Abby F. Rudzin


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Abby Rudzin is a seasoned litigator with more than two decades of experience representing financial institutions and Fortune 500 companies and their officers and directors in high-stakes litigation matters, primarily in the securities and antitrust arenas. Her clients range from the largest financial institutions to smaller investment banks and private equity firms, along with public companies and their officers and directors in various industries.

Honors & Awards

  • Litigator of the Week, The American Lawyer, January 4, 2018
  • US Supreme Court victory for China Agritech named a National Impact Case by Benchmark Litigation California, March 2019


Bar Admissions

  • New York

Court Admissions

  • US Supreme Court
  • US Court of Appeals for the Second, Third, Fourth, Seventh, and Ninth Circuits
  • US District Courts, District of Colorado, Northern District of Illinois, and the Eastern, Southern, and Western Districts of New York


  • The University of Chicago, J.D., 1995: with honors; Order of the Coif; Olin Foundation Fellowship in Law and Economics; Staff Member, The University of Chicago Law Review
  • Cornell University, A.B., Mathematics and Economics, 1991: cum laude; Phi Beta Kappa; Cornell Club of Maryland Scholarship
  • Oxford University, Oriel College, Oxford, England, 1989-1990

Professional Activities


  • Honorable Frank H. Easterbrook, US Court of Appeals, Seventh Circuit (1996-1997)
  • Honorable Elaine P. Bucklo, US District Court, Northern District of Illinois (1995-1996)


  • “Loss Causation and Damages Defense Strategies,” Inside the Minds: Managing Securities Fraud Claims, Aspatore Books (2009)



  • Antitrust Expert Training Academy, New York State Bar Association (October 2018)
  • Lead counsel for investment bank accused of aiding and abetting special committee’s breach of fiduciary duty in approving related-party transaction.
  • Lead counsel for large derivatives exchange defending claims arising out of fraud perpetrated by futures commissions merchant engaged in trading on the exchange.
  • Represented Chinese company in successful U.S. Supreme Court case about class certification and statute of limitations tolling in securities fraud cases. The U.S. Supreme Court significantly limited the scope of American Pipe tolling—an issue that will significantly impact class actions generally.
  • Lead counsel for leading Chinese on-line game operator in securities fraud class action challenging going-private transaction.
  • Lead counsel for large public insurance company defending litigation over shareholder books and records demand.