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ITG - Securities Fraud violations (Multi-Millions)

Constantine Cannon represented a whistleblower in a submission under the SEC Whistleblower Program relating to brokerage firm ITG's alleged violations of the firm’s dark pool, POSIT.  In May 2021, the SEC awarded our client 30% of the government's recovery, the maximum amount allowed under the program.  Read more -- CC

Visa/MasterCard - Antitrust Violations ($3 billion)

Constantine Cannon served as lead counsel representing Wal-Mart, Sears, Safeway and a class of roughly 5 million U.S. merchants in this antitrust class action alleging various forms of misconduct by Visa and MasterCard in their rules governing the use and marketing of Visa/MasterCard branded credit cards and debit cards.  After winning summary judgment on a majority of the claims, the parties settled the case in May 2003 with the plaintiff merchants Constantine Cannon served as lead counsel representing Wal-Mart, Sears, Safeway and a class of roughly 5 million U.S. merchants in this antitrust class action alleging various forms of misconduct by Visa and MasterCard in their rules governing the use and marketing of Visa/MasterCard branded credit cards and debit cards.  After winning summary judgment on a majority of the claims, the parties settled the case in May 2003 with the plaintiff merchants.