Warren Stephens, head of Stephens Inc, in Little Rock, Arkansas, says repeal of the Glass-Steagall Act was a mistake. U.S. banks should have a 5% cap on holdings of total deposits in the U.S., and no "grandfathering" of banks over the 5% limit. Five institutions controlling 50% of the deposits in the U.S. creates too much systemic risk in another financial crisis. Banks should be expected to be one or the other, commercial banks or investment banks, not both. These recommendations are not new. Bank of England Governor, Mervyn King, called for breaking up the largest banks or shrinking the size of the largest banks during the global financial crisis in 2008. This position for banks that are smaller in size is supported by veteran bankers Paul Volcker, Thomas Hoenig and other experts.