ECB Supervisory Expectations — Prime Brokerage

Overview

The European Central Bank's (ECB) Supervisory Expectations for prime brokerage emerged primarily in the aftermath of the Archegos Capital Management collapse in March 2021, which caused over $10 billion in losses across global banks. The ECB's framework addresses client onboarding, counterparty credit risk (CCR) management, margining practices, and default management for banks engaged in prime brokerage activities.

In October 2023, the ECB published its comprehensive report, "Sound practices in counterparty credit risk governance and management," containing 43 sound practices that form the backbone of its supervisory expectations for prime brokerage. These expectations apply to euro area banks under ECB direct supervision and have become a de facto international benchmark.

Official citation: ECB report — Sound practices in counterparty credit risk governance and management (October 2023)

Who It Applies To

The ECB's supervisory expectations apply directly to significant institutions (SIs) — euro area banks under direct ECB supervision — that conduct prime brokerage activities. However, because many of these banks operate globally and interact with U.S. broker-dealers, the expectations have practical implications for any firm engaged in cross-border prime brokerage relationships.

Key Requirements

Client onboarding due diligence: Banks must conduct thorough due diligence on prime brokerage clients, including assessment of the client's investment strategy, leverage, liquidity, and risk management capabilities.
Counterparty credit risk governance: The ECB's 43 sound practices cover CCR identification, measurement, management, and reporting, with specific attention to concentrated exposures and wrong-way risk.
Dynamic margining: Margin requirements must be calibrated to the client's actual risk profile, with the ability to increase requirements rapidly in response to changing market conditions or client behavior.
Default management: Banks must maintain documented default management procedures, including close-out netting, collateral liquidation plans, and stress-tested contingency arrangements.
Capital requirements: Banks must hold sufficient capital to cover prime brokerage risks. For context, average overall CET1 (Common Equity Tier 1) requirements for significant institutions stood at approximately 11.3% for 2025, though individual requirements vary based on each bank's risk profile.
Stress testing: Regular stress testing of prime brokerage exposures under adverse scenarios, including client default, market dislocation, and liquidity stress.

How Loffa Helps You Comply

Prime Broker Interactive Network (PBIN)

Client onboarding documentation: PBIN supports the documentation and management of prime brokerage client onboarding, including agreement execution and client profile maintenance — elements central to the ECB's due diligence expectations.
Agreement standardization: PBIN's standardized prime brokerage agreement templates incorporate provisions aligned with international best practices, including those reflected in the ECB's expectations.
Cross-border relationship management: For firms operating across U.S. and European markets, PBIN provides a unified platform for managing prime brokerage relationships, helping ensure consistency with both SEC/FINRA and ECB requirements.
Audit and examination support: PBIN's comprehensive records of client relationships, agreement terms, and operational activity support the documentation requirements of ECB supervisory reviews.

Recent Updates

October 2023: The ECB published its report, "Sound practices in counterparty credit risk governance and management," containing 43 sound practices that significantly expanded its supervisory expectations for prime brokerage.
Post-Archegos reforms: Since 2021, the ECB has systematically increased its focus on prime brokerage risk management, with targeted supervisory reviews of banks' CCR frameworks.
Basel III implementation: Ongoing Basel III reforms continue to affect capital requirements for prime brokerage exposures, particularly around the treatment of leverage and counterparty credit risk.