Triparty Custody Cash Sweep Concentration Risk
What Is Triparty Custody Cash Sweep Concentration Risk?
The systemic credit and counterparty exposure that occurs when an investment platform sweeps all customer uninvested cash into a single clearing bank or single commercial money market provider, eliminating institutional custodial diversification.
Concentration Exposure = max_{Single Bank i} [ Deposited Sweep Volume_i / Total Customer Sweep Reserves ] (High Risk > 50%)
Cole Barrett's Reality Check
The Unvarnished Bottom Line"Diversification isn't just for your stock picks; it's for your cash. If your broker advertises $2.5 million in FDIC insurance, look at how they do it. A safe broker distributes your cash across ten different banks in $250,000 slices. A lazy broker dumps your entire balance at a single partner bank. If that single bank goes under, your cash above $250,000 is an unsecured creditor claim."
Interactive Simulator: Test the Math
Real-World Example: Scenario Breakdown
Examining the real numbers for: An investor holding $800,000 in uninvested cash across a retail broker cash sweep program during a regional banking panic
| Execution Metric | Multi-Bank Insured Sweep Client | Single-Bank Sweep Depositor |
|---|---|---|
| Fee / Rate | $0 account fees | $0 advertised fees |
| Spread / Buffer | Broker utilizes an automated multi-bank sweep program distributing cash across 4 independent FDIC-insured banks ($200k each) | Broker swept the entire $800,000 balance into a single regional commercial bank partner |
| Execution / Status | 100% of the $800,000 balance was fully covered by statutory sovereign deposit insurance guarantees | Partner bank entered regulatory receivership; FDIC covered only the statutory $250,000 ceiling |
| Total Cost / Result | Total capital preservation via multi-bank sweep diversification | Suffered substantial uninsured capital exposure from sweep concentration |
How Brokers Weaponize This Term
Open your brokerage account settings and download the 'Cash Sweep Participating Bank List'. If your broker sweeps cash to fewer than 5 partner banks or holds more than $250,000 at any single institution, opt out and move excess cash into a direct Treasury bill fund like SGOV.
Broker Evaluation Matrix
Cole Approves
Wealthsimple: Provides institutional cash sweep protection by distributing client funds across up to five partner banks to provide up to $500,000 in CDIC deposit insurance.
Read Audit →Cole Flags / Avoids
Single-Partner Fintech Apps: Holds customer deposits at single regional partner banks without multi-bank sweep programs, leaving balances exposed to deposit flight shocks.
View Trap Details →Frequently Asked Questions
How does a multi-bank sweep program provide multi-million-dollar FDIC coverage?
By using automated intra-bank networks (like IntraFi / Promontory) that break your deposit into chunks under $250,000 and distribute them across dozens of separate chartered banks.
Can I choose which banks hold my cash in a sweep program?
Yes. Most compliant brokerages allow you to 'opt out' of specific banks on their sweep list if you already hold deposits with them directly, avoiding overlapping insurance limits.