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Are price limits on futures markets that cool? Evidence from the Brazilian Mercantile and Futures Exchange

Are price limits on futures markets that cool? Evidence from the Brazilian Mercantile and Futures... This article investigates the impact of price limits on the Brazilian futures markets using high frequency data. The aim is to identify whether there is an ex ante cool-off or magnet effect. For that purpose, we examine a tick-by-tick data set that includes all contracts on the São Paulo stock index futures traded on the Brazilian Mercantile and Futures Exchange (BM&F) from January 1997 to December 1999. The results indicate that, altogether, there is a dominant cool-off effect in play and that the latter is much stronger for the floor rather than ceiling price. This explains why we observe more hits to the ceiling rather than to the floor in our sample despite the fact it covers one of the most turbulent periods for emerging markets. We then build a trading strategy that accounts for the cool-off effect in the conditional mean so as to demonstrate that the latter has not only statistical but also economic significance. The Sharpe ratio is indeed way superior to the buy-and-hold benchmarks we consider. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Financial Econometrics Oxford University Press

Are price limits on futures markets that cool? Evidence from the Brazilian Mercantile and Futures Exchange

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References (48)

Publisher
Oxford University Press
Copyright
Copyright © The Author 2007. Published by Oxford University Press.
Subject
Articles
ISSN
1479-8409
eISSN
1479-8417
DOI
10.1093/jjfinec/nbm001
Publisher site
See Article on Publisher Site

Abstract

This article investigates the impact of price limits on the Brazilian futures markets using high frequency data. The aim is to identify whether there is an ex ante cool-off or magnet effect. For that purpose, we examine a tick-by-tick data set that includes all contracts on the São Paulo stock index futures traded on the Brazilian Mercantile and Futures Exchange (BM&F) from January 1997 to December 1999. The results indicate that, altogether, there is a dominant cool-off effect in play and that the latter is much stronger for the floor rather than ceiling price. This explains why we observe more hits to the ceiling rather than to the floor in our sample despite the fact it covers one of the most turbulent periods for emerging markets. We then build a trading strategy that accounts for the cool-off effect in the conditional mean so as to demonstrate that the latter has not only statistical but also economic significance. The Sharpe ratio is indeed way superior to the buy-and-hold benchmarks we consider.

Journal

Journal of Financial EconometricsOxford University Press

Published: Feb 19, 2007

Keywords: cool-off effect futures markets magnet effect price limits transactions data

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