Aldeyra Therapeutics (ALDX) Options Chain
NASDAQ: ALDXHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 39
- Share price
- $0.9163
- Put/call ratio (volume)
- 0.00
- Expected move
- ±$0.0374
- Open interest (C / P)
- 0 / 0
ALDX options summary
The ALDX options chain for the November 20, 2026 expiration lists 4 call and 3 put contracts, with 39 days until expiration. At-the-money implied volatility near the $1.00 strike is 12.5%, which implies the market expects a move of about ±$0.0374 (4.1%) in Aldeyra Therapeutics stock by expiration. The most open interest sits at the $0.50 call (0 contracts) and the $1.50 put (0 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ALDX options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.68 | 0.00 | 0.00 | 0.50 | — | — | — | |||||
| 0.30 | 0.00 | 0.00 | 1.00 | — | — | — | |||||
| 0.18 | 0.00 | 0.00 | 1.50 | 0.00 | 0.00 | 0.53 | |||||
| 0.05 | 0.00 | 0.00 | 2.00 | — | — | — | |||||
| — | — | — | 3.00 | 0.00 | 0.00 | 1.83 | |||||
| — | — | — | 4.00 | 0.00 | 0.00 | 2.70 | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is ALDX's implied volatility?
At-the-money implied volatility for ALDX options expiring November 20, 2026 is about 12.5%, an annualized estimate of how much the market expects Aldeyra Therapeutics stock to move.
How many ALDX option expiration dates are there?
ALDX has 6 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.