Section 360.8 of the FDIC’s Rules and Regulations establishes practices for determining deposit and other account balances at a failed insured depository institution. It also includes a disclosure requirement for certain sweep accounts. The rule became effective August 18, 2008, but sweeps disclosure was delayed until July 1, 2009. An interim rule was issued in July 2008 and the final rule was published in February 2009.
FRB and ABA both had guidance on compliance. You should be able to find by looking for "Final Rule on Processing Deposit Accounts in the Event of an Insured Depository Institution Failure".
You will need to intimately knowledgable on the operations and processing procedures for your sweep products to nail down the answers needed to design your disclosures. It is not as easy as it looks at first glance.
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