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Media type:
E-Article
Title:
Why Do Security Prices Change? A Transaction-Level Analysis of NYSE Stocks
Contributor:
Madhavan, Ananth;
Richardson, Matthew;
Roomans, Mark
Published:
Oxford University Press, 1997
Published in:
The Review of Financial Studies, 10 (1997) 4, Seite 1035-1064
Language:
English
ISSN:
0893-9454;
1465-7368
Origination:
Footnote:
Description:
This article develops and tests a structural model of intraday price formation that embodies public information shocks and microstructure effects. We use the model to analyze intraday patterns in bid-ask spreads, price volatility, transaction costs, and return and quote autocorrelations, and to construct metrics for price discovery and effective trading costs. Information asymmetry and uncertainty over fundamentals decrease over the day, although transaction costs increase. The results help explain the U-shaped pattern in intraday bid-ask spreads and volatility, and are also consistent with the intraday decline in the variance of ask price changes.