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Impact of Changes in US VIX on Equity Returns of Emerging and
Frontier Markets: Global Evidence
Ghulam Sarwar* and Walayet Khan**
*Corresponding author, Department of Accounting and Finance, College of Business and Public
Administration, California State University, San Bernardino, CA, USA. Phone: 909-537-5711,
E-mail: [email protected].
**Schroeder School of Business, University of Evansville, Indiana, USA. E-mail:
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Impact of Changes in US VIX on Equity Returns of Emerging and
Frontier Markets: Global Evidence
Abstract
We investigate the effects of US stock market uncertainty (VIX) on the equity returns in
emerging markets of Latin America, Asia, Europe, Middle East and Africa, and in the composite
emerging and frontier markets before, during, and the after the 2008 global financial crisis. We
find that increases in VIX lead to significant immediate and delayed declines in emerging and
frontier markets returns in all periods. However, changes in VIX have stronger effects on returns
in Latin American and European markets than in Asian markets, and these effects were more
pronounced during the financial crisis than in other periods. Changes in VIX Granger-cause
change in returns of emerging and frontier markets during the entire 2003-2014 and post-crisis
periods. The higher US stock market uncertainty exerts a much stronger depressing effect on
emerging and frontier markets returns than their own-lagged returns. Our risk transmission
model suggests that a heightened US stock market uncertainty lowers emerging and frontier
markets returns by both reducing the mean returns and raising the variance of returns. The VIX
fears raise the return volatility of emerging and frontier markets through GARCH-type volatility
transmission processes.
Keywords: VIX, emerging market returns, predictive ability.
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Impact of Changes in US VIX on Equity Returns of Emerging and
Frontier Markets: Global Evidence
1. Introduction
The financial liberalization and capital markets development in emerging markets for
more than two decades produced substantial increase in information, labor, capital and trade
flows across countries enhancing global connectivity and market integration. The effect of this
interconnectedness is evident in capital markets as uncertainty and turmoil in one major market
immediately impacts global markets. However, the existence, magnitude, and duration of cross
border effects of heightened uncertainty in one market on other equity markets remain an
ongoing empirical question.
Despite the increase in return correlations across equity markets in recent years, emerging
markets are still not fully integrated with the developed markets and they should be treated as a
separate asset class (Bekaert, Harvey, Lunbald, and Seigel (BHLS) 2011; Phylaktis and Xia
2006; Bekart and Harvey 2014). Emerging markets continually offer attractive investment
opportunities for global investors due to their unmatched growth (including some of the fastest
growing economies in the world), high risk/return trade-off, enhanced investment opportunity
set, and a lower downside beta than the upside beta (Bekaert and Harvey 2014; BHLS 2011).
The Chicago Board Options Exchange’s Volatility Index (VIX), commonly known as the
investors’ fear index, has received greater attention after the global financial crisis as a key tool
to gauge the investors’ fears and market uncertainty. The VIX measures the market expectations
of short-run (30-day) U.S. stock market volatility implied by the S&P 500 index option prices
(CBOE 2014; Whaley 2009; Whaley 2000).
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The VIX (expected future volatility) is used as a measure to evaluate the cross country
volatility/returns relations due to its “forward looking” nature and its proven reliability of
investors’ fear gauge (Benelli and Ganguly 2007). Previous studies clearly demonstrate a
negative correlation between VIX and market turbulence since a high level of VIX is associated
with market turmoil and low level is associated with market recovery (Whaley 2009; Whaley
2000). Moreover, the IMF Global Financial Stability Report (IMF 2006) documents a significant
relation between VIX and future recessions. Also, VIX serves as an external (exogenous) shock
to emerging markets. Caballero and Panageas (2004) show that an increase in the level of VIX is
associated with significant curtailment in emerging markets capital inflows.
However, the predictive power of VIX has been mainly tested in the U.S. equity markets,
rather than in global markets particularly emerging markets (Fleming, Ostdiek,and Whaley 1995;
Copeland and Copeland 1999;Whaley 2000 &2009; Connolly, Stivers, and Licheng 2005; Giot
2005). That is, past studies have attempted to explain the emerging market returns based on
volatility of key global markets and historic returns, but very little empirical work has been
undertaken to explain these returns using forward looking volatility measures such as VIX.
If VIX has a predictive power with respect to emerging equity market returns, then investors can
potentially devise trading strategies to profit from such predictive relations. Such findings will be
in contradiction with the theory of market efficiency which dominated academic and business
scene for decades.
We study the impact of changes in US stock market uncertainty (VIX) on the equity
returns in emerging markets of Latin America (5 countries) , Asia (8 countries) , Europe (6
countries) , Middle East & Africa (6 countries) , composite emerging markets (23 countries), and
composite frontier markets (23 countries). Emerging markets offer an interesting opportunity to
5
evaluate the question of predicting their returns based on an external market fear, VIX, in an era
of cross-border openness and interconnections across global economies and markets. Such an
examination will shed light on the virtue of global diversification, flight to safety choices, and
hedging portfolio risk through VIX options and futures.
Our analysis of cross-market influences of VIX on returns and volatilities of emerging
and frontier markets focuses on two important empirical dimensions. First, we investigate
whether changes in VIX have significant contemporaneous and Granger-causal (forward
looking) relations with the emerging and frontier market returns in pre-crisis, crisis, and post-
crisis periods? An evidence supportive of contemporaneous relations will suggest that the VIX-
triggered market fears of US investors spread quickly from the US stock market to emerging and
frontier stock markets. The existence of Granger-causal relations would imply that short-run
emerging market returns are predictable from changes in VIX. These relations will also show the
strength and duration of emerging market return reactions to risk shocks emanating from VIX.
Previous studies support the existence of information frictions and gradual information
diffusion from the US stock market to other international equity markets (Rapach, Strauss, and
Zhou, 2013; Rizova, 2013; Lo and MacKinlay 1990; Cohen and Frazzini 2008; and Menzly and
Ozbas 2010). A similar leading role of VIX in predicting the emerging and frontier market
returns may have important implications for hedging the cross-market risks of global portfolios
and realizing potential profit opportunities in emerging markets resulting from the delayed
effects of VIX on returns.
Bekaert and Harvey (2014) show that emerging stock markets exhibit wide disparity in
their return volatilities. To explore the distinctive differences between the region-specific
volatilities and the composite emerging market volatility, we examine the differential influences
6
of VIX on the returns of each of the regional emerging markets indexes (5 in our case) and
compare it to the VIX’s effect on the returns of overall emerging markets (MSCI EM index).
Second, we examine the possible risk transmission channels through which VIX fears
enter the emerging and frontier markets. We propose and test a GARCH-type risk transmission
model where risk innovations in VIX transmit to the emerging and frontier markets returns
through mean return and volatility processes. Our model assumes that VIX and the volatilities of
emerging and frontier markets follow a GARCH-type process and is a variant of full-
transmission model used by Lin, Engle, Ito (1994) and Baur and Jung (2006).
The rest of the paper is organized as follows. Section 2 describes the data. The research
methods are explained in section 3. Section 4 explains the results, and the summary and
conclusions are drawn in the final section 5.
2. Data
Our study period spans from June 1, 2003 to December 31, 2014. The daily closing
values of VIX came from the CBOE web site. Our data period includes the global economic
recession period and the concomitant global stock market crisis since 2007. The daily closing
values of the overall MSCI emerging markets index (EM index) and the MSCI region-specific
indexes for the Latin American, Asian, European, Middle Eastern and African, and the
Emerging and the Frontier Markets are obtained from Morgan Stanley Capital International
(MSCI). The choice of sample period is dictated by our desire to examine the relations between
VIX and emerging market returns before, during, and after the global equity market crisis. We
follow Bekaert, Ehrmann, Fratzscher, and Mehl (2014) in specifying the time line for the global
financial crisis. They use the period from August 7, 2007 to March 15, 2009 as the global equity
market crisis period. The global equity markets initially fell on August 7, 2007 and major central
7
banks started injecting liquidity into financial markets; equity markets hit bottom on March 15,
2009 and started recovering losses since then. Thus, our global equity crisis period runs from
August 7, 2007 to March 15, 2009; the pre-crisis period from June 1, 2003 to August 6, 2007;
and the post-crisis period from March 16, 2009 to September 30, 2014.
3. Research Methods
We use the following regression to study the contemporaneous and delayed relations
between emerging market stock returns and VIX changes (Fleming, Ostdek, and Whaley 1995;
Whaley 2000; Whaley 2009):1
Rt = α + + ∑ 𝑗𝑖=−𝑗 βs,i ∆Vt+i + β|s| |∆Vt| + εt , i = -j, . . . , j (1)
where Rt is the emerging market stock return at time t, ∆Vt+i is the change in VIX at time t+i,
|∆Vt| is the absolute change in VIX at time t, βs,i is the regression coefficient of the relation
between Rt and ∆Vt+i , β|s| is the regression coefficient for |∆Vt|, α is the regression intercept,
and εt is the error term. The coefficients βs,i and β|s| jointly measure the asymmetric relation
between Rt and ∆Vt given the existence of asymmetric relations between returns and stock
market volatility in previous studies (Schwert 1990). We use the Schwartz and Akaike
information criteria in selecting the number of lagged and lead terms to include in Equation (1).
A negative contemporaneous coefficient βs,0 would seem plausible on the basis of an
inverse relation between investors’ fears and returns and would be consistent with the return
predictions of the CAPM models of Merton (1973a) and Sharpe (1964). Indeed, a strong
negative association between US stock market returns and changes in VIX is reported by
Banerjee, Doran, and Peterson (2007), and Fleming, Ostdek, and Whaley (1995).
8
A persistence in the market volatility as shown in previous studies (Wu, 2001; Bekaert
and Wu, 2000) would predict the regression coefficients βs,i (i<0) to have a negative sign.
Similarly, the presence of a mean-reversion in VIX (Giot 2005; Guo and Whitelaw 2006; Guo
and Wohar 2006) would suggest a positive sign for the regression coefficients βs,i (i>0). The joint
coefficients (βs,0 + β|s|) and (βs,0 - β|s|) represent the asymmetric effects of positive and negative
changes in VIX on emerging market stock returns, respectively. The asymmetric effects imply
that a decrease in emerging stock returns from an increase in VIX is expected to be larger than an
increase in stock returns from a similar drop in VIX.
Guo and Wohar (2006) document that the mean levels of VIX shift over time. Also, stock
market returns and VIX changes have shown significant autocorrelations as reported later in
Table 1. Hence, we estimate equation (1) using Hansen’s (1982) method of moments estimator to
obtain consistent regression coefficients and standard errors in the presence of possible
heteroscedasticity and autocorrelation problems.
While equation (1) captures the VIX-returns relations and the possible mean reversion
effects of VIX on these relations, it cannot examine the predictive power of VIX changes for the
emerging stock market returns. We analyze this predictive ability of VIX by examining the lead-
lag relationships between VIX changes and stock market returns using the Granger (1969)
causality tests. We follow Rapach, Strauss, and Zhou (2013) in estimating the following
augmented predictive regressions:2
Rt = β0 + ∑ 𝑛𝑖=1 βi ∆Vt-i +∑ 𝑛
𝑖=1 βri Rt-i + et , i = 1, . . . , n (2)
and
∆Vt = α0 + ∑ 𝑛𝑖=1 αi Rt-i + ∑ 𝑛
𝑖=1 αvi ∆Vt-i + εt , i = 1, . . . , n (3)
9
where Rt and ∆Vt are the emerging stock market returns and changes in US stock market
volatility (VIX), respectively. The regression coefficients βi and αi capture the effects of lagged
VIX and lagged stock returns, respectively, βri and αvi reflect the respective effects of own-
lagged value of dependent variables, β0 and α0 are intercepts, and et and εt are error terms. The
Granger causality tests of equation (2) will allow us to examine if lagged changes in VIX have
predictive ability for the direction of emerging market returns. We use the Schwartz and Akaike
information criteria to specify the number of lagged terms in equations (2) and (3), and the
Phillips-Perrin unit root Z-test to check the stationarity of returns and changes in VIX to
circumvent the problem of spurious regressions.
To examine the transmission channels of VIX fears to emerging market returns, we
notice from previous spillover studies that changes in U.S. equity returns affect returns in other
markets both through a mean return equation and a volatility of return equation (Baur and Jung,
2006; King and Wadhwani, 1990; Lin, et a., 1994). Thus, the VIX fears may not only lower
emerging market returns but may also lead to higher return volatility (uncertainty) which in turn
will negatively affect the returns. Our dual-channel transmission model for the emerging market
returns is a variant of the aggregate-shock model of Lin, et al. (1994) and Baur and Jung (2006)
and can be written as follows:
Rt = µ1 + β1 Rt-1 + β2 ∆Vt + β3 Xt-1 + εt, with εt| ψt-1 ~N(0, ht) (4)
and ht = α1 + γ1 ε2
t-1 + γ2 ht-1 + γ3 ∆Vt (5)
∆Vt = ν1 + ξt, with ξt| ψt-1~N(0, gt) and gt = а1 + λ1 ξ2
t-1 + λ1 gt-1 (6)
In equations (4)-(6), µ1 and α1 are the constants of the mean return and variance,
10
respectively, Rt is the emerging market return at time t, ∆Vt is the change in VIX at time t, the
regressor Xt-1 captures possible effects of regional market returns, N(, . ,) denotes a normal
distribution, and ht is the conditional variance of returns. The volatility (ht) of emerging
market returns and ∆Vt are assumed to follow GARCH processes. In equation (4), the
emerging market returns are influenced by the market’s own-lagged return, regional returns,
and US market risks. The US stock market uncertainty (∆Vt) enters the emerging stock
markets through the mean return equation (4) as well as through the volatility equation (5).
The full transmission model in equations (4) to (6) can be estimated using the quasi-maximum
likelihood procedures under the GARCH framework, as pointed out by Baur and Jung (2006).
4. Results
4.1. Returns-VIX Statistics and Regression Analysis
Table 1 presents the summary statistics of U.S. stock market uncertainty (VIX) and
equity returns of six regional emerging and frontier markets for the entire sample period 2003:6:-
2014:12, and for pre-crisis, crisis, and post-crisis sub periods. The daily VIX ranges from a
minimum of 9.89% to a maximum of 80.86%, its highest value on November 2, 2008. All the
emerging and frontier markets have positive mean daily returns for the entire period. The highest
mean returns are for the Latin American and Asian markets, while the lowest mean returns and
the highest volatility occur in European emerging markets. All emerging and frontier market
returns and VIX exhibit significant first-order autocorrelation.
The results of Table 1 are more revealing when separated by the three sub periods. All
the emerging and frontier markets have positive mean returns during both the pre- and post-crisis
periods. But all the emerging markets have negative mean returns in the crisis period. The
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volatility of daily returns was nearly twice as much during the crisis period (average 2.7%) than
in either the pre-crisis period (1.16%) or the post-crisis period (1.33%). The mean VIX value
rose 115% in the crisis period than in the pre-crisis period, and volatility of VIX (volatility of
volatility) jumped from 3.38% to 14.73%, a three-fold rise, from the pre-crisis period to the crisis
period. The mean and volatility of VIX dropped 33% and 50%, respectively, from the crisis
period to the post-crisis period. Table 1 shows that VIX and changes in VIX have significant
first-order autocorrelation in all three sub periods. Similarly, all returns show significant first-
order autocorrelation in the pre-crisis period and crisis period (except Latin America). Four of
the six emerging market returns also exhibit significant autocorrelation in the post-crisis period.
The significant change in the volatility of VIX and returns between sub periods and the
autocorrelations in returns and VIX, respectively, are accounted for later in our use of Hansen’s
method of moments procedure for estimating the VIX-returns relations.
Table 2 shows the contemporaneous correlations between the returns and changes in
VIX, and between the changes in VIX and returns. All the VIX-returns correlations are negative
and statistically significant at the 1% level, indicating that negative changes in returns occur
when VIX experiences positive changes (no causation implied).The highest VIX-returns
negative correlations exist for the Latin American and European emerging markets, the lowest
for Asian emerging markets. Thus, the coincidence of falling returns at times of rising VIX is
more pronounced in the Latin American and European emerging markets than in the Asian
markets.
Table 3 presents the regression results that examine the relations between US stock
market volatility (VIX) and emerging and frontier stock market returns. The Schwartz and
Akaike information criteria suggested the use of two lagged and lead terms in regression
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equation (1). The results show a strong negative contemporaneous relation (βs,0) between the
changes in VIX and returns in all emerging and frontier markets in all periods. The size of
contemporaneous coefficient ranges from a low of -0.24 for Asian markets to a high of -0.67 for
Latin American markets during the entire period 2003-2014. One percent rise in VIX is
accompanied by 0.37 and 0.27 percent drop in the broader emerging market and frontier market
returns, respectively. On average, the largest negative effects of changes in VIX are felt on the
same-day stock returns of Latin American and European markets during the entire period and in
all sub periods. Among the sub periods, the largest immediate negative effect of changes in VIX
on returns occurs in the crisis period than in pre- and post-crisis periods. The only exception is
the Latin American markets where the immediate negative effect of VIX on returns is strongest
in the pre-crisis period (-0.87) than in crisis period (-0.76). Further, the immediate negative effect
of changes in VIX on returns is larger in the broader emerging markets (23 countries) than in the
composite frontier markets (23 countries) in all sub periods. These results are consistent with
those of Fleming, Ostdiek, and Whaley (1995) and Whaley (2000) for the US stock market, and
suggest that VIX also serves as an investor fear gauge in all the regional emerging equity
markets and in the broader emerging and frontier markets.
Interestingly, the lag-one coefficient of changes in VIX was significant and negative for
all the emerging and frontier market returns during the entire period and three sub periods,
implying that the negative effects of changes in VIX on stock returns continue for an additional
day in the these markets. The lag-two coefficient of changes in VIX was statistically significant
for the European, Asian, and broader emerging markets during the crisis period, suggesting a
persistence in the negative effects of heightened U.S.-market risk fears on these three markets for
up to two days. In general, the regional emerging markets and the overall emerging and frontier
13
markets show no relation to lead-one and lead-two changes in VIX, which fail to support the
mean reversion effects of VIX on returns. Further, the coefficient of the contemporaneous
absolute changes in VIX (β|s|) is generally not significant for the emerging and frontier markets in
any sub period, indicating that the mere size of changes in VIX, regardless of its direction, is not
a significant factor influencing the market returns. The non-significant value of β|s| does not
support the existence of asymmetric effects of changes in VIX on the emerging and frontier
market returns.
The results of Table 3 show that changes in VIX collectively explain a much bigger
percentage of daily returns during the crisis period than in pre- and post-crisis periods. The
adjusted coefficient of determination (R2) reveals that the VIX changes jointly explain nearly
twice as much of daily emerging and frontier market returns during the crisis period (average R2
0.43) than in the pre-crisis period (0.20) or post-crisis period (0.26). Thus, the daily emerging
and frontier market returns reacted more aggressively to the VIX fears of U.S. markets during
the financial crisis. Our results are consistent with those of Rapach, Strauss, and Zhou (2013)
who report that the explanatory power of US returns for returns of non-US industrialized
countries rises during business cycle recessions and also with that of Yunus (2013) who indicates
that integration among major world equity markets rises during a major financial crisis.
Overall, the contemporaneous and lag-one changes in VIX jointly capture the most
significant negative effects of VIX fears on the emerging and frontier stock market returns. The
immediate negative effects of VIX changes on returns are the strongest during the crisis period
with an average value of -0.49 for all markets (-0.38, pre-crisis period; -0.36, post-crisis period).
Hence, the depressing effects of daily changes in U.S. stock market uncertainty on the emerging
and frontier market returns are contained primarily to the same day and next trading day.
14
The strong contemporaneous negative relations between VIX changes and emerging and
frontier market returns suggest that any global portfolio diversification efforts involving asset
allocations among U.S., emerging, and frontier equity markets may not achieve its risk
diversification objectives. Also, the spread of VIX fears to U.S., emerging, and frontier equity
markets simultaneously may not afford investors many flight-to-safety choices by shifting funds
between US and emerging and frontier equity markets. Furthermore, any promising strategies to
hedge the risks of equity portfolios invested in both US and emerging markets may involve
taking long positions in VIX and VXEEM (EM VIX) options or futures in order to offset the
losses on equity portfolios with the gains on volatility options and futures and vice versa.3
The transmission of VIX fears to emerging and frontier markets may be related to the
large US trading relations with Latin American countries (e.g., Mexico and Brazil), Asian
countries (e.g., China), and developed Euro-zone countries, and the resulting depressing effects
of these countries’ markets on other emerging and frontier markets through trading relations.
Hence, the VIX fears of US investors about US economy and businesses may signal instability
and weakness in such trading relations directly with US or indirectly through its major trading
partners. The persistence in the effect of current changes in VIX on emerging and frontier market
returns suggests that investors’ fears about the US market diffuse a bit slowly as investors
gradually analyze the effect of US macroeconomic and stock market information relevant to the
emerging and frontier markets. Our results are consistent with those of Rizova (2013) who
reports that a country’s stock market does not react immediately and fully to the stock market
movements of the country’s trading partners, and with the gradual information diffusion process
documented in other studies (Lo and MacKinlay 1990; Cohen and Frazzini 2008; Menzly and
Ozbas 2010; Hou 2007).
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4.2 Pairwise Granger Causality Tests
The results of Granger causality tests for equations (2) and (3) are presented in Table 4.
The Akaike and Schwartz information criteria suggest the use of three lagged terms for the
independent variables. The results of Phillips-Perrin unit root Z-tests, with values ranging from -
2013 to -2935, indicate that the null hypothesis of non-stationarity of return and change in VIX
(VIXC) series is rejected at the 1% level. Hence, the differencing of returns and VIXC is not
needed to attain stationarity for conducting Granger causality tests.
The Granger causality results in Table 4 show that none of the emerging and frontier
market returns have predictive power for the US stock market volatility (VIX) in any sub period.
This finding is consistent with the previous non-significant returns-VIX coefficients at leads 1
and 2 (βs,+1 and βs,+2) in Table 3.
The results of Table 4 for the three sub periods indicate that the US stock market
volatility does not Granger-cause the regional emerging market returns and the overall emerging
and frontier market returns during the pre-crisis and crisis periods. But changes in VIX have
significant predictive power for the daily stock market returns of all the regional emerging
markets and the broader emerging and frontier markets in the post-crisis period. This post-crisis
predictive ability of VIX seems to also produce a significant prediction power of VIX for returns
during the entire sample period. These results suggest that, after seeing the spread of 2008 U.S.
financial crisis to nearly all world equity markets, emerging and frontier market investors
became more responsive to changes in US stock market uncertainty in the post-crisis period. The
predictive ability of VIX for the emerging and frontier market returns in the post-crisis period
may be related to the evidence of information frictions and limited information-processing
16
capabilities of investors in previous studies (Hong and Stein, 1999; Hong, Torous, and Valkonov
2007; Lo and MacKinlay 1990). Furthermore, since the US equity market is the world’s largest
and US is a major trading partner of larger emerging economies (e.g., China, Mexico, and
Brazil), any VIX fears of US markets will likely have significant implications for the equity
markets and trading patterns of U.S. trading partners, and in turn on their trading partners in
other emerging and frontier markets. The gradual transmission of US market risks to the
emerging and frontier markets due to the information-processing limitations of investors can
occur even when traders are aware of the information frictions and try to profit from them, as
demonstrated by Shleifer and Vishnay (1997) and Rizova (2010) in other market situations.
4.3. Returns-VIX Relations under the Full Transmission Model
Table 5 presents the results of the relations between the emerging and frontier market
returns and VIX changes under the full transmission model in which VIX innovations affect the
stock returns directly through the mean return process as well as indirectly via a GARCH-based
process of the volatility of return. The use of current changes in VIX (VIXCt) variable in both
the return and volatility processes of emerging market returns is consistent with, and supported
by, the significant contemporaneous VIX-returns coefficients in Table 3. The response of current
returns to lagged VIX changes is expected to be captured by the own-lagged return variable
included in the return equation.
The results of Table 5 indicate that, after controlling for the effects of a
country’s own-lagged returns, the latest changes in VIX exert a strong negative effect on the
stock returns of emerging and frontier markets. This result holds for the pre-crisis, crisis, and
post-crisis periods. The negative effect of current changes in VIX (VIXC) on the returns of
17
regional and composite emerging market returns is much stronger (average value -0.34) than
the effect of the market’s own-lagged return (average effect 0.11) during the entire period and
all sub periods. The negative effect of VIX on returns was largest for the Latin American
markets with a -0.60 value, compared to a value of 0.13 for the market’s own-lagged return
effect. These results for the relation between emerging and frontier market returns and VIX
are consistent with those between foreign returns and US returns in Rapach, Strauss, and
Zhou (2013) who show that US stock returns are a more powerful force than even the
countries’ own economic variables in predicting the monthly stock returns of numerous non-
U.S. industrialized countries.
The Table 5 results also show that the latest changes in VIX raise the volatility of
emerging and frontier market returns as shown by the positive and significant coefficient of
VIXCt in the volatility equation. As expected, the positive effect of VIX on the volatility of
returns was larger in the crisis period than in the pre- and post-crisis periods. Hence, increases
in VIX (a fear gauge) lead to higher uncertainty of stock returns in all the regional emerging
markets and in the broader emerging and frontier markets. The positive coefficient of VIXC in
the volatility of return equation and its negative coefficient in the mean return equation jointly
suggest that higher US stock market uncertainty lowers emerging market returns by directly
lowering their mean returns and indirectly raising their volatility of returns which in turn
depresses returns further.
The GARCH coefficients in the volatility equations of the emerging and frontier
market returns are all positive and large (average value 0.93) and significant in all sub periods.
The large positive GARCH effects indicate persistence in the expected volatilities of
emerging and frontier market returns, which imply that higher current volatilities do not taper
18
off quickly but linger on as higher future expected volatilities. These results are consistent
with the persistence in volatility of U.S. markets reported by Wu (2001) and Bekaert and Wu
(2000). The ARCH coefficients in the volatility equation are significant for all markets in all
sub periods, except for one case in the crisis period. Our results suggest that GARCH
framework may adequately capture the properties of volatilities of the emerging and frontier
market returns. The Chi-Square normality test for the residuals indicates that the null
hypothesis of normally distributed residuals under the GARCH framework for the emerging
and frontier market stock returns cannot be rejected. Overall, the results of our transmission
model underscore the importance of allowing VIX changes to influence emerging and frontier
market returns through both the mean and volatility equations of returns. Admittedly, there
may be other channels through which VIX can influence volatilities of the emerging and
frontier market returns.
5. Summary and Conclusions
We investigate the effects of US stock market uncertainty (VIX) on the equity returns in
emerging markets of Latin America, Asia, Europe, Middle East and Africa, and in the composite
emerging and frontier markets before, during, and the after the 2008 global financial crisis. Our
analyses focus on the immediate effects of VIX on returns, the Granger-cause effects of VIX on
returns, and the transmission mechanism of VIX fears onto returns via mean return and GARCH-
type volatility processes.
We find that increases in VIX lead to significant immediate and delayed declines in
emerging and frontier market returns in all periods. However, changes in VIX have stronger
effects on returns in Latin American and European markets than in Asian markets, and these
effects were more pronounced during the financial crisis than in other periods. Changes in VIX
19
Granger-cause change in returns of emerging and frontier markets during the entire 2003-2014
and post-crisis periods. The higher US stock market uncertainty exerts a much stronger
depressing effect on emerging and frontier markets returns than their own-lagged returns. Our
risk transmission model suggests that a heightened US stock market uncertainty lowers emerging
and frontier markets returns by both reducing the mean returns and raising the variance of
returns. The VIX fears raise the return volatility of emerging and frontier markets through
GARCH-type volatility transmission processes.
20
END NOTES
1. Whaley (2000, 2009) provides the rationale why US stock returns, rather than VIX, can
be treated as explanatory variables in this regression for examining the relations between
US returns and VIX.
2. Unlike these six studies, Koch (1993) and Easley, O’Hara and Srinivas (1998) argues for
the inclusion of a contemporaneous interaction term in the augmented predictive
regressions as the variables in question may be simultaneously determined. We will also
estimate equations (2) and (3) as a VAR model with contemporaneous terms in a
simultaneous-equation system.
3. These hedging strategies using volatility options and futures became possible since
March 2011 when CBOE started trading options and futures on the volatility indexes of
iShares MSCI emerging market ETF and iShares MSCI Brazil index fund ETF. Hence,
similar to VIX, the volatilities of the Brazilian and overall emerging markets are now
being traded.
21
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24
Table 1. Summary Statistics of Daily Volatility and Emerging Market Stock Returns
Variable Mean (%) SD (%) Min (%) Max (%) ρ1
2003:6-2014:12 (Entire Sample Period)
VIX 19.65 9.45 9.89 80.86 0.98*
VIX Change -0.001 1.76 -17.36 16.54 -0.15*
LA Return 0.042 1.82 -15.06 15.36 0.09*
EUR Return 0.02 2.04 -19.92 18.60 0.08*
EMEA Return 0.03 1.64 -15.54 12.82 0.08*
ASIA Return 0.04 1.39 -11.99 12.65 0.08*
FM Return 0.04 1.09 -9.80 8.02 0.19*
EM Return 0.04 1.32 -9.99 10.07 0.20*
2003:6-2007:7 (Pre-Crisis Period)
VIX 14.79 3.38 9.89 25.16 0.95*
VIX Change -0.002 0.94 -5.56 7.16 -0.12*
LA Return 0.145 1.37 -6.92 5.04 0.12*
EUR Return 0.124 1.51 -8.89 6.64 0.07*
EMEA Return 0.111 1.20 -6.82 4.82 0.09*
ASIA Return 0.104 1.06 -5.71 5.39 0.12*
FM Return 0.113 0.86 -4.05 3.94 0.22*
EM Return 0.115 0.95 -4.85 4.05 0.22*
Note: The daily data cover the period from June 1, 2003 to December 30, 2014 (i.e., 2003:6-
2014:12). ρ1 is the first-order autocorrelation coefficient and an asterisk ‘*’ on ρ1 indicates its
significance at the 5% level. The variables are defined as follows: LA, Latin America EM returns;
EUR, European EM returns; EMEA, European, Middle East, and Africa EM returns; ASIA, Asian
EM returns; FM, Frontier Market (23 countries) returns; EM, all emerging markets (23 countries)
index; and VIXCt, changes in VIX.
25
Table 1 (cont.). Summary Statistics of Daily Volatility and Stock Index Returns
Variable Mean (%) SD (%) Min (%) Max (%) ρ1
2007:8-2009:3 (Crisis Period)
VIX 31.78 14.73 16.129 80.86 0.97*
VIX Change 0.055 3.23 -17.36 16.54 -0.16*
LA Return -0.14 3.32 -15.06 15.36 0.05
EUR Return -0.27 3.47 -19.92 18.60 0.11*
EMEA Return -0.19 2.69 -15.54 12.82 0.11*
ASIA Return -0.17 2.46 -11.99 12.65 0.07*
FM Return -0.17 2.02 -9.80 8.02 0.18*
EM Return -0.17 2.35 -9.99 10.07 0.19*
2009:4-2014:12 (Post-Crisis Period)
VIX 20.05 7.10 10.32 48.06 0.97*
VIX Change -0.02 1.65 -12.94 16.04 -0.15*
LA Return 0.017 1.49 -8.65 7.73 0.10*
EUR Return 0.02 1.83 -9.43 7.95 0.04
EMEA Return 0.03 1.54 -8.24 6.05 0.05
ASIA Return 0.05 1.18 -5.87 5.32 0.06*
FM Return 0.05 0.82 -4.77 4.97 0.18*
EM Returns 0.043 1.13 -6.52 5.59 0.19*
Note: The subperiod 2007:8-2009:3 runs from August 7, 2007 to March 15, 2009, while
subperiod 2009:4-2014:9 covers the period from March 16, 2009 to September 30, 2014. ρ1 is
the first-order autocorrelation coefficient and an asterisk ‘*’ on ρ1 indicates its significance at the
5% level. The variables are defined as follows: LA, Latin America EM returns; EUR, European
EM returns; EMEA, European, Middle East, and Africa EM returns; ASIA, Asian EM returns; FM,
Frontier Market (23 countries) returns; EM, all emerging market (23 countries) index; and VIXCt,
changes in VIX.
26
Table 2. Correlation between VIX and Emerging Market Stock Returns, Full Sample Period
Return Variable VIX Change
Latin American EM Return (LA) -0.62*
Europe EM Return (EUR) -0.41*
Europe, Middle East, Africa (EMEA) EM Return -0.41*
Asian EM Return (ASIA) -0.22*
Frontier Markets Return (FM) -0.37*
All Emerging Markets Return (EM) -0.43*
LA Change -0.52*
EUR Change -0.34*
EMEA Change -0.35*
ASIA Change -0.20*
FM Change -0.37*
All EM Change -0.40*
Notes: An asterisk ‘*’ on the correlation value indicates its significance at the 5% level.
27
Table 3. Relations between VIX Changes and Emerging Market Stock Returns
Period Intercept βs,-2 βs,-1 βs,0 βs,+1 βs,+2 β|s| Adj. R2
__________________________________________________________________________________________________________________
__ Panel A. Latin American EM Returns
2003:6-2014:12 0.097* 0.01 -0.21* -0.67* -0.03 -0.03 -0.05 0.43
2003:6-2007:7 0.18* -0.09* -0.35* -0.87* -0.01 -0.01 -0.05 0.33
2007:8-2009:3 0.04 0.03 -0.25* -0.76* -0.03 -0.06 -0.07 0.55
2009:4-2014:12 0.01 -0.02 -0.16* -0.55* -0.05 -0.02 -0.01 0.36
Panel B. Europe EM Returns
2003:6-2014:12 0.124* -0.08* -0.33* -0.53* -0.05 -0.05 -0.11* 0.25
2003:6-2007:7 0.13* -0.14* -0.52* -0.36* 0.01 -0.03 -0.01 0.12
2007:8-2009:3 0.01 -0.09 -0.41* -0.59* -0.07 -0.10 -0.01 0.36
2009:4-2014:12 0.08 -0.08 -0.22* -0.52* -0.06* -0.01 -0.07 0.25
Panel C. EMEA EM Returns
2003:6-2014:12 0.117 -0.04 -0.31* -0.43* -0.05* -0.04 -0.09* 0.28
2003:6-2007:7 0.14* -0.14* -0.49* -0.33* 0.03 -0.02 -0.04 0.17
2007:8-2009:3 0.03 -0.03 -0.35* -0.45* -0.06 -0.05 -0.09 0.39
2009:4-2014:12 0.07 -0.05 -0.21* -0.45* -0.06* -0.01 -0.05 0.26
Note: The subperiods 2003:6-2007:7, 2007:8-2009:3, and 2009:4-2014:9 are the pre-crisis, crisis,
and post-crisis periods, respectively. Parameters βs,i indicate the effect of contemporaneous
(i=0) and non-contemporaneous (i≠0) daily changes in VIX on stock index returns. The
parameter β|s| captures the contemporaneous effect of absolute VIX changes on stock returns. An
asterisk ‘*’ on the coefficient indicates its significance at the 5% level. Adj R2 is the adjusted
coefficient of determination.
28
Table 3 (cont.): Relations between VIX Changes and Emerging Market Stock Returns
Period Intercept βs,-2 βs,-1 βs,0 βs,+1 βs,+2 β|s| Adj. R2
__________________________________________________________________________________________________________________
_ Panel D. Asian EM Returns
2003:6-2014:12 0.045 -0.09* -0.36* -0.24* -0.02 -0.01 -0.01 0.24
2003:6-2007:7 0.16* -0.17* -0.47* -0.15* 0.02 -0.02 -0.08 0.17
2007:8-2009:3 -0.21 -0.12 -0.38* -0.33* -0.03 -0.04 0.03 0.32
2009:4-2014:12 0.05 -0.07* -0.31* -0.17* -0.02 0.01 -0.01 0.22
Panel E. Frontier Markets Returns
2003:6-2014:12 0.09* -0.04 -0.24* -0.27* -0.01 -0.02 -0.04 0.29
2003:6-2007:7 0.13* -0.14* -0.38* -0.28* 0.01 -0.01 -0.04 0.21
2007:8-2009:3 -0.09* -0.06 -0.30* -0.37* -0.01 -0.05 -0.02 0.46
2009:4-2014:12 0.09* -0.03 -0.15* -0.18* -0.01 -0.01 0.04 0.20
Panel F. All Emerging Markets Returns
2003:6-2014:12 0.076 -0.065* -0.32* -0.37* -0.03 -0.028 -0.037 0.36
2003:6-2007:7 0.15 -0.15* -0.46* -0.34* 0.021 -0.001 -0.06 0.26
2007:8-2009:3 -0.09 -0.06* -0.34* -0.45* -0.04 -0.04 -0.02 0.48
2009:4-2014:12 0.05 -0.05* -0.26* -0.31* -0.04 -0.01 -0.024 0.31
Note: The subperiods 2003:6-2007:7, 2007:8-2009:3, and 2009:4-2014:9 are the pre-crisis, crisis,
and post-crisis periods, respectively. Parameters βs,i indicate the effect of contemporaneous
(i=0) and non-contemporaneous (i≠0) daily changes in VIX on stock index returns. The
parameter β|s| captures the contemporaneous effect of absolute VIX changes on stock returns. An
asterisk ‘*’ on the coefficient indicates its significance at the 5% level. Adj R2 is the adjusted
coefficient of determination.
29
Table 4. Granger Causality Tests
Period Ho: VIXC does not Ho: Returns do not
lead returns lead VIXC
___________________________________________________________________________________________________________________
Panel A. Latin American EM Returns
2003:6-2014:12 16.54* -12.87
2003:6-2007:7 0.33 0.04
2007:8-2009:3 3.39 0.70
2009:4-2014:12 18.08* 1.38
Panel B. Europe EM Returns
2003:6-2014:12 16.23* 6.79
2003:6-2007:7 2.21 0.60
2007:8-2009:3 1.43 3.65
2009:4-2014:12 16.17* -41.5
Panel C. EMEA EM Returns
2003:6-2014:12 18.89* 2.56
2003:6-2007:7 3.17 0.03
2007:8-2009:3 0.97 1.63
2009:4-2014:12 20.99* 0.21
Note: The subperiods 2003:6-2007:7, 2007:8-2009:3, and 2009:4-2014:9 are the pre-crisis, crisis,
and post-crisis periods, respectively. The VIXC is the change in VIX. An asterisk ‘*” on the Chi-
square test value indicates the rejection of the null hypothesis that VIX changes (returns) do not
Granger-cause stock returns (VIXC). The EMEA is the return for Europe, Middle East, and
Africa emerging markets (10 markets).
30
Table 4 (cont.). Granger Causality Tests
Period Ho: VIXC does not Ho: Returns do not
lead returns lead VIXC
___________________________________________________________________________________________________________________
Panel D. Asian EM Returns
2003:6-2014:12 12.95* 1.14
2003:6-2007:7 4.29 1.06
2007:8-2009:3 1.87 0.69
2009:4-2014:12 10.27* 0.07
Panel E. Frontier Markets Returns
2003:6-2014:12 10.60* 1.71
2003:6-2007:7 4.23 0.05
2007:8-2009:3 0.64 1.01
2009:4-2014:12 16.89* 0.05
Panel F. All Emerging Market Returns
2003:6-2014:12 11.01* -597
2003:6-2007:7 4.04 0.16
2007:8-2009:3 -304 0.329
2009:4-2014:12 9.15* 0.37
Note: The subperiods 2003:6-2007:7, 2007:8-2009:3, and 2009:4-2014:9 are the pre-crisis, crisis,
and post-crisis periods, respectively. The VIXC is the change in VIX. An asterisk ‘*” on the Chi-
square test value indicates the rejection of the null hypothesis that VIX changes (returns) do not
Granger-cause stock returns (VIXC).
31
Table 5. Linkages between VIX and Emerging Market Stock Returns under the Full
Transmission Model, 2003:6-2014:12
Regressor LA EUR EMEA ASIA FM EM
Mean Const. 0.072* 0.084* 0.08* 0.09* 0.043* 0.074*
LAt-1 0.13* ------ ------- ------ ------ ------
EURt-1 ------ 0.076* ------ ------ ------ ------
EMEAt-1 ------ ------ 0.08* ------ ----- ------
ASIAt-1 ------ ------ ------ 0.087* ----- ------
FMt-1 ------ ------ ------ ------ 0.065* ------
EMt-1 ------ ------ ------ ------ ----- 0.22*
VIXCt -0.60* -0.38* -0.34* -0.12* -0.14* -0.28*
Variance Con. 0.021 0.047* 0.02* 0.013* 0.009* 0.013*
ARCH 0.044* 0.062* 0.04* 0.038* 0.12* 0.048*
GARCH 0.94* 0.92* 0.94* 0.95* 0.88* 0.94*
VIXCt 0.113* 0.21* 0.17* 0.14* 0.04* 0.096*
Normality Test 84.10* 562.85* 162.86* 158.55* 283.19* 111.22*
(Chi Square)
Notes: The symbol * indicates significance at the 5% level. The full transmission model allows
for the VIX fears through the mean return equation as well as through the volatility of return
equation. The variables are defined as follows: LAt-1, Latin America EM returns day t-1; EURt-1,
European EM returns; EMEAt-1, European, Middle East, and Africa EM returns; ASIAt-1, Asian
EM returns; FMt-1, Frontier Market (23 countries) returns; EMt-1, MSCI emerging market (23
countries) index; and VIXCt, changes in VIX.
32
Table 5 (Cont.). Linkages between VIX and Emerging Market Stock Returns under the Full
Transmission Model, 2003:6-2007:7 (Pre-Crisis Period)
Regressor LA EUR EMEA ASIA FM EM
Mean Const. 0.16* 0.20* 0.17* 0.17* 0.13* 0.074*
LAt-1 0.155* ------ ------- ------ ------ ------
EURt-1 ------ 0.097* ------ ------ ------ ------
EMEAt-1 ------ ------ 0.12* ------ ----- ------
ASIAt-1 ------ ------ ------ 0.11* ----- ------
FMt-1 ------ ------ ------ ------ 0.22* ------
EMt-1 ------ ------ ------ ------ ----- 0.22*
VIXCt -0.78* -0.15* -0.17* -0.11* -0.16* -0.28*
Variance Con. 0.058* 0.118* 0.06* 0.03* 0.03* 0.013*
ARCH 0.036* 0.08* 0.06* 0.05* 0.06* 0.048*
GARCH 0.92* 0.86* 0.89* 0.91* 0.87* 0.94*
VIXCt 0.22* 0.34* 0.27* 0.20* 0.12* 0.096*
Normality Test 24.26* 181.20* 103.11* 29.99* 20.54* 111.22*
(Chi Square)
Notes: The symbol * indicates significance at the 5% level. The full transmission model allows
for the VIX fears through the mean return equation as well as through the volatility of return
equation. The variables are defined as follows: LAt-1, Latin America EM returns day t-1; EURt-1,
European EM returns; EMEAt-1, European, Middle East, and Africa EM returns; ASIAt-1, Asian
EM returns; FMt-1, Frontier Market (23 countries) returns; EMt-1, MSCI emerging market (23
countries) index; and VIXCt, changes in VIX.
33
Table 5 (Cont.). Linkages between VIX and Emerging Market Stock Returns under the Full
Transmission Model, 2007:8-2009:3 (Crisis Period)
Regressor LA EUR EMEA ASIA FM EM
Mean Const. 0.05 0.05 0.07* 0.04 0.04 0.074*
LAt-1 0.187* ------ ------- ------ ------ ------
EURt-1 ------ 0.078* ------ ------ ------ ------
EMEAt-1 ------ ------ 0.10* ------ ----- ------
ASIAt-1 ------ ------ ------ 0.07 ----- ------
FMt-1 ------ ------ ------ ------ 0.24* ------
EMt-1 ------ ------ ------ ------ ----- 0.22*
VIXCt -0.77* -0.35* -0.31* -0.16* -0.28* -0.28*
Variance Con. 0.015* 0.078* 0.07* 0.03* 0.015* 0.013*
ARCH 0.001 0.069* 0.037* 0.02* 0.02* 0.048*
GARCH 0.99* 0.92* 0.94* 0.98* 0.99* 0.94*
VIXCt 0.32* 0.36* 0.36* 0.41* 0.21* 0.096*
Normality Test 13.6* 78.50* 21.86* 9.65* 8.10* 111.22*
(Chi Square)
Notes: The symbol * indicates significance at the 5% level. The full transmission model allows
for the VIX fears through the mean return equation as well as through the volatility of return
equation. The variables are defined as follows: LAt-1, Latin America EM returns day t-1; EURt-1,
European EM returns; EMEAt-1, European, Middle East, and Africa EM returns; ASIAt-1, Asian
EM returns; FMt-1, Frontier Market (23 countries) returns; EMt-1, MSCI emerging market (23
countries) index; and VIXCt, changes in VIX.
34
Table 5 (Cont.). Linkages between VIX and Emerging Market Stock Returns under the Full
Transmission Model, 2009:4-2014:12 (Post-Crisis Period)
Regressor LA-EM EUR-EM EMEA ASIA-EM FM EM
Mean Const. 0.013* 0.015 0.019 0.058* 0.04* 0.074*
LAt-1 0.11* ------ ------- ------ ------ ------
EURt-1 ------ 0.042* ------ ------ ------ ------
EMEAt-1 ------ ------ 0.04 ------ ----- ------
ASIAt-1 ------ ------ ------ 0.058* ----- ------
FMt-1 ------ ------ ------ ------ 0.176* ------
EMt-1 ------ ------ ------ ------ ----- 0.22*
VIXCt -0.51* -0.45* -0.40* -0.13* -0.11* -0.28*
Variance Con. 0.018* 0.028* 0.10* 0.010* 0.019* 0.013*
ARCH 0.047* 0.034* 0.03* 0.032* 0.07* 0.048*
GARCH 0.94* 0.95* 0.97* 0.96* 0.91* 0.94*
VIXCt 0.075* 0.19* 0.15* 0.105* 0.024* 0.096*
Normality Test 52.7* 316.15* 59.57* 19.81* 154.23* 111.22*
(Chi Square)
Notes: The symbol * indicates significance at the 5% level. The full transmission model allows
for the VIX fears through the mean return equation as well as through the volatility of return
equation. The variables are defined as follows: LAt-1, Latin America EM returns day t-1; EURt-1,
European EM returns; EMEAt-1, European, Middle East, and Africa EM returns; ASIAt-1, Asian
EM returns; FMt-1, Frontier Market (23 countries) returns; EMt-1, MSCI emerging market (23
countries) index; and VIXCt, changes in VIX.