Banks tumble as SVB ignites capitalization fears
reuters.com
reuters.com
Robinhood is though FDIC insured via a sweep program if I remember right. So you'll get your money one way or another.
-https://robinhood.com/us/en/support/articles/deposit-sweep-p...
However (you knew that was coming, right?) none of these things, including the FDIC insurance, are instantaneous. But they are much faster, at least for retail, than days gone by. Lehman retail accounts were mostly transferred to solvent brokers within a week. Of course if you need to sell something (or buy to cover) every hour of waiting could be costly.
ref: https://libertystreeteconomics.newyorkfed.org/2019/01/custom...