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α: calibrated so average coauthorship-adjusted count equals average raw count
In the boom before the Great Depression, capital requirements for commercial banks were low and fixed. Bankers faced double liability. Failing banks were not bailed out. During the boom before the Great Recession, capital requirements were proportional to risk-weighted assets. Bankers faced limited liability. Banks deemed too big to fail received bailouts. During the 1920s, the largest banks increased capital levels as asset prices rose. During the boom from 2002 to 2007, the largest institutions kept capital levels near regulatory minimums. Our results suggest more market discipline would have induced the largest U.S. banks to hold greater capital buffers prior to the financial crisis of 2008.