Wall Street

Barstool Sports founder Dave Portnoy took Robinhood CEO Vladimir Tenev to task over his company's conduct during last month's dramatic surge of GameStop's stock fueled by a group of amateur traders. 

The upbeat outlook from the U.S. retailer follows better-than-expected sales in the holiday quarter as stimulus checks and strong online demand eased the blow from the health crisis.

The company's same-store sales jumped 24.5% in the fourth quarter ended Jan. 31, beating analysts' average estimate of an 18.9% increase.

GameStop Corp. shares surged Monday after the investor Keith Gill doubled his stake in the video game retailer.

WallStreetBets founder Jaime Rogozinski provides insight into retail investing on the heels of House lawmakers grilling Robinhood, Reddit and Citadel CEOs over the GameStop trading frenzy.