Katie Arcieri

A group of current and former mixed martial artists won class action status in an antitrust lawsuit against Ultimate Fighting Championship that accused it of monopolizing the market for fighters.

MultiPlan Inc. is facing a new antitrust suit alleging that it organized a conspiracy among competing commercial health insurance payers to reduce reimbursements paid to healthcare providers for out-of-network services.

A Berkshire Hathaway-owned insulation company faces revived antitrust claims after the Tenth Circuit held that a district court improperly dismissed a monopoly claim against it.

The three biggest credit reporting companies in the US are getting sued on antitrust grounds over refusing to include unpaid medical bills under $500 on consumer credit reports.

A travel services firm faces revived antitrust claims, after the Ninth Circuit ruled a district court erred when it said Tzell Travel was unable to conspire on a price-fixing scheme with its affiliate.

Binance Holdings Ltd. is facing a lawsuit alleging it violated securities and competition laws for attempts to monopolize the cryptocurrency platform market, the latest legal challenge for the company.

Investors who allege they lost billions of dollars in a GameStop Corp. stock trading frenzy will face a high bar in convincing an appeals court to point the finger at financial trading platform Robinhood Markets Inc.

General Dynamics Faces Antitrust Suit Over No-Poach Agreements

The Major League Baseball Players Association is backing an effort to eliminate to Major League Baseball’s antitrust exemption in an amicus brief filed with the US Supreme Court.

The dismissal of a second price-fixing case against world-famous hotel-casinos will guide courts grappling with questions in similar suits alleging the use of algorithmic software violates antitrust law.