Bank high-yield savings and MMFs are pushing 5%, some over, right now. See Bankrate.com. Open an IntraFi account as described weeks ago and let your banker open as many accounts as necessary in as many banks as necessary (stopping each acct short of 250k) as is necessary.
Easy peasy, was the point rather than telling a broker, your Brand New Broker, that he has to open 100 250k accounts to protect your 25 mil, which aren’t protected anyway.
READ a MMF prospectus… says they are NOT guaranteed