aTyr Pharma (ATYR) Options Chain
NASDAQ: ATYRHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 6
- Share price
- $0.2462
- Put/call ratio (OI)
- 0.12
- Put/call ratio (volume)
- 3.50
- ATM implied volatility
- 825.0%
- Expected move
- ±$0.2604
- Open interest (C / P)
- 127 / 15
ATYR options summary
The ATYR options chain for the October 16, 2026 expiration lists 3 call and 3 put contracts, with 6 days until expiration. Open interest stands at 127 calls and 15 puts, a put/call ratio of 0.12, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $0.50 strike is 825.0%, which implies the market expects a move of about ±$0.2604 (105.8%) in aTyr Pharma stock by expiration.
The most open interest sits at the $0.50 call (83 contracts) and the $0.50 put (10 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ATYR options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 0.02 | 0.00 | 0.05 | 0.50 | 0.15 | 0.35 | 0.20 | |||||
| 0.05 | 0.00 | 0.05 | 1.00 | 0.70 | 0.80 | 0.80 | |||||
| — | — | — | 2.00 | 1.70 | 1.80 | 1.70 | |||||
| 0.03 | 0.00 | 0.65 | 4.00 | — | — | — | |||||
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 the ATYR put/call ratio?
For the October 16, 2026 expiration, the ATYR put/call ratio based on open interest is 0.12 (15 puts vs 127 calls), and 3.50 based on today's volume. A ratio above 1 means more puts than calls.
What is ATYR's implied volatility?
At-the-money implied volatility for ATYR options expiring October 16, 2026 is about 825.0%, an annualized estimate of how much the market expects aTyr Pharma stock to move.
How many ATYR option expiration dates are there?
ATYR has 6 listed expiration dates, from Oct 16, 2026 to Jan 21, 2028.
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.