Institutional investors have become more active in corporate governance with the relaxation of Depression Era securities laws. The California Public Employees Retirement System (CalPERS) is a leading institutional activist. In this paper, we examine the relationship between CalPERS' public targeting and both short- and long-term stock returns to address what has been dubbed the “CalPERS effect.” Our results indicate evidence of an announcement effect and that, while there is also evidence of some long-term improvement, it is limited to 6 months from the announcement of the target list in the Wall Street Journal when more consistent empirical methodologies are employed.