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The role of the trading volume in explaining the volatility persistence: evidence from Austrian, Belgian and French stock market

Chocholatá M.

Metody Informatyki Stosowanej

2011

nr 4

5-17

This paper deals with the role of the trading volume in explaining the volatility persistence for the daily data (both stock indices and individual stocks) from the Austrian, Belgian and French stock market. The main aim was to investigate the volatility – trading volume relation to find out if there are differences between stock indices and individual stocks concerning the reduction of the volatility persistence after inclusion of the trading volume into the conditional volatility equation. Unlike many other studies, our analysis in general didn’t confirm that the inclusion of the trading volume into the conditional volatility equation made the volatility persistence negligible. Furthermore there was also no difference observed concerning the results for index return series and individual stocks.