To my knowledge all accounts are covered up to $250k from FDIC insurance. And those that needs more than $250k liquidity they usually spread it around different banks
Discussion
FDIC doesnt have enough assets compared to deposits in USA banks.
Yeah if multiple banks start failing at the same time they probably would not be able to cover it but we are talking only about one bank
Usually.
What if other banks are involved in a bank run?
What SVB did, I bet is not a rare thing.