Prime Medicine (PRME) Options Chain
NASDAQ: PRMEHealth 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
- $3.99
- Put/call ratio (OI)
- 0.20
- Put/call ratio (volume)
- 0.04
- ATM implied volatility
- 107.6%
- Expected move
- ±$0.5505
- Open interest (C / P)
- 7.08K / 1.39K
PRME options summary
The PRME options chain for the October 16, 2026 expiration lists 8 call and 7 put contracts, with 6 days until expiration. Open interest stands at 7,075 calls and 1,392 puts, a put/call ratio of 0.20, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $4.00 strike is 107.6%, which implies the market expects a move of about ±$0.5505 (13.8%) in Prime Medicine stock by expiration.
The most open interest sits at the $3.00 call (2.42K contracts) and the $3.00 put (827 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
PRME options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 2.95 | 2.50 | 3.50 | 1.00 | — | — | — | |||||
| 1.15 | 1.55 | 2.35 | 2.00 | 0.00 | 0.25 | 0.14 | |||||
| 0.94 | 0.55 | 1.25 | 3.00 | 0.00 | 0.20 | 0.05 | |||||
| 0.21 | 0.20 | 0.30 | 4.00 | 0.00 | 0.45 | 0.30 | |||||
| 0.05 | 0.00 | 0.05 | 5.00 | 0.55 | 1.55 | 1.72 | |||||
| 0.01 | 0.00 | 0.80 | 6.00 | 1.55 | 2.55 | 3.13 | |||||
| 0.05 | 0.00 | 0.05 | 7.00 | 2.60 | 3.60 | 3.83 | |||||
| 0.15 | 0.00 | 1.00 | 8.00 | 3.50 | 4.50 | 4.34 | |||||
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 PRME put/call ratio?
For the October 16, 2026 expiration, the PRME put/call ratio based on open interest is 0.20 (1,392 puts vs 7,075 calls), and 0.04 based on today's volume. A ratio above 1 means more puts than calls.
What is PRME's implied volatility?
At-the-money implied volatility for PRME options expiring October 16, 2026 is about 107.6%, an annualized estimate of how much the market expects Prime Medicine stock to move.
How many PRME option expiration dates are there?
PRME has 6 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
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.