The Small World of Investing: Board Connections and Mutual Fund Returns

Lauren  Cohen; Andrea  Frazzini; Christopher J. Malloy

Article | Journal of Political Economy | October 2008

The Small World of Investing: Board Connections and Mutual Fund Returns

by Lauren Cohen, Andrea Frazzini and Christopher J. Malloy

Abstract

This paper uses social networks to identify information transfer in security markets. We focus on connections between mutual fund managers and corporate board members via shared education networks. We find that portfolio managers place larger bets on firms they are connected to through their network, and perform significantly better on these holdings relative to their non-connected holdings. A replicating portfolio of connected stocks outperforms a replicating portfolio of non-connected stocks by up to 7.8% per year. Returns are concentrated around corporate news announcements, consistent with mutual fund managers gaining an informational advantage through the education networks. Our results suggest that social networks may be an important mechanism for information flow into asset prices.

Keywords: Financial Markets; Information Management; Social and Collaborative Networks; Announcements; Investment Portfolio; Investment Return; Investment Funds; Asset Pricing; Governing and Advisory Boards;

Format: Print

29 pages

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Citation:

Cohen, Lauren, Andrea Frazzini, and Christopher J. Malloy. "The Small World of Investing: Board Connections and Mutual Fund Returns." Journal of Political Economy 116, no. 5 (October 2008): 951–979. (Winner of the Barclays Global Investors Award, Best Paper in Asset Pricing, European Finance Association 2007.)

Article | Journal of Finance | June 2020

Lazy Prices

Lauren Cohen, Christopher J. Malloy, Quoc Nguyen, Lauren Cohen, Christopher J. Malloy and Quoc Nguyen

We explore the implications of a subtle "default" choice that firms make in their regular reporting practices, namely that firms typically repeat what they most recently reported. Using the complete history of regular quarterly and annual filings by U.S. corporations from 1995 to 2014, we show that when firms make an active change in their reporting practices, this conveys an important signal about the firm. Changes to the language and construction of financial reports have strong implications for firms' future returns: a portfolio that shorts "changers" and buys "non-changers" earns up to 188 basis points per month (over 22% per year) in abnormal returns in the future. These reporting changes are concentrated in the management discussion (MD&A) section. Changes in language referring to the executive (CEO and CFO) team, or regarding litigation, are especially informative for future returns.

Keywords: information; default behavior; inertia; firms; annual reports; disclosure; Information; Business or Company Management; Behavior; Corporate Disclosure; Financial Reporting; United States;

Citation:

Cohen, Lauren, Christopher J. Malloy, and Quoc Nguyen. "Lazy Prices." Journal of Finance 75, no. 3 (June 2020): 1371–1415. (Winner of the First Prize, Chicago Quantitative Alliance Academic Paper Competition, 2016. Winner of the Jack Treynor Prize for superior work in the field of investment management and financial markets, sponsored by the Q-Group,The Institute for Quantitative Research in Finance, 2016. Winner of the Hillcrest Behavioral Finance Prize, 2016.) View Details

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Three years ago, Alvin Ang and his partner founded fidentiaX in Singapore, with the ambition to create the world’s first marketplace for tradable insurance policies on blockchain. With a 26-page white paper, the start-up closed a successful fundraising round through an initial coin offering (ICO). Three years later, however, the company still had not completed the infrastructure for the insurance trading platform. Besides the rapidly dwindling funds, fidentiaX had to fight with a tardy development team, uncooperative incumbent insurers, and begrudging investors. The case provides an overview of the blockchain industry and insights into the secondary life insurance market. Through the case, students will assess the company’s business strategies and learn about typical challenges faced by technology start-ups.

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The Small World of Investing: Board Connections and Mutual Fund Returns

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