Lu Zheng

Paul Merage School of Business
University of California, Irvine
Irvine, CA 92617
Tel: 734/763-5392

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org
Institutional Affiliation: University of California at Irvine

NBER Working Papers and Publications

October 2013Home Bias and Local Contagion: Evidence from Funds of Hedge Funds
with Clemens Sialm, Zheng Sun: w19570
This paper analyzes the geographical preferences of hedge fund investors and the implication of these preferences for hedge fund performance. We find that funds of hedge funds overweight their investments in hedge funds located in the same geographical areas and that funds of funds with a stronger local bias exhibit superior performance. However, this local bias of funds of funds adversely impacts the hedge funds by creating excess comovement and local contagion. Overall, our results suggest that while local funds of funds benefit from local performance advantages, their local bias creates market segmentation that could destabilize financial markets.
November 2005Unobserved Actions of Mutual Funds
with Marcin Kacperczyk, Clemens Sialm: w11766
Despite extensive disclosure requirements, mutual fund investors do not observe all actions of fund managers. We estimate the impact of unobserved actions on fund returns using the return gap, which is defined as the difference between the reported fund return and the return of a portfolio that invests in the previously disclosed holdings after adjusting for expenses. Analyzing monthly return data on more than 2,500 unique U.S. equity funds over the period 1984-2003, we document a substantial cross-sectional heterogeneity and time-series persistence in the return gap, thus demonstrating that unobserved actions of some funds persistently create value, while such actions of others destroy value. Most important, we show that the return gap helps to predict future fund performance and conclude...

Published: Marcin Kacperczyk & Clemens Sialm & Lu Zheng, 2008. "Unobserved Actions of Mutual Funds," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 21(6), pages 2379-2416, November. citation courtesy of

September 2004On the Industry Concentration of Actively Managed Equity Mutual Funds
with Marcin Kacperczyk, Clemens Sialm: w10770
Mutual fund managers may decide to deviate from a well-diversified portfolio and concentrate their holdings in industries where they have informational advantages. In this paper, we study the relation between the industry concentration and the performance of actively managed U.S. mutual funds from 1984 to 1999. Our results indicate that, on average, more concentrated funds perform better after controlling for risk and style differences using various performance measures. This finding suggests that investment ability is more evident among managers who hold portfolios concentrated in a few industries.

Published: Marcin Kacperczyk & Clemens Sialm & Lu Zheng, 2005. "On the Industry Concentration of Actively Managed Equity Mutual Funds," Journal of Finance, American Finance Association, vol. 60(4), pages 1983-2011, 08. citation courtesy of

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