Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 61 - 62 of 62

Full-Text Articles in Social and Behavioral Sciences

Tobacco Control And The Role Of Litigation: A Survey Of Issues In Law, Policy, And Economics, Basil C. Bitas, Pedro B. Barros Jan 2008

Tobacco Control And The Role Of Litigation: A Survey Of Issues In Law, Policy, And Economics, Basil C. Bitas, Pedro B. Barros

Research Collection Yong Pung How School Of Law

No abstract provided.


Estimating The Dynamics Of Mutual Fund Alphas And Betas, Harry Mamaysky, Matthew Spiegel, Hong Zhang Jan 2008

Estimating The Dynamics Of Mutual Fund Alphas And Betas, Harry Mamaysky, Matthew Spiegel, Hong Zhang

Research Collection Lee Kong Chian School Of Business

This article develops a Kalman filter model to track dynamic mutual fund factor loadings. It then uses the estimates to analyze whether managers with market-timing ability can be identified ex ante. The primary findings are as follows: (i) Ordinary least squares (OLS) timing models produce false positives (nonzero alphas) at too high a rate with either daily or monthly data. In contrast, the Kalman filter model produces them at approximately the correct rate with monthly data; (ii) In monthly data, though the OLS models fail to detect any timing among fund managers, the Kalman filter does; (iii) The alpha and …