Institutional investors and the limits of arbitrage

• 成果类型: Article
• 署名作者: Lewellen, Jonathan
• 署名单位: Dartmouth College
• 刊物名称: JOURNAL OF FINANCIAL ECONOMICS
• ISSN/ISSBN: 0304-405X
• DOI: 10.1016/j.jfineco.2011.05.012
• 发表日期: 2011
• 页码: 62-80
• 关键词: institutional investors; arbitrage; trading strategies

摘要

The returns and stock holdings of institutional investors from 1980 to 2007 provide little evidence of stock-picking skill. Institutions as a whole closely mimic the market portfolio, with pre-cost returns that have nearly perfect correlation with the value-weighted index and an insignificant CAPM alpha of 0.08% quarterly. Institutions also show little tendency to bet on any of the main characteristics known to predict stock returns, such as book-to-market, momentum, or accruals. While particular groups of institutions have modest stock-picking skill relative to the CAPM, their performance is almost entirely explained by the book-to-market and momentum effects in returns. Further, no group holds a portfolio that deviates efficiently from the market portfolio. (C) 2011 Elsevier B.V. All rights reserved.