Stock price jumps: news and volume play a minor role
In order to understand the origin of stock price jumps, we cross-correlate high-frequency time series of stock returns with different news feeds. We find that neither idiosyncratic news nor market wide news can explain the frequency and amplitude of price jumps. We find that the volatility patterns around jumps and around news are quite different: jumps are followed by increased volatility, whereas news tend on average to be followed by lower volatility levels. The shape of the volatility relaxation is also markedly different in the two cases. Finally, we provide direct evidence that large transaction volumes are_not_ responsible for large price jumps. We conjecture that most price jumps are induced by order flow fluctuations close to the point of vanishing liquidity.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Ray C. Fair, 2002.
"Events That Shook the Market,"
The Journal of Business,
University of Chicago Press, vol. 75(4), pages 713-732, October.
- Ray C. Fair, 2000. "Events that Shook the Market," Yale School of Management Working Papers ysm149, Yale School of Management.
- Ray Fair, 2003. "Events that Shook the Market," Yale School of Management Working Papers ysm307, Yale School of Management.
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