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 new swap regulations, including registration requirements, cross-border and regulatory impacts
  • Financial institutions on the Volcker Rule, including on implementation and advocacy efforts
  • Financial institutions, technology companies, and asset managers on the regulation of digital currency and blockchain activities under securities, derivatives, and other U.S. regulatory requirements
  • Trade organizations in connection with legislative and regulatory advocacy


Ms. Massari has been recognized as a leading lawyer in: 

  • Chambers FinTech Legal – 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
  • Thought Leader on Financial Regulation, Davis Polk FinReg Blog, read Ms. Massari's posts
  • 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
  • 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
  • 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
  • Visiting Lecturer in Law, Berkeley Law School, teaching course "Introduction to the New Financial Regulation," Spring 2017

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