Banking Consolidation After Glass-Steagall Repeal (1999-2008)
1999-2008What Happened
The 1999 repeal of Glass-Steagall unleashed a merger frenzy as commercial banks, investment banks, and insurance companies combined into financial supermarkets. Citigroup merged with Travelers ($70B), JPMorgan absorbed Chase Manhattan ($36B), and Bank of America swallowed Fleet Boston, MBNA, and Countrywide. The Four Horsemen logic prevailed: only massive scale could fund technology, global reach, and regulatory compliance. Mid-size banks faced impossible unit economics and sold out. By 2007, five banks controlled 40% of U.S. banking assets.
Outcome
Mega-banks dominated markets, smaller banks sold at premiums, executives and investors profited enormously from deal activity.
The 2008 financial crisis revealed systemic risks from concentration. "Too big to fail" became a liability requiring bailouts, and Dodd-Frank imposed costly regulatory penalties on size.
Why It's Relevant Today
Asset management consolidation follows the same playbook—scale solves for fee and cost pressures—but risks creating systemic concentration and eventual regulatory backlash.
