Liquidity production is a central function of banks. High leverage is optimal for banks in a model that has just enough frictions for banks to have a meaningful role in liquid-claim production. The model has a market premium for (socially valuable) safe/liquid debt, but no taxes or other...

Defining normal cash holdings as the holdings a firm with the same characteristics would have had in the late 1990s, we find that the average abnormal cash holdings of U.S. firms after the financial crisis amount to 10% of cash holdings, which represents an 87% increase in abnormal cash holdings...