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Asian Journal
of Research in
Banking
and
Finance Asian Journal of Research in Banking and Finance Vol. 6, No. 2, February 2016, pp. 1-16.
ISSN 2249-7323 A Journal Indexed in Indian Citation Index
1
www.aijsh.org
Asian Research Consortium
Impact of Gold and Crude Oil on Stock Market Volatility
in India
Dr. Balwinder Singh*; Ms. Kriti Chitkara**
*Professor,
Department of Commerce,
Guru Nanak Dev University,
Amritsar, India.
**Junior Research Fellow,
Department of Commerce,
Guru Nanak Dev University,
Amritsar, India.
DOI NUMBER: 10.5958/2249-7323.2016.00001.8
Abstract
India is the fourth largest importer of Crude oil and the largest importer of Gold in the world.
Trading in Crude Oil, Gold, Crude Futures and Gold Futures on Organized exchanges began in
2005 in India. Since, India is a price-taker, the escalating price of these commodities and their
Futures flares up uncertainty in the economy, as reflected in the Volatility in the Stock Market. The
purpose of the study is to highlight the effect of returns of Crude Oil, Gold, Crude Futures and Gold
Futures on the Volatility in the Indian Stock Market. The study reveals that Crude Oil, Gold and
Crude Futures have a significant impact on the stock Market Volatility in India. The study is useful
for the policy makers and the government to take measures to reduce reliance on imported goods
and harness alternative sources for sustainable economic growth.
Keywords: Crude Futures, Crude Oil, GARCH, Gold, Gold Futures, Stock Market, Volatility.
________________________________________________________________________________
1. Introduction
Stock Markets are the barometer of economic health of an economy. During the last decade, the
Stock Markets and economies have witnessed massive upheavals and tremors. The unpredictable
fluctuations or volatility in the stock market are followed by reduced growth rates in the economy,
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
2
as highlighted by Bhowmik (2013). Engle and Patton (2001) are of the view that financial asset
prices do not evolve independently of the market around them. So it is likely that other variables
may contain vital information for the Volatility of a series. Once we know which variables affect
the volatility in the Stock Market, we can formulate strategies or policies to control these variables.
Crude Oil and Gold are the commodities of strategic importance. Crude Oil constitutes above 30%
of the total value of imports in India every year. Gold too has a share of above 10% in total value of
imports in India*. The last decade has witnessed a spike in commodity prices, led by the flare up in
Crude Oil prices. Gold Prices too have shown unprecedented upward movements during the last
decade. And the demand for Crude Oil and Gold in India is rising every year, which is a matter of
concern to the policy makers. With the starting of organised trading in commodities in India, there
has been a spur in the trading of commodities and commodities futures on commodity exchanges.
Having started operations in November 2003, today, MCX holds a market share of over 80% of the
Indian commodity futures market†.
Crude Oil is an input to production and a major energy resource. India imports most of its
requirement of Crude Oil. The value of Crude Oil traded at Multi Commodity Exchange. India was
Rs 13770885.61 lakhs in 2005. The figure stood at Rs. 150743390.24 lakhs in 2010‡. The spot price
of crude oil being traded at MCX stood at Rs. 2967 on March 31, 2006 which rose to Rs. 3768 on
March 31, 2010. As on January 31, 2011, black gold, i.e. crude oil stood at Rs. 4086§. Due to its
escalating prices, Crude Oil has become popular as „Black Gold‟.
The shiny yellow precious metal `gold' has fascinated the common man, the researchers, the
investors, women and kings and so on from time immemorial. It has been described as a
`multifaceted metal' possessing characteristics similar to money, a currency without borders and an
inflation hedge (Tully and Lucey, 2005), a commodity as well as a financial asset (Callaghan, 1991)
and a global store of value (Faugere et al., 2005). It has also been addressed as a safe haven in times
of economic crisis (Baur and Lucey, 2010). India, crowned as the Golden Sparrow, is the world's
largest consumer of gold, purchasing around 700-750 tons of gold every year. Gold hoarding
tendency is well ingrained in the Indian society and unofficial stocks held by Indians is estimated to
be well above 15,000 tonnes, which is around 9% of the total global gold stocks**
. India imported
gold valuing Rs.2237.6 crores in 1994-95, when the total imports stood at Rs. 89970.7 crores. The
value of gold imports in India has risen to Rs. 95323.8 crores in 2008-09 when the total imports are
Rs 1374435.6 crores††
. Since India is a price taker when it comes to Crude Oil and Gold, the
soaring prices of these scarce resources have always been under scrutiny of the
economists.Following is an overview of the economic relationship between Crude Oil and Stock
Market.
* http://siteresources.worldbank.org/INTOGMC/Resources/10-govt_response-hyperlinked.pdf
† http://www.mcxindia.com/aboutus/aboutus.htm
‡ http://www.mcxindia.com/Sitepages/HistoricalDataForVolume.aspx
§ http://www.mcxindia.com/sitepages/SpotMarketHistory.aspx?sLinkPage=Y
** http://www.mcxindia.com/SitePages/ContractSpecification.aspx?ProductCode=GOLD
††http://www.rbi.org.in/scripts/AnnuaIPublications.aspx?head=Handbook%20of%2OStatistics
%20on%20Indian%20Economy
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
3
1.1Oil Prices and Stock Market
Oil prices play a unique and pivotal role in the economy as one of the most important input in
production. Therefore the existence of a correlation between Oil Prices and the Stock Market
cannot be ruled out (Morales and Andresso, 2014). It has been stated that Oil prices must always be
considered as one of the factors influencing the stock market returns (Chen, Roll and Ross, 1986).
This is because of the reason that Stock Markets react to oil price shocks (Nandha and Faff, 2007).
Also, the recent upsurge in prices of fossil fuels has led to a downturn in the global share markets
(Shafie and Topal, 2009). The transmission of effect of Oil price hike on Stock Market can be
studied by dividing the entire globe into:
(a) Net Oil Importing countries
(b) Net Oil Exporting countries.
The economies of Net Oil Importing countries are highly dependent upon Crude Oil since it is the
most important source of energy.
The major importers include Canada, European countries, China, Japan and India. The impact of oil
price hike can enter into the stock market through channels at macroeconomic level as well as
microeconomic level (Odusami, 2009). Pandey (2005) explains the phenomenon as follows:
1. Transmission at Macroeconomic Level
The phenomena of transmission of impact of Oil price hike on Stock Market at the macroeconomic
level can be seen in the following ways:
A rise in the Oil prices leads to a high cost of production in the Net Oil Importing
Countries which causes a decline in the real output. This results in a fall in expected
earnings, which negatively impacts the Stock Market returns.
Increase in Oil prices is followed by a transfer of wealth from Net Oil Importing
Countries to Net Oil Exporting countries, thus forcing a postponement of investment by
the industry in Net Oil Importing Countries. The process is followed by falling Stock
Market returns.
Oil price hike causes inflation and to combat it the policy makers raise the discount rate to
curb money supply. This culminates into the ebbing of Stock Market returns.
2. Transmission at Microeconomic Level
(a) Net Oil Importing Countries (NIC)
At microeconomic level, when Oil prices creep upwards, the economy of Net Oil Importing
Countries is at interface with inflation. The households postpone consumption and go for
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
4
precautionary savings followed by a low market sentiment. Hence Net Oil Importing Countries
have to face a situation of decreasing Stock Market returns.
(b) Net Oil Exporting Countries
These countries include the gulf countries, the OPEC countries and other countries such as
Malaysia which are the major exporters of Oil. These countries govern the supply and price levels
of Crude Oil. A rise in Oil prices leads to increased Stock Market returns in the Net Oil Exporting
country. At the same time it spells an inflationary pressure in Net Oil Importing Countries. This
leads to fall in money supply, low purchasing power, falling industry returns, followed by
decreasing Stock Market returns in the Net Oil Importing Countries. The phenomenon causes a fall
in demand for Crude Oil in Net Oil Importing Countries resulting in shallow exports by Net Oil
Exporting countries. Ultimately, Crude Oil led Stock Market falls in the Net Oil Exporting
countries.
Theoretical relationship between Gold and Stock Market is given below.
1.2. Gold and the Stock Market
The relationship between Gold and the Stock Markets as investment avenues has been a matter of
interest, with the coming up of organized commodity exchanges all over the world. Traditionally,
Gold has been viewed as the best hedge against inflation. It is due to the attractive correlation
properties with financial assets that Gold is said to be the best hedge and a safe haven during
economic crisis and market crashes. This was also highlighted by Baur and McDermott (2010),
Tully and Lucey (2005), Baur and Lucey (2010), Jaffe (1989), McCown and Zimmerman (2006),
Draper, Faff and Hillier (2006) in their respective studies. The Indian investor attaches utmost
importance with Gold, as it is ingrained in their psyche. Gold imports constitute above 10% of the
value of total imports in India. Gold and Stock Market compete for investors‟ funds. And therefore,
India being a price taker, the innovations in Gold Prices are likely to impact the Indian Stock
Market. Along with this, Crude Oil Futures and Gold Futures compete with the Stock Market for
investors‟ funds. The present study is an attempt to study the impact of innovations in Crude Oil,
Gold, Crude Futures and Gold Futures on the volatility in Indian Stock Market. The study will be of
benefit to the Indian policy makers in devising the policies related to Crude Oil, Gold and their
Futures so as to help reduce the uncertainty in the Indian Stock Market.
2. Review of Literature
The literature devoted to studying the impact of Crude Oil, Gold, Crude Futures and Gold Futures
is scarce. A brief review of the studies is presented here. Cochrane (1991) and Huang et al. (1996)
showed that the returns on Oil Futures and the Stock Market were connected by a common
stochastic discount factor in a way that the movements in Oil price not only affected expected cash
flow, but also the discount rate via inflation. Further, Jones and Kaul (1996) found a significant
impact of oil price shocks on the Stock Markets of US, Canada, UK and Japan. They revealed that
the Volatility was transmitted to the Stock Market either from the channel of real cash flows or the
expected returns or both. Also, Hayo and Kutan (2004) studied the influence of Oil prices on
Russian Stock Market using GARCH. They found that Crude Oil Volatility does not have a
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
5
significant impact on Russian equity index. Draper et al. (2006) also explored the investment role
of precious metals in financial markets in the USA. They showed that precious metals including
Gold showed hedging property during periods of abnormal stock market volatility. Further, Sawyer
and Nandha (2006) investigated the impact of Oil price movements on the Stock prices in Australia,
Japan and Malaysia. It was observed that the Japanese equities responded significantly to Oil
prices, since Japan was a Net Oil Importer. Odusami (2009) revealed that excess Stock Market
return is significantly affected by lagged variation in Crude Oil price. Nandha and Faff (2008) also
examined whether Oil price shocks affected the Stock Market in 35 global industry indices based
on FTSE Global Classification. They found that Oil price changes had an impact on equity returns
of all industry indices except mining, oil and gas. Similarly, Lake, et al. (2009) studied the
influence of Oil price returns and its volatility on Stock Market returns. They observed that Greek
and the US Stock Markets were sensitive to Oil price movements. Sharif, et al. (2005) also explored
the impact of Volatility in Crude Oil on Stock prices in UK. They highlighted that the Volatility in
Oil sector directly impacted the Stocks of Oil and gas sector. Further, Do et al. (2009) investigated
the impact of Gold returns on the Stock Market Volatility in ASEAN countries. The findings
revealed a significant impact of Gold returns on the Stock Market Volatility of all the countries
under study. Arouri et al. (2010) studied the impact of Oil price shocks on equity markets in GCC
countries. They found that GCC equity markets were affected significantly by Volatility in Oil
prices except Bahrain and Kuwait. Similarly, Baur and McDermott (2010) tested whether Gold was
a safe haven against stocks of 53 emerging and developing countries including India. They showed
that Gold was a hedge and a safe haven for European markets and the US but not for Australia,
Canada, Japan and BRIC countries. Further, Bhar and Nikolova (2010) explored the relationship
between world Oil prices and Russian Equity market using GARCH. They highlighted that Russian
Stock Market was affected by past innovations in WTI. Sariannidis et al. (2010) also explored the
impact of macroeconomic variables including Crude Oil on US Stock Market using GARCH. They
showed that Crude oil returns negatively affected US Stock returns. Chang (2011) investigated
volatility spillover between Crude Oil spot and Futures and Stock Market in USA. However, little
evidence of volatility spillover between Crude Oil and Stock Market could be observed. Also,
Sumner, Johnson and Soenen (2010) examined the volatility spillovers among Stocks, bonds and
Gold returns. However, no spillover was found between Gold returns and Stock returns over the
period as a whole. In addition to this, Arouri et al. (2011) discovered Volatility spillover from Oil
Futures to Stock returns in Europe. Elyasiani et al. (2011) studied the impact of movements in Oil
return and Oil return Volatility on Stock returns and Stock return Volatilities for thirteen industries
in US economy. They also found a significant impact of Oil Future returns on sector returns in nine
of the thirteen sectors. According to Basu and Gavin (2011), a huge rise in trading in commodity
derivatives over the past decade can be attributed to the need to hedge risk by commercial
producers and users of commodities. Commodities Futures offer high yields and have now become
a popular means of hedging against Stock Market risk. Narayan and Sharma (2011) have shown
that the Stock Market Volatility in the last decade was impacted by commodity price fluctuations.
Similarly, Choo, et al. (2012) examined the behaviour of Japanese Stock Market with respect to
volatility in macroeconomic variables including Crude Oil and Gold in Japan using GARCH. It was
found that Gold and Crude Oil Volatility had no impact on Japanese Stock Market. They found the
evidence of Volatility spillover from Gold Market to Stock Market and vice versa. Mensi et al.
(2013) further explored the Volatility transmission among Gold, Stocks and energy markets,
including Crude Oil. They observed that the Volatility in Stock Market affects the Gold and Crude
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
6
markets and vice versa. Hamma et al. (2014) too found the evidence of Volatility spillover from
Crude Oil market to the Tunisian Stock Market. Dhaoui and Khareif (2014) discovered a significant
effect of Oil price shocks on Stock Market returns of seven countries. This was due to the fact that
Oil constitutes a major input for many industries. Arouri et al. (2015) showed that past Gold returns
are significant in explaining the dynamics of conditional return and Volatility of Chinese Stock
Market. However, research literature that focuses on the impact of Crude Oil, Gold, Crude futures
and Gold Futures on the uncertainty in the Indian Stock Market is neglibile. It is vital to study these
variables in this perspective since India is Net Oil Importing country and Net Gold Importing
country. High values of the import of these mineral resources have implications for the economy.
Along with this, the organised trading in commodities and commodity futures in India has affected
the Indian Stock Market and economy at large. The present study attempts to fill these gaps in
existing literature. The findings shall be useful to the Indian policy makers in formulating resource
policies that would help to check Stock Market fluctuations led by Crude Oil and Gold.
3. Database and Methodology
The Stock Market is the indicator of the overall economic health of an economy. Bombay stock
exchange (BSE) is the largest Stock Exchange in India. BSE Sensex has been used as a proxy of
Indian Stock Market, being the oldest Stock Market Index. The strategic resources, namely, Gold
and Crude Oil constitute more than 40% of the value total‡‡
imports in India every year. So it will
be useful to understand their impact on the Indian Stock Market. With the beginning of organised
trading on Commodity Exchanges in India, Crude Futures and Gold Futures compete for investors‟
funds. Thus it was imperative to introduce these variables to understand the impact on Indian
Equity Market. The daily closing Sensex values have been obtained from the official website of
Bombay Stock Exchange, India§§
. The daily closing Crude Oil spot prices, Gold spot prices, 3-
months Crude Oil Futures and 3-months Gold Futures data have been taken from the official
website of Multi Commodity Exchange (MCX), India***
. The study spans from 2nd
May, 2005 to
31st March, 2011. The starting date of the period is taken as 2
nd May, 2005, as the trading in Gold,
Crude Oil, Gold Futures and Crude Oil Futures was introduced on MCX on this date. The period
covers major economic innovations like the inception of organised trading in Crude Oil, Gold,
Crude Futures and Gold Futures. The period also accounts for the global economic recession due to
US Sub-prime mortgage crisis. Along with this, it was during the chosen period that there was a
flare up in commodity prices, led by the Oil Bubble. Therefore, understanding the impact of
strategic resources like Crude Oil and Gold on the Stock Market, especially during this period,
would be of special interest to the economists and policy makers.
Engle (1982) and Bollerslev (1986) observed that there is significant non constancy in the variances
of equity returns. To capture this non constant variance they designed GARCH (1, 1) model using
stationary log of equity returns. The model considers the variance of the current error term to be a
function of previous period‟s error terms. The study utilises the log transformation of return series
of the variables. Logarithmic transformation has distinct merits. Using logarithms, one may transfer
‡‡ http://siteresources.worldbank.org/INTOGMC/Resources/10-govt_response-hyperlinked.pdf
§§ http://www.bseindia.com/indices/IndexArchiveData.aspx
*** http://www.mcxindia.com/sitepages/bhavcopy.aspx
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
7
non linear relationship into a linear one. In addition to this, when using logarithmic series, the
estimated coefficients have an immediate interpretation as elasticities. Also, when applying log
transformation to the data, the series becomes compact, often resulting in constant variance for the
transformed series (Camilleri, 2006).
Forecasting the Financial Markets is prone to errors of inconstant magnitude (Engle, 2007). This
behaviour is known as heteroskedasticity. The unpredictable market fluctuations may be large for
some periods and smaller for other periods. In econometric terms, this uncertainty or risk is
synonymous to Volatility. Stock Market is the mirror of buoyancy or dullness in the economy.
Knowing about risk or Volatility in the Stock Market is useful to make informed decisions.
According to Engle and Patton (2001), financial asset prices do not evolve independently of the
market around them. So it is likely that other variables may contain vital information for the
Volatility of a series. Bollerslev and Chou (1992) were of the view that many questions in finance
can only be meaningfully handled within a multivariate framework. He also observed that
multivariate model for estimating Volatility was superior to univariate models. In this context we
attempt to study the Volatility in returns of Sensex as affected by Crude Oil, Gold, Crude Futures
and Gold Futures. The time varying Volatility in Sensex returns shall be modelled using
Generalised Autoregressive Conditional Heteroskedasticity (GARCH) model given by Engle
(2007).
The estimation of Volatility requires the times series to be stationary. The stationarity of return
series is tested using Augmented Dickey Fuller (ADF) Test at 5% level of significance. In order to
study the transmission of shocks from these variables to the Indian Stock Market, the return series
of Crude Oil, Gold, Crude futures and Gold Futures are added to the variance equation of GARCH
model. Finally, the residual heteroskedasticity in GARCH model of Sensex Volatility is tested
using ARCH (Autoregressive Conditional Heteroskedasticity) test.
4. Analysis and Discussion
4.1. Sample Statistics of Log of Returns of Series
Log transformation of data gives the advantage of being dimensionless (Chen, 2008). Thus, the
logarithmic first differences of the price series have been used for the purpose of study. Table 4.3
shows that frequency distributions of logged returns of Sensex, Gold, Gold Futures, Crude Oil and
Crude Futures.
Table 4.1. Descriptive Statistics of Log Return Series
LCRD LCRDFUT LGLD LGOLDFUT LSNX
Mean 0.000527 0.000497 0.000811 0.000821 0.000766
Median 0.000632 0.000763 0.000861 0.000835 0.001596
Standard
Deviation
0.023898 0.017744 0.011888 0.011622 0.018233
Skewness 0.395938 -0.035224 -0.001689 -0.148785 0.055858
Kurtosis 8.710469 5.044649 9.998418 7.852598 9.681624
Jarque-Bera 2067.589 260.3763 3046.831 1470.372 2778.011
Probability 0.000000 0.000000 0.000000 0.000000 0.000000
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
8
The means of return series indicate that Gold Futures and Gold gave the highest daily mean returns
to the investors closely followed by Sensex. This was also observed in a study by Sumner et al.
(2010) and Mensi et al. (2013). Crude oil series showed mean returns much less than Gold, Gold
Futures and Sensex. Crude Futures gave the lowest mean return of all. Table 4.1 shows that highest
volatility was observed in the returns of Crude Oil, as given by standard deviation. This indicates
the riskiness of Crude Oil during 2005-2011. Sensex appeared to have a lower dispersion from
mean and thereby lower riskiness than Crude Futures, as also noted in a study by Anoruo and
Mustafa (2007). Crude Oil was also more volatile than Gold as was observed by Hammoudeh and
Yuan (2008) in his study. Gold and Gold Futures were seemingly the safest bet during the period
under study due to lower standard deviations compared to returns of other variables under
consideration. Gold exhibited the least volatility. They attributed this to the reason that a good
portion of Gold supply comes from recycling which may reduce Volatility. All of the displayed
financial variables had asymmetric frequency distributions. The distributions of mean returns of
Crude Futures, Gold and Gold Futures are negatively skewed. This means that decreases in returns
occurred more often than increases during 2005 to 2011. Morales and Andresso (2014) had also
found Gold returns to be negatively skewed in their study. A negative skewness means that the
investor could expect unpleasant surprises more than pleasant ones on a daily basis while investing
in Crude Futures, Gold and Gold Futures during 2005 to 2011.
4.2. Stationarity and Unit Root Test
Testing for a unit root or the non-stationary hypothesis is of considerable importance in empirical
finance. The reason for this is that if there is a unit root in the asset price and error term is assumed
to be an independent identical distribution (i.i.d), then it can be inferred that previous asset price
changes cannot predict asset returns. But if asset price displays a mean reversion or stationarity,
then the asset price tends to return to its trend path over time and investors may use the information
about past returns to forecast future returns (Chen and Lin, 2014).
The empirical literature on the time series properties of primary commodities most often finds that
commodity price series are non stationary. The stationarity of variables is tested because non
stationarity may cause spurious regression in time series data and thus spurious relation among
variables. A univariate analysis has been conducted to investigate the stationary properties of each
time series. Augmented Dickey Fuller (ADF) test (1981) has been used to check whether the logged
price series of Crude Oil, Gold, Crude Futures, Gold Futures and Sensex series contain unit roots.
The ADF test checks for the null of existence of unit root in the series against the alternate
hypothesis of no unit root. The result of ADF test for the stationarity of series is shown in
Table 4.2.
Table 4.2. Augmented Dickey Fuller Test Log Returns
Variable LCRD LCRDFUT LGLD LGOLDFUT LSNX
t-statistic -40.83348 -36.9752 -39.11432 -38.33004 -36.10115
Probability 0.0000 0.0000 0.0000 0.0000 0.0000
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
9
ADF test for the first difference of all logged series shows that the probability values of t-statistic is
not significant at 5%. Hence the null of unit root can be rejected for all logged variables after first
differencing at 5% level of significance. Therefore our return series are stationary. In other words,
logged price series of Crude Oil, Gold, Crude Futures, Gold Futures and Sensex are I (1).
4.3. Volatility Modelling for Sensex
AR (1) GARCH (1, 1) model of Sensex Volatility is presented in Table 4.3.1. The lagged values of
the returns of Crude Oil, Gold, Crude Futures and Gold Futures have been included in the variance
equation to test for their impact on the Sensex Volatility.
Table 4.3.1. AR (1) GARCH (1, 1) Model of Sensex Volatility
Mean Equation
Variable Coefficient p-values
C 0.001567 0.0000
AR(1) 0.071767 0.0100
Variance Equation
Variable Coefficient p-values
C 4.29E-06 0.0000
RESID(-1)^2 0.121718 0.0000
GARCH(-1) 0.867748 0.0000
DLCRD(-1) 0.000993 0.0000
DLGLD(-1) 0.001636 0.0088
DLCRDFUT(-1) -0.001260 0.0000
DLGLDFUT(-1) -0.000722 0.2568 Notes: GARCH = C(3) + C(4)*RESID(-1)^2 + C(5)*GARCH(-1) + C(6)*DLCRD(-1) + C(7)*DLGLD(-1) +
C(8)*DLCRDFUT(-1) + C(9)*DLGLDFUT(-1)
Table 4.3.1. shows a significant ARCH term given by RESID (-1). This implies that the Volatility
of Sensex returns is affected by previous day‟s squared residuals obtained from the mean equation.
The model also has a statistically significant GARCH term, given by GARCH (-1). This indicates
that Sensex Volatility is affected by previous day‟s forecast variance. In other words, the Volatility
in Sensex is affected by family shock. The coefficients of ARCH term and GARCH term at lag 1
show that Sensex Volatility is affected more by the previous day‟s variance denoted by GARCH (-
1) than by the previous day‟s squared residuals obtained from mean equation denoted by ARCH (-
1). The sum of the coefficients of ARCH term and GARCH term is 0.98. The root close to unity
implies that shocks to Volatility have a persistent effect, i.e. the shocks die out rather slowly. This
observation was also made by Bollerslev and Chou (1992) that the financial time series exhibit a
high degree of persistence in the variance.
The model also indicates that the Crude returns as well as Crude Futures returns are significant in
explaining the Volatility in Sensex returns. This observation was also made by Cochrane (1991)
and Huang et al. (1996) who showed that the returns on Oil Futures and the Stock Market are
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
10
connected by a common stochastic discount factor. Jones and Kaul (1996) had also highlighted the
impact of Oil price shocks on the Stock Markets of US, Canada, UK and Japan from the channel of
real cash flows or the expected returns or both. The result of present study is also supported by
Odusami (2009) who showed that excess Stock Market return is significantly affected by lagged
variation in Crude Oil price. Also, Arouri et al. (2011) had found the evidence of Volatility
spillover from Oil Futures to stock returns in Europe. Likewise, Narayan and Sharma (2011) had
shown that innovations in commodity markets affect equity markets and vice versa. Elyasiani et al.
(2011) had made a similar observation for thirteen industries in US economy and found a
significant impact of Oil Future returns on sector returns in nine of the thirteen sectors. The result
was supported by Chang (2011), who found the evidence of transmission of shocks from the returns
of Crude Oil Futures market to the Stock Markets in USA. Hamma et al. (2014) also showed the
evidence of Volatility spillover from Crude Oil market to the Tunisian Stock Market. Likewise,
Dhaoui and Khraief (2014) found significant effect of Oil price shocks on Stock Market returns of
seven countries. He attributed this to the fact that Oil constitutes a major input for many industries.
The model of Sensex Volatility shows that Gold price shocks are transmitted to the Stock return
Volatility. The result is supported by Basu and Gavin (2011), who stated that a huge rise in trading
in commodity derivatives over the past decade could be attributed to the need to hedge risk by
commercial producers and users of commodities. They added that Commodities Futures offer high
yields and have now become a popular means of hedging against Stock Market risk. Narayan and
Sharma (2011) too, had found that the Stock Market Volatility in the last decade was impacted by
commodity price fluctuations. Similarly, Clark (1973), Tauchen and Pitts (1983) and Ross (1989)
had highlighted that the Volatility of asset prices is can be attributed to the information flow among
the markets. Following this, it can be inferred that the prices and Volatility of the Gold, Oil and
Stocks are linked through the information flow among markets. Likewise, Do et al. (2009) had
revealed a significant impact of Gold returns on the Stock Market Volatility of ASEAN. The result
of present study is also supported by Arouri et al. (2015) who found that past Gold returns are
significant in explaining the Volatility of Chinese Stock Market.
Finally, the residual heteroskedasticity is tested in AR (1) GARCH (1, 1) model of Sensex
Volatility using ARCH test. ARCH test shall check for the null of no heteroskedasticity in the
residual series in the present model, against the alternate of presence of heteroskedasticity. The
result of ARCH test for heteroskedasticity in AR (1) GARCH (1, 1) residual of Sensex returns is
shown in Table 6.1.6.
Table 4.3.2. ARCH LM test of Residual of AR (1) GARCH (1,1) Model of
Sensex Volatility
F-statistic 0.277137 p-value 0.5987
Table 4.3.2. shows that F-statistic with value 0.277137 test has a p-value of 0.59. Thus null
hypothesis of no ARCH effect cannot be rejected. Thus the AR (1) GARCH (1, 1) model of Sensex
Volatility is free from ARCH effect.
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
11
4.4. Conclusion and Implications
Volatility in the Indian Stock Market is affected by the innovations in Gold, Crude Oil as well as
Crude Futures. This implies that the investors and the fund managers need to keep a close watch on
Gold and Crude Oil markets while investing in the Indian Stock Market. This also gives rise to the
hedging opportunities for the risk-averse investors. The returns in Crude Futures have an impact on
the Volatility in the Indian Stock Market. The onset of organized trading on Commodity bourses in
India has brought with it the travails of speculation as well. Suitable taxes need to be imposed on
the transactions in Crude Oil Futures to check speculative activity on commodity bourses in India.
According to Bhowmick (2013), high Volatility in the Stock Market indicates uncertainty and
instability in the economy. Oil is an input to production and changes in Oil price make the Indian
financial market vulnerable. Crude Oil and Gold are commodities of strategic importance
throughout the world. India is one of the largest importer of Crude Oil†††
and the largest importer of
Gold‡‡‡
. The demand for these commodities is massively growing every year. Thus, Indian
economy is substantially affected by the price fluctuations in Oil and Gold. The present study
shows that Crude Oil, Gold as well as Crude Futures are significant in explaining the Volatility in
the Indian Stock Market from 2005 to 2011. Indian economy is a price taker and has to bear the
brunt of the fluctuations in the international Crude Oil and Gold markets, as reflected in the Stock
Market.
In order to minimize the effect of Crude Oil shocks, India needs to adopt double-edged policies that
reduce the demand as well as the import of Crude Oil. On the supply side, it is imperative to
maintain strategic oil reserves to counterbalance the impact of oil led Volatility on Indian economy
and Stock Markets. There is a dire need to pump up the energy conservation practices in India, so
as to reduce dependence on Crude Oil. The government of India has been providing Oil subsidies
of about $6–$7 billion. Despite this, the losses suffered by Oil companies amounted to $22 billion
in the year ending March 2009. Such price Volatility can produce unexpected large losses from
hedging and increase the costs of price control. Major policy initiatives should also be put in place
to curb the demand for Crude Oil by deregulating the Crude Oil in India and executing stringent
energy tax reforms. The introduction of Compressed Natural Gas in Delhi and a major government
intervention in making Delhi a green and clean capital has been a successful move. It included the
compulsory use of CNG by the public transport. The same model, if replicated across India can
drastically check the demand for Oil imports and Oil-led Volatility in the Indian economy.
Indraprastha Gas Ltd. was incorporated solely for the purpose of distributing CNG in the National
Capital Territory (NCT). It distributes CNG through CNG stations for transportation and also
distributes Piped Natural Gas to domestic, commercial and industrial users. It has replaced the
demand for diesel and Liquefied Petroleum Gas (LPG) to some extent. It is also vital for the
government to work constructively to reduce the dependence on Crude Oil as a major energy
source. There is a need to focus on harnessing renewable sources of energy like geothermal energy,
solar energy and wind energy, which are abundant in India, for building a sustainable future.
††† http://www.mcxindia.com/Uploads/Products/89/Crudeoil.pdf
‡‡‡ http://www.mcxindia.com/SitePages/ContractSpecification.aspx?ProductCode=GOLD
Singh & Chitkara (2016). Asian Journal of Research in Banking and Finance,
Vol. 6, No.2, pp. 1-16.
12
The Indian government needs to develop relevant import policies and taxation policies to reduce the
demand for Gold and Crude oil. Also, the authorities need to pace up energy conservation
mechanisms as well as harnessing of alternative sources of energy in order to safeguard the Stock
Market and the economy from jolts in global Crude Oil and Gold Markets. Policies well framed and
executed in this direction would help to cushion the Indian Stock market and the economy from the
developments in Gold, Crude Oil and Crude Futures.
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Weblinks
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http://www.mcxindia.com/aboutus/aboutus.htm
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http://www.mcxindia.com/sitepages/SpotMarketHistory.aspx?sLinkPage=Y
http://www.mcxindia.com/SitePages/ContractSpecification.aspx?ProductCode=GOLD
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