Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods

Stock prices and trading volumes are two important indicators of financial markets. As a result of the fluctuations caused by the economic crises in the markets, it is seen that the variance does not remain constant in financial market data over time. For this reason, in this study, volatility spill...

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Main Author: Letife Ozdemir
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-01-01
Series:Frontiers in Applied Mathematics and Statistics
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fams.2019.00065/full
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author Letife Ozdemir
author_facet Letife Ozdemir
author_sort Letife Ozdemir
collection DOAJ
description Stock prices and trading volumes are two important indicators of financial markets. As a result of the fluctuations caused by the economic crises in the markets, it is seen that the variance does not remain constant in financial market data over time. For this reason, in this study, volatility spillover between stock prices and trading volume is examined within the framework of the mixed distributions hypothesis in Turkish capital markets. The causality test in variance was applied to the data covering 02 January 1997−29 December 2017 period. In order to identify the impact of the 2008 global financial crisis, the data are divided into three sub-periods: the pre-crisis period (02 January 1997–29 September 2008), in-crisis period (3 October 2008–30 September 2009), and the post-crisis period (1 October 2009–29 December 2017). The findings indicate the existence of bidirectional volatility spillovers between stock price and trading volume in the pre- and post-crisis periods. In the crisis period, there is a unidirectional volatility spillover from stock prices to trading volume. This shows that while the volatility of stock price affects the trading volume with lags in the crisis period, the volatility of stock price and trading volume in the non-crisis periods affect each other. The results include important findings for both policymakers and investors and for future work.
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spelling doaj.art-fe77ef9f9bf548e78c83c11cd57d98c62022-12-22T00:53:32ZengFrontiers Media S.A.Frontiers in Applied Mathematics and Statistics2297-46872020-01-01510.3389/fams.2019.00065510917Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis PeriodsLetife OzdemirStock prices and trading volumes are two important indicators of financial markets. As a result of the fluctuations caused by the economic crises in the markets, it is seen that the variance does not remain constant in financial market data over time. For this reason, in this study, volatility spillover between stock prices and trading volume is examined within the framework of the mixed distributions hypothesis in Turkish capital markets. The causality test in variance was applied to the data covering 02 January 1997−29 December 2017 period. In order to identify the impact of the 2008 global financial crisis, the data are divided into three sub-periods: the pre-crisis period (02 January 1997–29 September 2008), in-crisis period (3 October 2008–30 September 2009), and the post-crisis period (1 October 2009–29 December 2017). The findings indicate the existence of bidirectional volatility spillovers between stock price and trading volume in the pre- and post-crisis periods. In the crisis period, there is a unidirectional volatility spillover from stock prices to trading volume. This shows that while the volatility of stock price affects the trading volume with lags in the crisis period, the volatility of stock price and trading volume in the non-crisis periods affect each other. The results include important findings for both policymakers and investors and for future work.https://www.frontiersin.org/article/10.3389/fams.2019.00065/fullstock pricestrading volumevolatility spillovercausality in variance testmixed distributions hypothesis
spellingShingle Letife Ozdemir
Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods
Frontiers in Applied Mathematics and Statistics
stock prices
trading volume
volatility spillover
causality in variance test
mixed distributions hypothesis
title Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods
title_full Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods
title_fullStr Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods
title_full_unstemmed Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods
title_short Volatility Spillover Between Stock Prices and Trading Volume: Evidence From the Pre-, In-, and Post Global Financial Crisis Periods
title_sort volatility spillover between stock prices and trading volume evidence from the pre in and post global financial crisis periods
topic stock prices
trading volume
volatility spillover
causality in variance test
mixed distributions hypothesis
url https://www.frontiersin.org/article/10.3389/fams.2019.00065/full
work_keys_str_mv AT letifeozdemir volatilityspilloverbetweenstockpricesandtradingvolumeevidencefromthepreinandpostglobalfinancialcrisisperiods