I have no idea but maybe they are not solvent anymore (negative equity, even if small)? (I guess Fed will not loan to insolvent banks, but I do not know if that is the case?)
If so, would be interested to know if anyone knowledgeable in accounting rules could speculate a bit here what has happened - has any event forced a revaluation of assets on the books due to accounting rules for example?
I asked ChatGPT now about the federal reserve loans alternative:
Why would FDIC take over an unliquid bank instead of the bank just loaning money by the Federal Reserve?
The Federal Deposit Insurance Corporation (FDIC) is a US government agency responsible for protecting depositors and maintaining stability in the banking system. When an unliquid bank fails, the FDIC may step in to take over the bank and manage its operations.
One reason the FDIC may take over an unliquid bank instead of the bank just loaning money from the Federal Reserve is that the bank may be insolvent, meaning it does not have enough assets to cover its liabilities. In this case, simply borrowing from the Federal Reserve would not solve the underlying financial problems of the bank.
Taking over the bank allows the FDIC to manage its operations and assets, and potentially sell off its assets to recover some of the losses for depositors and creditors. This process is known as "resolution" and is intended to minimize the impact of a bank failure on the broader financial system.
Additionally, if the FDIC determines that the bank is not viable in the long term, it may choose to liquidate the bank, selling off its assets and using the proceeds to pay off depositors and creditors.
Overall, the decision to take over an unliquid bank instead of simply loaning money from the Federal Reserve depends on the specific circumstances of the bank and the broader financial system.