Actually, most banks have mismatched duration. Accepting short term deposits in checking accounts and giving out longer term mortgage and business loans. SVB un

Actually, most banks have mismatched duration. Accepting short term deposits in checking accounts and giving out longer term mortgage and business loans. SVB undertook a strategy that had a similar duration as issuing loans, and via a portfolio of govt treasuries - as safe and liquid as it gets (outside of interest risk). The broader concern, with hindsight, is they had an extremely correlated/flighty deposit base compared to most banks, and that meant they should NOT have copied what other banks did. They needed to keep duration on the loan book much shorter and have much more liquidity/equity cushion.