Check this out. Suppliment to the 424B Prospectus for Bank of America. Page 26 of 77: https://www.sec.gov/
They admit to not “owning” the stocks, certs, notes, etc they “hold” for others.
They switched the site since I last visited but the intel is still in there. Has to be. The wording is much different also.
Start here and type in Company Name: https://www.sec.gov/
On left. S3, 10K, and 424B are most interesting. Go into 424B Prospectus here: https://www.sec.gov/
Then, at the bottom of the page you will find “Suppliment Prospectus” Click on it and it takes you to the doc above.
Same process with any “lender” to do research on Company admitting to SEC, they do NOT OWN the underlying financial instruments.