Mr Cooper Group Inc (COOP)

[Dmdmd2020]

Per the 2011 Congressional subcommittee hearings report:

https://www.hsgac.senate.gov/download/report-psi-staff-report-wall-street-and-the-financial-crisis-anatomy-of-a-financial-collapse

Page 118-119 (PDF page 125-126 of 646)

"Before WCC was able to act as a sole underwriter, WaMu and Long Beach worked with a variety of investment banks to arrange, underwrite, and sell its RMBS securitizations, including Bank of America, Credit Suisse, Deutsche Bank, Goldman Sachs, Lehman Brothers, Merrill Lynch, Royal Bank of Scotland, and UBS. To securitize its loans, WaMu typically assembled and sold a pool of loans to a qualifying special-purpose entity (QSPE) that it established for that purpose, typically a trust.436 The QSPE then issued RMBS securities secured by future cash flows from the loan pool. Next, the QSPE – working with WCC and usually an investment bank – sold the RMBS securities to investors, and used the sale proceeds to repay WaMu for the cost of the loan pool. Washington Mutual Inc. generally retained the right to service the loans. WaMu or Long Beach might also retain a senior, subordinated, residual, or other interest in the loan pool."

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IMO...conclusion:

It's explicitly explained that WMI subsidiaries did retain beneficial interests in MBS Trusts other than just Residual Tranches!