Bank dividends are unusually persistent. In a crisis, they exacerbate systemic risk and raise concerns for regulators. Bank managers, however, may keep dividends elevated to mitigate agency conflicts with shareholders. One theory holds that persistent dividends may substitute for monitoring by dispersed shareholders. A second theory proposes that they attract institutional shareholders who monitor banks, mitigate agency conflicts, and seek to protect their investments' value. After controlling for regulatory enforcement actions, we test both theories using 7722 bank-quarter observations spanning the 2007-2009 financial crisis. Our results suggest that dividend persistence increases with managerial agency conflicts but decreases in the presence of concentrated institutional shareholders, consistent with the second theory. In addition, contrary to the first theory, dispersed shareholders have no influence on bank dividend policies. Instead, these dispersed shareholders are associated with more frequent stock repurchase programs.