We investigate whether incentives to join the Fortune 500 affect corporate decisions. Firms closer to the cutoff appear to take actions to join the list by engaging in more mergers and acquisitions activity, bidding for larger targets, and paying higher takeover premia. Further, the relation is stronger for firms with more-entrenched chief executive officers, and the stock market reaction to bids is worse when bidders are close to the Fortune 500’s cutoff. A 1994 methodological change by Fortune acts as an exogenous shock for identification. Our results suggest that firms try to increase revenues to join the Fortune 500 but that such actions adversely affect shareholders.

We hypothesize that corporate takeover markets create significant constraints for short sellers. Both short sellers and corporate bidders often target firms with declining economic prospects. Yet, a target firm’s stock price generally increases upon a takeover announcement, resulting in losses for short sellers. Therefore, short sellers should require higher rates of return when the takeover likelihood is higher. Consistent with this prediction, the return predictability of monthly short interest increases with industry-level takeover probability and decreases as takeover defenses are implemented. Our results suggest that efficient takeover markets create trading frictions for short sellers and can therefore inhibit overall market efficiency.