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Are Momentum Profits Robust to Trading Costs?

Are Momentum Profits Robust to Trading Costs? ABSTRACT We test whether momentum strategies remain profitable after considering market frictions induced by trading. Intraday data are used to estimate alternative measures of proportional and non‐proportional (price impact) trading costs. The price impact models imply that abnormal returns to portfolio strategies decline with portfolio size. We calculate break‐even fund sizes that lead to zero abnormal returns. In addition to equal‐ and value‐weighted momentum strategies, we derive a liquidity‐weighted strategy designed to reduce the cost of trades. Equal‐weighted strategies perform the best before trading costs and the worst after trading costs. Liquidity‐weighted and hybrid liquidity/value‐weighted strategies have the largest break‐even fund sizes: $5 billion or more (relative to December 1999 market capitalization) may be invested in these momentum strategies before the apparent profit opportunities vanish. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Finance Wiley

Are Momentum Profits Robust to Trading Costs?

The Journal of Finance , Volume 59 (3) – Jun 1, 2004

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References (38)

Publisher
Wiley
Copyright
© American Finance Association
ISSN
0022-1082
eISSN
1540-6261
DOI
10.1111/j.1540-6261.2004.00656.x
Publisher site
See Article on Publisher Site

Abstract

ABSTRACT We test whether momentum strategies remain profitable after considering market frictions induced by trading. Intraday data are used to estimate alternative measures of proportional and non‐proportional (price impact) trading costs. The price impact models imply that abnormal returns to portfolio strategies decline with portfolio size. We calculate break‐even fund sizes that lead to zero abnormal returns. In addition to equal‐ and value‐weighted momentum strategies, we derive a liquidity‐weighted strategy designed to reduce the cost of trades. Equal‐weighted strategies perform the best before trading costs and the worst after trading costs. Liquidity‐weighted and hybrid liquidity/value‐weighted strategies have the largest break‐even fund sizes: $5 billion or more (relative to December 1999 market capitalization) may be invested in these momentum strategies before the apparent profit opportunities vanish.

Journal

The Journal of FinanceWiley

Published: Jun 1, 2004

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