Does this mean that SVB customers are going to lose deposits over the FDIC limit (250k?)
Keep your accounts lower than 250k
For full precision, if you're concerned about this, be aware that it's 250K per depositor at a given bank, rather than per account. That is, all your qualifying accounts at the bank are considered as one pool and 250K of that is insured. More detailed information, including how joint accounts are handled, here: https://www.fdic.gov/resources/deposit-insurance/financial-p...