Daily close, T-120 (4/4/25) through T+5. Run-up high $179.29 on 8/25/25, low $146.36 on 5/20/25 (T-120 to T-1). FDA decision 9/19/25. Historical price action, not a forecast.
Positioning before the decision
On Sep 5, 2025, 14 days before the decision date, at-the-money options priced a move of ±2.9% through Sep 26, 2025 (the first listed expiry after the decision; ATM implied volatility 15%). The stock closed +1.2% at the first close across the decision and +2.0% five trading days on. A straddle priced weeks out covers ordinary movement plus the event, so this is the move the options market priced through that expiry, not the event-implied move alone. How this compares across 1,000+ decisions.
Yes. The FDA approved the application for TREMFYA (guselkumab) on September 19, 2025. The primary source is linked on this page.
What was TREMFYA (guselkumab) under FDA review for?
The application covered Ulcerative Colitis Subcutaneous Induction (ASTRO) Crohn's Disease Subcutaneous Induction. The FDA approved the application on September 19, 2025.
How did JNJ stock react to the FDA decision?
On the decision day JNJ moved +1.2%. That is the recorded reaction to this specific event -- historical measurement, not a prediction, and not investment advice.