- The Fed's interest rate hikes have likely cost banks around $900 billion, Fundstrat's Tom Lee said.
- Lee made the case for central bankers to stop hiking rates, which would be bullish for stocks.
- He's predicted a 20% increase in the S&P 500 this year, with a strong rally taking off between March and April.
The Fed's aggressive rate hikes to control inflation have likely cost banks around $900 billion – and the collapse of Silicon Valley Bank is a sign that central bankers can stop tightening monetary policy, according to Fundstrat's head of research Tom Lee.