.
Table 6 Estimated Correlation Mat
H
H 1
0.
YS
0.18470749761
65291
Y
-
0.09035221412
736021
0.
M
-
0.06392159562
479022
0.
EX
0.15772822197
00176
0.
unting 847 (Online)
200
variables are correlated in order to have an idea whe
tween excess return and the macroeconomic variable
ix of Variables by EVIEW (6 MONTHS TREASU
YS Y M
0701669329
68506
-
0.09277133166
684791
-
0.09101899261
083397
0.07
1
-
0.15851894943
10804
-
0.16941854793
6884
0.14
-
5851894943
10804 1
0.93608534948
927
0.96
-
6941854793
6884
0.93608534948
927 1
0.97
-
4849853682
4932
0.96150940959
83871
0.97224536666
17723
ix of Variables by EVIEW (12 MONTHS TREAS
YS Y M
8470749761
65291
-
0.09035221412
736021
-
0.06392159562
479022
0.15
1
-
0.14050163838
94912
-
0.07003454173
868139
0.26
-
4050163838
94912 1
0.90468117413
60365
0.30
-
7003454173
868139
0.90468117413
60365 1
0.39
6281408123
60633
0.30289762375
36155
0.39835206019
37783
www.iiste.org
ther the relationship between
.
Y BILL)
EX
-
182343179
904155
-
849853682
4932
150940959
83871
224536666
17723
1
URY BILL)
EX
772822197
00176
281408123
60633
289762375
36155
835206019
37783
1
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While yield spread is positively corr
negative association. On the contrar
months treasury bill and positively co
Generally, this result overlaps theor
research.
Walid Hejazi, Huiwen lai and Xian Y
of industrial production, the money s
returns. On the other hand, the level o
statistically significant information f
conditional variance of both industri
excess returns. The conditional vari
significant predictors of excess retur these additional conditional variances
money supply falls dramatically. Th
moments of macroeconomic variable
three months. On the other hand, the
important information for excess ret
Treasury bill term structure.
Lee Sang-Sub ( May 1995) after inv
structure of interest rates, found out t
the money supply are significant in
power for the monthly excess return
money supply remain significant whespread which contains information ab
macroeconomic factors.
5.0 SUMMARY, CONCLUSIONS
5.1 SUMMARY OF RESULTS
The main purpose of this research is
of the term structure of interest rat
macroeconomic variables on the ter
macroeconomic variables has any si
researchers rejected the expectations
the existing empirical literature on t premia and the association between
done. Similarly, 432 monthly secon
from 1964 to 1999 has been used f
money supply, the dollar-pound exch
The yield spread is selected based o
structure of interest rates. The othe
researchers such as Engle et al(1987),
mention but a few. In line with the
1995) to mention but a few, excess r
unting 847 (Online)
201
elated with excess returns, industrial production an
dollar-pound exchange rates, is negatively correlate
related with excess return for the 12 months treasury
etical explanations as well as largely consistent wit
an (Feb 2000) result s using Canadian data indicates
upply and the exchange rates are statistically insigni
f yield spread and the conditional variance of excess
or excess returns. On the contrary, for the united st
al production and the money supply are statisticall
ance of excess returns themselves as well as the l
ns. The conditional variance of industrial productioare added. In addition, the coefficient estimates on t
y therefore concluded that ,In contrast to the unite
are not significant predictors on Canadian treasury
onditional variance of excess returns and the level of
urns. Again, they found evidence of time varying
stigating the macroeconomic sources of the time-va
at the Garch conditional variance estimates of the in
ll the risk premium equations examined. They also
nder investigation. The conditional variance of indus
n yield spread is added to the risk premium equation.out the risk premium, have significant explanatory p
ND RECOMMENDATIONS
to provide empirical testing of the expectations hypo
es in the United States economy in order to exa
structure of interest rates. Specifically, it has attem
gnificant explanatory power on the term structure .
hypothesis was also investigated. To achieve these ai
he expectations hypothesis, the theoretical derivatioome macroeconomic variables and the term structur
dary financial and macroeconomic data relating to
or the analysis. Macroeconomic variables namely i
nge rates and the yield spread were selected for the st
its dominant role in the excess return equation and i
r three variables were selected in accordance wit
Dotsey et al(1995), Harris(2004), Pornpinun chanta
orks of Walid Hejazi, Huiwen lai and Xian Yan (Feb
turn is used as a proxy for the term premium. the mai
www.iiste.org
money supply establishes a
with excess return for the 6
bill.
h findings of most previous
that the conditional variances
ficant determinants of excess
eturns themselves do contain
ate data, they found that the
significant determinants of
evel of yield spread is also
disappears, however, whene conditional variance of the
states evidence, the second
ill t of maturities of two and
yield spread do contain some
risk premia in the Canadian
ying risk premia in the term
dustrial production index and
show significant explanatory
rial production index and the
. He also found out that yieldower, despite the presence of
thesis and the determinants
ine closely the impact of
pted to Investigate whether
tests as to why the earlier
ms, an extensive review of
n of the time varying risk e of interest rates has been
he United States economy
dustrial production index,
udy.
s association with the term
the findings of previous
acdepong (March 2007) to
2000, Lee Sang-Sub ( May
n assumption behind this is
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that excess return is a combination o
Fed economic research .Two broad
hypothesis and the second is thatinterest rates. These are of course e
hypotheses, two major econometric te
First, a test as to whether the term
methodology of Walid Hejazi, Hui
chantapacdepong (March 2007) ,an o
spread is performed. The study found
wrong. Thus the rejected the hypoth
whether the expectations hypothesis
(March 2007) and others.
Secondly, I investigated whether mac
the term structure of interest rate. u
GARCH estimation of 432 monthly
rate and the yield spread is run under
Sang-Sub (May 1995). excess return
spread, money supply and the dollar
United States economy. Further, pos
while negative association is found
negative relationship with the excess
reported for the longer term maturity
studies found industrial production in
maturity is, my data found industria
maturity on the United States econoXian Yan (Feb 2000, Lee Sang-Sub (
and the yield spread to be statistically
5.2 CONCLUSIONS
It has overwhelmingly been docume
(Feb 2000, Lee Sang-Sub (May1995)
variables possess explanatory power
known that the term premium is time
al used Treasury bill data and some
determinants of the excess return in
methodology, they found out that t predictors of excess return. They e
variance of industrial production and
of the maturity spectrum.
However, my results found the condi
rates to be significant predictors of t
index as a significant predictor of the
variance of industrial predicts the ter
the United States economy are foun
assumes the term premia to be a cons
2007), Walid Hejazi, Huiwen lai and
unting 847 (Online)
202
f the term premium and forecast errors. The data w
working hypotheses are set for the work. The fi
acro-economic variables have no explanatory pow pirical questions that on the face it seems to be r
sts are run.
remium is a constant or time varying using eviews
en lai and Xian Yan (Feb 2000, Lee Sang-Sub (
rdinary least square regression of 432 monthly data
data expectations hypothesis that assumes the term p
esis was rejected . this research igave me a similar
should be accepted or rejected was performed by
oeconomic variables have any significant explanator
ing eviews and in line with the work and methodol
ata of the industrial production index, money suppl
the broader framework of Walid Hejazi, Huiwen lai
sed as a proxy for the term premium. The major emp
pound exchange rate are statistically significant pre
itive association is reported for yield spread and th
for the money supply index. However, while indu
eturn for 6 months Treasury bill as compared to 3 mo
(excess return of 12 months Treasury bill as compa
dex and to be statistically significant predictors of ex
l production index to be weak a weak predictor of
y. moreover my research gave the same result asMay 1995),whose works found the money supply, th
significant predictors of excess return.
ted by previous researchers including Walid Hejazi,
, Pornpinun chantapacdepong (March 2007) that gen
on the term premia in the term structure of interest r
varying and not a constant as suggested by the expec
acroeconomic variables in testing for both the expe
two countries namely Canada and the United State
e yield spread and the conditional variance of ex phasized on the recent united state evidence that
the money supply to be significant predictors of the t
ional variance of the yield spread, money supply and
he term premia. The effect of the conditional varian
term premia at the short end of the maturity is not fel
premia for longer term to maturity treasury bills. In
to be time varying. This result came about as the e
tant was rejected by my tests. The works of Pornpinu
ian Yan (Feb 2000, Lee Sang-Sub (May 1995) confi
www.iiste.org
ere obtained from st. Louis
st one is the expectations
r on the term structure of esearchable. To test these
. in line with the works and
May 1995) and Pornpinun
of excess retun and the yield
emium to be a constant to be
esults when a research as to
Pornpinun chantapacdepong
power on the term premia in
ogy of Engle et al (1987), a
, the dollar-pound exchange
nd Xian Yan (Feb 2000, Lee
irical finding is that the yield
ictors of excess return in the
dollar pound exchange rate
trial production index has a
nths, a positive association is
ed to 3 months). While most
ess return no matter what the
excess return for short term
alid Hejazi, Huiwen lai ande dollar-pound exchange rate
Huiwen lai and Xian Yan
rally some macroeconomic
ates. moreover, it is widely
ations hypothesis. Walid et
ctations hypothesis and the
s. Using the arch in mean
cess return are significantsuggested the conditional
erm premia at the short end
the dollar-pound exchange
ce of industrial production
t. However, the conditional
ddition, the term premia in
xpectations hypothesis that
n chantapacdepong (March
rms this is true. Further, to
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a greater degree, the evidence found
these results must be explained in the
using OLS and the garch techniques. by the banking sector through whic
general perception is decades of eco
subsequent periods, then it can stron
namely industrial production index,
determinants of the term premium in t
There are some limitations in this stu
appropriate data and other related pr
only captures in addition all forecast
which covers the period 1964 to 1999
macroeconomic variable can be achie
into their influence of other macroecunder the consideration of more or ot
5.4 RECOMMENDATIONS
I recommend the following advice to
in view of my findings.
Investors
It has been found that the conditio
exchange rates and the yield spread d
determines the term premium onlyconditional variances of industrial p
spread are determinants of the term p
earning higher excess returns in an
variance of industrial production ind
making an investment in order to get
Government
Conditional variance of money sup
correlation. The economic implicatio
the other hand, industrial production
positively associated with excess ret
interest rate market. Further, money
co-integrated with stock returns. Also
these macroeconomic variables. To e
targets to limit chronic deviations.
Academics and Banks
Academia and banks should colla
macroeconomic variables in the eco
academic institutions and made availa
unting 847 (Online)
203
or the United States case is highly consistent with pr
light of the following observations. Most of the earl
he United States is operates in a system where, the fimacroeconomic changes such as money supply pri
nomic reforms are yet to be realised. Hence, if si
ly be concluded that the conditional variance of som
oney supply, the dollar-pound exchange rate and the
he term structure of interest rates.
y arising from the lack of unified theoretical literatur
blems. Using excess return to proxy the term premi
errors. Another shortcoming of the data analysis is t
. It should be noted that this was the period in which
ed on the internet. Given these limitations, there is a
nomic variables on the term premium. Thus, theseer factors than considered.
nvestors, government, exchange authorities and acad
nal variance of industrial production index, mone
etermines the term premium. With exceptions of ind
at longer term to maturity treasury bills ,correlatiroduction index, money supply, the dollar-pound e
emium. Ceteris paribus, improvement in these variab
investment. Accordingly, investors should check t
ex, money supply, the dollar-pound exchange rate a
premium.
ly has been found to be statistically predictors of
is that money supply possesses the potential of limi
index, money supply, the dollar-pound exchange ra
rn. An indication is that they contribute to increa
supply, Treasury bill rate, world crude oil and cocoa
, meaning, in the long-run, returns and growths of th
sure a guaranteed excess return, government should
borate to initiate an intensive research focusing
nomy. Moreover, outcomes of these investigations
ble to all. This will promote and encourage further re
www.iiste.org
vious evidence. However,
er studies tested the theory
nancial sector is dominatedarily operate. Indeed, the
ilar result is arrived at for
e macroeconomic variables
yield spread are significant
, difficulty in accessing the
m might not be ideal as it
e short observation period,
all the data concerning my
need for on-going research
tests might be re-examined
mia, researchers and banks
supply, the dollar-pound
strial production index that
ons also indicate that thechange rate and the yield
es signals the possibility of
e state of the conditional
nd the yield spread before
xcess return in a negative
ting the term premium. On
te and the yield spread are
es in excess returns in the
prices are also found to be
e market are determined by
et realistic macroeconomic
on different aspects of
should be published in all
earch.
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foreign exchange. Second
,term premia, and the term
0)
e term structure of interest
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erminants of three-months
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