Sell Side School Ties
We study the impact of social networks on agents' ability to gather superior information about firms. Exploiting novel data on the educational backgrounds of sell side equity analysts and senior officers of firms, we test the hypothesis that analysts' school ties to senior officers impart comparative information advantages in the production of analyst research. We find evidence that analysts outperform on their stock recommendations when they have an educational link to the company. A simple portfolio strategy of going long the buy recommendations with school ties and going short buy recommendations without ties earns returns of 5.40% per year. We test whether Regulation FD, targeted at impeding selective disclosure, constrained the use of direct access to senior management. We find a large effect: pre-Reg FD the return premium from school ties was 8.16% per year, while post-Reg FD the return premium is nearly zero and insignificant. In contrast, in an environment that did not change selective disclosure regulation (the UK), the analyst school-tie premium has remained large and significant over the entire sample period.
We would like to thank Josh Coval, Eugene Fama, Owen Lamont, and seminar participants at the University of Florida, Harvard Business School, SIFR, University of Chicago, Bentley College, and the Society of Quantitative Analysts for helpful comments. We also thank Nick Kennedy, Stephen Wilson, Laura Dutson, Matthew Healey, Meng Ning, Courtney Stone, and Bennett Surajat for excellent research assistance. In addition, we are grateful to BoardEx and Linda Cechova for providing firm board data, and to Devin Shanthikumar and Alexander Ljungqvist for sharing data with us. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.
Lauren Cohen & Andrea Frazzini & Christopher Malloy, 2010. "Sell-Side School Ties," Journal of Finance, American Finance Association, vol. 65(4), pages 1409-1437, 08. citation courtesy of