Some argue too-big-to-fail (TBTF) status increases the value of the largest banks. In contrast, we find that the value of the largest banks is negatively related to asset size in normal times, but much less so during the crisis. Further, shareholders lose when large banks cross a TBTF threshold through acquisitions. The negative relation between bank value and bank size for the largest banks cannot be explained by differences in ROA, ROE, equity volatility, tail risk, distress risk, or equity discount rates, but it can be partly explained by the market’s discounting of trading activities. Received December 20, 2017; editorial decision November 14, 2018 by Editor Itay Goldstein.

We examine the impact of corporate board reforms around the world on stock price crash risk. Using a sample of firms in 41 economies that passed major board reforms between 1990 and 2012, we find that board reforms are associated with a significant reduction in crash risk of about 13%. The effect of reforms on crash risk is stronger among firms with more severe ex ante agency problems. Our analysis further suggests that board reforms reduce crash risk by improving financial transparency and enhancing investment efficiency. In sum, our findings are consistent with the notion that board reforms improve board oversight and mitigate agency problems.