Genius Sports is trading 10.2% down at $5.82 after falling from the September 17 close of $6.48; no confirmed company-specific negative catalyst has been identified for September 18, 2026.
- The company launched Prediction.com on September 17.
- Filings showed CEO Mark Locke sold 800,000 shares across September 15–17, potentially adding selling pressure but not establishing causation.
- Broader markets are modestly lower, though not enough to clearly explain the move.