To require the appropriate Federal banking agencies to treat certain non-significant investments in the capital of unconsolidated financial institutions as qualifying capital instruments, and for other purposes.

Trust Preferred Securities Act of 2017 This bill requires federal banking agencies to treat as qualifying capital instruments certain investments in the capital of unconsolidated financial institutions. Specifically, the bill applies to investments in trust-preferred securities held prior to July 21, 2010, by a depository institution or holding company.