Factoring Information into Returns
27 Pages Posted: 23 Jun 2004
Date Written: July 27, 2005
Abstract
We examine the potential profits of trading on a measure of private information (PIN) in a stock. A zero-investment portfolio which is size neutral, but long in high PIN stocks and short in low PIN stocks earns a significant abnormal return. The Fama-French and momentum factors do not explain this return. However, significant covariation in returns exists among high PIN stocks and among low PIN stocks, suggesting that PIN might proxy for an underlying factor. We create a PIN factor as the monthly return on the zero-investment portfolio above and show that it has some success in explaining returns to independent PIN-size portfolios.
JEL Classification: G12, M41
Suggested Citation: Suggested Citation
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