Abby Rudzin

O'Melveny & Myers LLP

$ $$$

New York 10036 NY US

Abby F. 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.


  • 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.
  • Defending financial services firm in numerous market manipulation and RICO claims filed around the country complaining about “naked short selling.”
  • Obtained dismissal for for China’s leading on-line book sellers in securities fraud class action challenging going-private transaction.
  • Defending private equity firm in securities fraud class action arising out of secondary offering to sell firm’s shares.
  • Obtained dismissal for Silicon Valley technology firm in breach of contract action arising out of alleged change in control.
  • Defending large financial institution in antitrust actions concerning credit card “swipe” fees.
  • Obtained dismissal for pharmaceutical company of federal securities class action concerning failed new drug application and successfully defended dismissal on appeal.
  • Obtained dismissal of breach of contract claim against private equity firm arising out of failed transaction and successfully defended dismissal on appeal.
  • Obtained dismissal of federal antitrust class action alleging that client and other leading private equity firms conspired to allocate the market for large leveraged buyout transactions by improperly forming “bidding clubs” for the acquisitions.
  • Obtained dismissal of federal securities class action for underwriting syndicate involved in initial public offering of Argentine energy company.
  • Defended major health insurance company and its independent directors in derivative and securities fraud class actions as well as related SEC and DOJ investigations involving allegations of stock options backdating.


  • New York
  • 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


  • 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)


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New York 10036 NY US
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Lina Stillman

Broadway 42
New York 10004 NY US