According to a whistleblower who provided testimony to the House Judiciary Committee, Bank of America handed over Jan. 6 banking records without informing its customers. Furthermore, the bank did this completely of its own volition; the FBI didn’t even ask it to do this.
And, if you happened to have purchased a gun using a Bank of America credit card, debit card, check, or wire transfer, then you got bumped up to the top of the FBI list when the bank sent it over.