Mayer Brown’s Financial Markets Regulatory & Enforcement (FMRE) group serves the regulatory and enforcement needs of financial market participants, providing creative and practical solutions informed by industry knowledge. Our broker-dealer, securities, commodities, derivatives and financial services regulatory and enforcement lawyers are closely integrated, which allows us to advise clients on the most complex regulatory, compliance and enforcement matters, as well as on internal investigations.

Our practice includes a deep bench of alumni who worked for governmental agencies, self-regulatory organizations (SROs), and various market participants (including former general counsel and chief compliance officers), as well as federal prosecutors and other government officials.

The integration of Mayer Brown’s regulatory, compliance, enforcement and investigation capabilities enables us to represent our clients seamlessly in multi-faceted securities and derivatives matters.


We provide regulatory advice to a variety of market participants on some of the most complex issues relating to securities and derivatives regulation, including proposed and newly adopted rules and legislation, and the laws, rules and regulations governing the operations of market participants. We often interact with staff and Commissioners of the U.S. Securities and Exchange Commission (SEC) and the U.S. Commodity Futures Trading Commission (CFTC), as well as the Financial Industry Regulatory Authority, Inc. (FINRA) and other SROs.

Among other things, we help our clients navigate the regulatory approval process in connection with the launch of complex or novel products and services as well as the formation and registration of new regulated entities. Moreover, we call upon our deep regulatory experience and the insights of our transactional lawyers to advise financial market participants with respect to M&A and restructuring transactions as well as business expansions and changes in business operations.


We counsel clients on preventive measures to ensure compliance with the myriad rules that govern market participants. We take a holistic view that focuses on not only policies and procedures but also surveillance and systems and training tailored to a particular client’s needs.


We are called upon to conduct internal investigations on behalf of market participants involving a range of issues, including price and market manipulations, disruptive trading practices (including spoofing), fraudulent trading practices, registration failures, recordkeeping deficiencies, supervisory failures, and many other types of matters. We also represent clients in connection with government investigations and enforcement actions. In this respect, we have handled numerous matters before the SEC, CFTC, the U.S. Department of Justice (DOJ) and SROs.

Our clients value not only our deep knowledge and experience but also our practical perspectives, attention and detail and the ability to engage with regulators and prosecutors.

Our Clients

Our clients span from the world’s largest financial institutions to middle-market gems to burgeoning start-ups. We represent clients throughout the financial industry, including:

  • Global financial institutions;
  • Broker-dealers;
  • Futures commission merchants;
  • Introducing brokers;
  • Proprietary trading firms;
  • Commodity trading advisors;
  • Commodity pool operators;
  • Exchanges;
  • Clearinghouses;
  • Alternative trading systems;
  • Investment/fund managers; and
  • Technology providers.

We are focused on the business objectives of our clients, managing risks and utilizing resources efficiently to help clients achieve their goals. Based on the diverse nature of our clients coupled with our global presence, we believe that our FMRE team has an unmatched understanding of the business and legal issues that arise in complex regulatory, compliance and enforcement matters.

Free Writings & Perspectives
The Long and Short of It: Derivatives Blog
At the Crossroads: CFTC and DOJ Enforcement


Chambers USA

  • Nationwide: Financial Services Regulation: Banking (Compliance)
  • Nationwide: Financial Services Regulation: Banking (Enforcement & Investigations)
  • Nationwide: Financial Services Regulation: Consumer Finance (Compliance)
  • Nationwide: Financial Services Regulation: Consumer Finance (Enforcement & Investigations)
  • Financial Services Regulation: Broker Dealer (Compliance): Attorney Ranked Nationwide

"Mayer Brown has a very strong team of deep banking experts in every facet of legal, compliance and risk." Chambers USA (Client Testimonial)

The Legal 500 US

  • Finance: Financial Services Regulation (Banking and Consumer Finance)