Aldeyra Therapeutics shares surge 24.87% after-hours driven by heavy $2 strike call option activity and bullish trader positioning.

Aldeyra Therapeutics (ALDX) surged 24.87% in after-hours trading, driven by intense options activity in $2 strike price call contracts, which saw elevated leverage and turnover. The stock’s intraday rally of 20.7% earlier in the day, fueled by bullish positioning in short-term call options, continued into after-hours as traders capitalized on oversold technical conditions and high implied volatility. Despite a bearish sector backdrop for biotech stocks, ALDX’s move reflects speculative bets on a near-term rebound, with options data indicating strong demand for leveraged exposure. The FDA’s third rejection of Reproxalap, while a fundamental headwind, did not offset the immediate technical and options-driven momentum.