Information technology and its impact on stock returns and trading volume

Uri Benzion, Tchai Tavor () and Joseph Yagil
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Uri Benzion: Ben Gurion University, Israel, Postal: Ben Gurion University, Israel
Joseph Yagil: School of Management, University of Haifa, Israel, Postal: School of Management, University of Haifa, Israel

International Journal of Finance & Economics, 2010, vol. 15, issue 3, pages 247-262

Abstract: This study investigates the impact of information technology on common stock returns and trading volume. By focusing mainly on the peak period of the hi-tech phenomenon, the findings imply that the market response to website launching is positive. During the event day and the two preceding days, the abnormal stock return and the abnormal trading volume both are positive and statistically significant. In particular, the impact is stronger for non-US firms than for domestic companies, for initial rather than subsequent site launches, for those sites that are launched on Monday rather than on other days of the week, and for innovative industries such as electronics and computers. As expected, while the launch of a website had a stronger effect at the beginning of the hi-tech phenomenon, the impact has diminished in later years. Copyright © 2009 John Wiley & Sons, Ltd.

Date: 2010
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