Webull (BULL) shares plummeted 20% after a US House panel identified the company's China ties as a national security risk. The sharp decline followed the congressional committee's formal flagging of concerns regarding the brokerage firm's connections to Chinese entities. The sell-off reflects growing regulatory scrutiny over fintech platforms with cross-border ownership structures. Market participants reacted swiftly to the legislative warning, driving significant downward pressure on BULL stock as investors reassessed geopolitical exposure risks.