Silicon Valley Bank is a regional bank, so it's deeply involved in local businesses. As these tech firms see their revenues grow, the bank balances at Silicon Valley Bank expand as well. At that same time, the bank decides to invest its money in long dated treasuries,. 20 and 30 year Treasury bonds and agency securities, yielding 1% something like that. It's a good situation when you're receiving 1% or 2% and you're paying out 0.1% on deposits. But soon we have inflation. The Fed begins raising rates. And what begins to happen is deposits begin leaving both because of the fortunes of the tech firms. They're not keeping up after the pand