On 26 June 2026, the United States Securities and Exchange Commission and the United States Commodity Futures Trading Commission issued a joint request for public comment on potential approaches to further implement and harmonise portfolio margining and cross-margining frameworks across securities, security-based swaps, futures, swaps and related positions. The consultation forms part of a wider regulatory effort to address the increasingly convergent structure of United States financial markets, where market participants frequently manage economically related positions across products that fall within separate securities and derivatives regulatory regimes.
The central regulatory concern is that current account, margin, segregation and bankruptcy frameworks may require related positions to be maintained in separate accounts, thereby limiting the ability of firms and customers to recognise economically offsetting exposures across securities and derivatives portfolios. This may result in excess collateral requirements, fragmented liquidity management and operational inefficiencies without necessarily producing a corresponding enhancement in market stability or customer protection.
The joint request for comment is therefore significant not because it immediately changes existing margin rules, but because it signals a coordinated SEC–CFTC review of whether margin treatment should better reflect portfolio-level risk across products. The agencies have invited market participants to comment on existing portfolio margining models, customer protection considerations, cross-product offsets, capital treatment, collateral treatment, segregation, clearing agency and derivatives clearing organisation issues, risk methodologies, operational implementation and the potential effect of expanded portfolio margining on liquidity and competition.
This consultation is particularly relevant for broker-dealers, futures commission merchants, swap dealers, security-based swap dealers, clearing agencies, derivatives clearing organisations, proprietary trading firms, market makers, institutional investors and financial groups operating across both securities and derivatives markets. Firms with cross-asset trading strategies may consider to assess whether their present margin, collateral, liquidity and customer-protection frameworks are capable of supporting a more integrated portfolio-margining environment.
The consultation also raises important issues i.e. any future expansion of portfolio margining or cross-margining will need to reconcile differences between securities accounts, futures accounts, swap accounts and security-based swap accounts. It will also require careful treatment of customer property, segregation, insolvency priorities, regulatory capital, clearinghouse risk models and disclosure obligations. The agencies have specifically sought data-driven submissions, including empirical analysis on margin efficiency, collateral usage, liquidity effects, operational costs and risk-management outcomes.
This consultation could be an early-warning of possible structural reform in United States market infrastructure regulation. Relevant entities may consider to review existing arrangements for margin optimisation, cross-product hedging, collateral allocation, clearing memberships, account documentation, customer disclosures and stress-testing. Where firms rely on offsetting exposures across securities and derivatives, they may consider to identify whether current rules create avoidable collateral drag or operational fragmentation, and whether a regulatory submission should be made during the comment period.
While no immediate compliance deadline arises other than the public comment deadline (Click here to drop in comments for US SEC Consultation), the consultation may be considered to be monitored closely because it may shape future SEC–CFTC coordination on margin harmonisation, cross-product risk recognition and the regulatory treatment of integrated trading books. Relevant entities may consider mapping existing securities and derivatives positions, identify cross-product offsets that are not presently recognised for margin purposes, review account structures and segregation treatment, assess collateral inefficiencies, consult clearing arrangements, evaluate operational readiness for expanded cross-margining and consider submitting data-supported comments to the US SEC and US CFTC.
