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Convergence to market efficiency: the case of seasoned equity offering stocks

Convergence to market efficiency: the case of seasoned equity offering stocks This study examines the relationship between returns and contemporaneous and lagged-order imbalances by regression analysis. Conditional on contemporaneous imbalances, a significantly negative relationship is found between lagged-one imbalances and returns, except for a 10-minute time interval. This suggests that seasoned equity offering (SEO) markets converge to efficiency within 10 minutes. In addition, a GARCH model is used to examine the dynamic relationship between volatility and order imbalances. The empirical results demonstrate that market-makers effectively mitigate volatility in SEO announcements, demonstrating a price stabilisation capability in secondary market-making. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Investment Analysts Journal Taylor & Francis

Convergence to market efficiency: the case of seasoned equity offering stocks

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References (36)

Publisher
Taylor & Francis
Copyright
© 2015 Investment Analysts Society of South Africa
ISSN
2077-0227
eISSN
1029-3523
DOI
10.1080/10293523.2015.994445
Publisher site
See Article on Publisher Site

Abstract

This study examines the relationship between returns and contemporaneous and lagged-order imbalances by regression analysis. Conditional on contemporaneous imbalances, a significantly negative relationship is found between lagged-one imbalances and returns, except for a 10-minute time interval. This suggests that seasoned equity offering (SEO) markets converge to efficiency within 10 minutes. In addition, a GARCH model is used to examine the dynamic relationship between volatility and order imbalances. The empirical results demonstrate that market-makers effectively mitigate volatility in SEO announcements, demonstrating a price stabilisation capability in secondary market-making.

Journal

Investment Analysts JournalTaylor & Francis

Published: Jan 2, 2015

Keywords: market efficiency; order imbalance; seasoned equity offering; volatility

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