Robinhood Antitrust Suit Over GameStop Losses Faces Uphill Climb

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.

The US Court of Appeals for the 11th Circuit heard arguments Thursday from attorneys of investors who say Robinhood colluded with global market maker Citadel Securities LLC to unfairly block them from trading high-flying stocks in 2021. Plaintiffs, who are seeking more than $10 billion in damages, failed in three attempts to convince a district court of their claims, and appealed the case to ...