Evaluate a prime broker as a network of legal entities, accounts, custodians and services—not as a single brand or service label. Before comparing fees or execution, establish who holds each asset, which entity owes each obligation, how leverage and collateral work, and what happens if a provider or counterparty fails. Apply that analysis separately to each crypto asset: its legal classification and custody protections may differ from those of traditional securities.
What does a prime broker provide?
The Bank for International Settlements (BIS), in The prime broker-hedge fund nexus: recent evolution and implications for bank risks, describes prime brokerage as services offered to hedge funds and other non-bank financial institutions, usually by broker-dealers within large banking groups. The package may combine market access and execution with financing, custody, clearing, securities lending and operational support.
Those functions need not be provided by one company or legal entity. A brand may contract with a client through one entity, hold assets through another and route trades or provide custody through affiliates or third parties. The BIS paper reported that the largest prime brokers tend to be global systemically important banks and each serves more than 1,000 funds. It also reported over $4.5 trillion in gross assets at US-registered hedge funds at end-2022, excluding funds associated with a bank, broker-dealer or insurance company. These are contextual figures from the BIS paper, not current 2026 market totals or a measure of any one broker’s strength.
How should I choose a prime broker?
Build a like-for-like comparison around the services you actually need. Ask each candidate to identify the contracting, booking, custody, clearing and financing entities for each market and asset class; then request evidence that lets your legal, risk, operations and investment teams assess them. A broker’s service description is a starting list of claims, not independent proof of performance. For example, Cowen’s AIMA-hosted prime-brokerage description lists execution, custody, financing, securities lending, reconciliation, reporting and outsourced trading, while noting that offerings and third-party relationships may change.
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| Dimension | Evidence and questions to request | What the comparison should establish |
|---|---|---|
| Legal entity and jurisdiction | Contracting entity for each service; registrations and regulators; governing law; where assets and obligations are booked; entity-level insolvency analysis. | Which entity is responsible for each promise, and which legal regime and dispute process apply? |
| Service scope | Markets, instruments and asset classes covered; execution, clearing, custody, financing, lending and operational services; any affiliate or third-party role. | Whether the offered bundle matches your needs, and which services require separate agreements or providers. |
| Custody and segregation | Asset location and account structure; title and control; omnibus or segregated arrangements; reconciliation frequency; independent controls and records. | How assets are identified, controlled and accounted for, and what claims or recovery routes may apply if an entity fails. |
| Financing and leverage | Margin methodology; eligible collateral and haircuts; concentration limits; intraday calls; liquidation rights; close-out and cross-default terms. | How exposures could change under stress and what authority the broker has to call collateral or liquidate positions. |
| Execution and settlement | Venue access and routing; evidence used to assess execution quality; settlement model and timing; failed-trade procedures. | How orders are handled and when cash and assets become exposed before settlement completes. |
| Operations and data | Reporting frequency and latency; formats or APIs; daily reconciliation; break-resolution process; audit trail and named operational contacts. | Whether your team can independently reconcile positions and act on current information. |
| Resilience and default | Business-continuity and cyber-control information; recovery plans; default management; transfer or portability arrangements. | How service interruption, a counterparty default or a provider’s failure would be handled in practice. |
| Conflicts and economics | Full fee schedule; affiliate roles; principal trading; securities-lending revenue; rebates; collateral reuse and other permitted uses. | Where incentives may diverge from the client’s interests and what costs or uses are embedded in the arrangement. |
For each answer, record the source document, responsible entity, date or version, exceptions, and whether the answer is contractual or descriptive. Resolve contradictory answers before comparing providers. A headline price or broad service list cannot substitute for terms governing the specific account and transaction.
What should investors ask about leverage and counterparty risk?
Leverage is a core part of prime brokerage and a source of interconnected risk. The BIS highlights wrong-way risk, opaque positions, concentration and weak risk management as vulnerabilities. It defines wrong-way risk (WWR) as the risk that a prime broker’s credit exposure to a hedge-fund counterparty rises at the same time as the counterparty’s likelihood of default. A falling portfolio can therefore weaken the client just as collateral values, liquidity or the broker’s ability to manage exposure deteriorate.
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Ask for the methodology and contractual terms behind the risk controls—not just a general assurance that risk is monitored. The following questions are a practical diligence framework based on those risk mechanisms; they are not universal contractual standards:
- How are initial and maintenance margin calculated, and how can the methodology or rates change?
- Which assets qualify as collateral, what haircuts apply, and how are correlated or concentrated positions treated?
- Can the broker make intraday margin calls? What are the notice, cure and dispute processes?
- When may positions be liquidated, and how do close-out, cross-default and termination terms work?
- What position and exposure information can the broker see across the client’s accounts, affiliates and other counterparties?
- How does the broker monitor its own concentration to the client and the client’s concentration in less-liquid assets?
Compare answers using a common stress scenario, such as a sharp market move combined with reduced liquidity and a missed collateral call. Ask each provider to explain, under its actual agreement, the order of actions, decision-maker, notice process and records that would result. Do not assume that a broker can see or aggregate positions held elsewhere.
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How safe is custody through a prime broker?
“Custody” does not by itself establish who legally owns an asset, who controls it, how it is recorded, or what a client could recover in insolvency. Map the full custody and settlement chain for each asset: the account holder, custodian, any sub-custodian, the party controlling transfer instructions, the relevant ledger or wallet, and the entity responsible for records and reconciliation. Ask how assets are distinguished from the provider’s own property and from other clients’ assets, and how discrepancies are escalated.
The BIS and CPMI-IOSCO’s Principles for Financial Market Infrastructures provide useful prompts on legal basis, segregation, custody risk, settlement and default management. Those principles are directed most directly at financial market infrastructures—including payment systems, central securities depositories, settlement systems, central counterparties and trade repositories. A prime broker is not necessarily itself an FMI, so use relevant principles to scrutinize the clearing and custody chain rather than assuming every broker is directly governed by them.
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What is different about crypto custody?
Assess crypto asset by asset and transaction by transaction. Calling something “crypto” does not determine whether it is a security or what legal protections apply. Identify the exact token, account agreement, entity, jurisdiction and custody arrangement, and have counsel assess the resulting rights. Do not extrapolate protections for traditional securities to non-security crypto assets.
Confirm key control and operational safeguards
- Identify the custodian and account structure, including whether assets are held in omnibus or segregated arrangements.
- Ask who controls the private keys, how many authorizations are required for transfers, how wallet access is protected, and how recovery is handled if a key or control system is lost.
- Request the reconciliation process and records linking client entitlements to wallet balances and transaction activity.
- For SOC 1 or SOC 2 reports, check the report type, covered services, period, exceptions and service organizations. The existence of a report alone does not establish that custody is safe.
- Ask how settlement timing and failed or disputed transfers differ across exchange, over-the-counter and peer-to-peer transactions. Digital-asset transfers may be irreversible, and settlement may not provide delivery-versus-payment protection.
SEC Division of Investment Management staff’s March 12, 2019 statement, Engaging on Non-DVP Custodial Practices and Digital Assets, raised questions about key-pair control, records, SOC reports and settlement risk. It is older staff material that framed some matters as questions for public input—not a statement of current requirements. Treat it as a list of issues to examine, not a substitute for current legal analysis.
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Do not assume SIPC covers crypto
SEC Division of Trading and Markets staff’s Frequently Asked Questions Relating to Crypto Asset Activities and Distributed Ledger Technology says that SIPC generally does not protect customer claims for non-security crypto assets held by a SIPC-member broker-dealer. Staff also notes that non-security crypto may not be covered by another specific insolvency regime, leaving customers exposed to loss if the broker-dealer fails. The staff FAQ says an arrangement under Article 8 of the Uniform Commercial Code may help in some circumstances, but it is not a guarantee; its effect depends on the actual asset, agreement, entity, jurisdiction and facts.
The FAQ expressly presents Division staff views, not a rule, regulation or Commission-approved statement. For a particular account, ask counsel to analyze the governing documents and applicable law rather than relying on a general description of custody or an assumed protection scheme.
Check adviser custody obligations separately
For an SEC-registered investment adviser with custody of client funds or securities, Investor.gov says advisers generally must use a qualified custodian and generally undergo an annual surprise examination, subject to applicable rules and exceptions. Whether and how those obligations apply to a particular digital asset or arrangement depends on the facts and current law. Verify the provider’s current registrations and the adviser’s obligations directly with counsel; a provider’s name or marketing material is not proof of status.
How do clearing, custody and prime brokerage differ?
- Execution is handling or routing an order to a venue or counterparty.
- Clearing is the process of establishing and managing obligations arising from trades, which may involve intermediaries and a clearing organization.
- Settlement is the exchange or transfer of the cash and assets owed under a trade.
- Custody is holding or administering assets and the associated records and controls.
- Prime brokerage is a broader service relationship that may combine financing, market access, custody, clearing, securities lending and operational support.
A single provider may offer several of these functions, but the labels do not establish that it performs them itself. For each trade and asset, document who executes, clears, settles and holds it, and how the handoffs are reconciled. Where a clearing or custody chain includes an FMI, assess the relevant control and default-management arrangements for that institution as well as the broker’s responsibilities.
How should the final decision be made?
- Define the mandate. List the asset classes, markets, financing needs, custody requirements and reporting or operating integrations that matter to your strategy.
- Map entities and flows. For each service, record the contracting entity, booking location, custodian, affiliates or third parties, and how assets and obligations move.
- Request evidence. Obtain governing agreements, fee schedules, custody and segregation details, margin and collateral terms, reporting samples, controls information and default or recovery procedures.
- Test difficult cases. Walk through a missed collateral call, operational outage, failed settlement and provider insolvency using the proposed agreement and actual service chain.
- Compare like with like. Use the same questions and assumptions across providers. Separate contractual commitments from marketing statements and identify information that remains unverified.
- Document approval and monitoring. Have legal, risk, operations and investment decision-makers record unresolved issues, limits, escalation contacts and the events that would trigger a review.
A strong selection is not necessarily the provider with the broadest bundle. It is the arrangement whose legal responsibilities, asset protections, financing terms, operational controls and failure procedures your organization can verify and govern.
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