Below are the types of agreements researched for the brokerage firms provided:
Insured deposit account agreement
Financial Sweep Deposit Agreement
Financial Sweep Deposit Account Brokerage and Servicing Agreement
Agreements between brokerage and customers
Summary of Findings
After one hour of preliminary research, and looking at all the brokerage firms provided, we have been able to find only one agreement between a bank and a brokerage, called "Financial Sweep Deposit Account Brokerage and Servicing Agreement", between the broker E*Trade Clearing LLC and E*Trade Bank.
We could not find "Insured deposit account agreements" or "Financial Sweep Deposit Agreement" between banks and brokerage firms.
We mostly found agreements between clients and brokerage firms.
With more time, we might be able to find more examples of such agreements between brokerage firms and banks.
In addition to this public search, we scanned our proprietary research database of over 1 million sources and were unable to find any specific research reports that address your goals.