Interactive Brokers is trading 4% up at $93.47 amid a broad U.S. equity rebound on August 21, 2026.
- The Dow is up 0.89%, while the S&P 500 and Nasdaq are also higher, supporting a risk-on backdrop.
- Financial and investment services stocks are reported higher.
- No clear company-specific announcement, earnings surprise, or analyst action directly explains the move; recent company news predates August 21.