Jai R. Massari
  1. Partner

Ms. Massari is a partner in Davis Polk's Financial Institutions Group and the trading and markets practice, based in the Washington DC office. She advises major global banks, asset managers, and corporations on the requirements, impact and implementation of financial regulation, including reforms, focusing on derivatives regulation and the Volcker Rule.

Ms. Massari also advises financial institutions and technology companies on regulatory considerations for digital asset and blockchain businesses and investments. She frequently works with individual firms and industry organizations in connection with advocacy efforts on legislative and regulatory proposals.

Work Highlights

Ms. Massari has been active in providing regulatory advice to:

  • Financial institutions, asset managers, and trading platforms on derivatives regulations and the Volcker Rule
  • Cryptocurrency firms, financial institutions and asset managers on the full range of regulatory requirements for digital asset and cryptocurrency activities, including securities and derivatives, banking, money services, cryptocurrency specific laws (like the Bitlicense) and financial crimes considerations
  • Global stablecoin arrangements and their participants on financial regulatory and transactional matters
  • A wide range of clients on regulatory considerations for fintech and cryptocurrency product structures and transactional matters, including capital markets and M&A
  • Trade organizations and individual clients on legislative and regulatory advocacy on financial regulation, fintech and cryptocurrency topics


  • Chambers FinTech – Blockchain & Cryptocurrencies, USA 
  • Chambers USA – Financial Services Regulation: Broker Dealer (Compliance)
  • Global Banking Regulation Review – "45 Under 45," 2020

Of Note

  • Member, Law360 Editorial Advisory Board: Fintech, 2021
  • Visiting Lecturer in Law, Berkeley Law School, teaching "Introduction to the New Financial Regulation,"  2017-present
  • Global Advisory Board Member, Women in Law Empowerment Forum
  • Author, “Foreign Bank Cross-Border Trading Under the Volcker Rule: the ‘Trading Outside the United States’ Exemption’s Incongruous Consequences,” Capital Markets Law Journal, 10 (4): 523-541, 2015
  • Discussed in the CLS Blue Sky Blog
  • Co-Author, “The Perils of a Middle Road to Regulating Systemic Risk: The Volcker Rule’s Risk Backstop Provisions,” Georgetown Law Journal, Volume 104, No. 145, 2015
  • Co-Author, "Regulation Through Substitution as Policy Tool: Swap Futurization Under Dodd-Frank," Colum. Bus. L. Rev. 667, 2013
  • Discussed in The Economist
  • Co-Author, "Swap Trading Relationship Documentation, Confirmations, Portfolio, Reconciliation, and Portfolio Compression," OTC Derivatives Regulation Under Dodd-Frank: A Guide to Registration, Reporting, Business Conduct, and Clearing, 1st Edition, 2014
  • Panel Speaker, "Ethics," 38th FIA Law & Compliance Conference on the Regulation of Futures, Derivatives and OTC Products, 2016
  • Panel Speaker, "The Volcker Rule," BU School of Law's Review of Banking and Financial Law Symposium, 2016
  • Thought Leader on Financial Regulation, Davis Polk FinReg Blog, read Ms. Massari's posts

Professional History

  • Partner, 2017-present
  • Associate, Davis Polk, 2011-2017
  • Willkie Farr & Gallagher, 2007-2011

Bar Admissions

  • District of Columbia
  • State of California


  • B.A., Chemistry, Cornell University, 2000
  • J.D., Duke University School of Law, 2007
    • cum laude
    • Executive Editor, Law & Contemporary Problems