Praxis Precision Medicines (PRAX) Options Chain
NASDAQ: PRAXHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 8, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $263.55
- Put/call ratio (OI)
- 0.11
- Put/call ratio (volume)
- 0.33
- Expected move
- ±$1.14
- Open interest (C / P)
- 2.97K / 338
PRAX options summary
The PRAX options chain for the October 16, 2026 expiration lists 22 call and 16 put contracts, with 7 days until expiration. Open interest stands at 2,971 calls and 338 puts, a put/call ratio of 0.11, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $260.00 strike is 3.1%, which implies the market expects a move of about ±$1.14 (0.4%) in Praxis Precision Medicines stock by expiration.
The most open interest sits at the $500.00 call (1.70K contracts) and the $340.00 put (158 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
PRAX options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 200.00 | — | — | 0.50 | |||||
| 146.40 | 0.00 | 0.00 | 220.00 | — | — | — | |||||
| — | — | — | 240.00 | 0.00 | 0.00 | 1.95 | |||||
| 79.94 | 0.00 | 0.00 | 250.00 | 0.00 | 0.00 | 6.08 | |||||
| 100.00 | 0.00 | 0.00 | 260.00 | 0.00 | 0.00 | 12.40 | |||||
| — | — | — | 270.00 | 0.00 | 0.00 | 12.10 | |||||
| 17.80 | 0.00 | 0.00 | 280.00 | 0.00 | 0.00 | 11.36 | |||||
| 9.60 | 0.00 | 0.00 | 290.00 | 0.00 | 0.00 | 23.23 | |||||
| 7.60 | 0.00 | 0.00 | 300.00 | 0.00 | 0.00 | 22.70 | |||||
| 6.80 | 0.00 | 0.00 | 310.00 | 0.00 | 0.00 | 25.10 | |||||
| 6.18 | 0.00 | 0.00 | 320.00 | — | — | — | |||||
| 2.90 | 0.00 | 0.00 | 330.00 | 0.00 | 0.00 | 51.70 | |||||
| 4.50 | 0.00 | 0.00 | 340.00 | 0.00 | 0.00 | 43.90 | |||||
| 0.50 | 0.00 | 0.00 | 350.00 | 0.00 | 0.00 | 26.00 | |||||
| 2.80 | 0.00 | 0.00 | 360.00 | 0.00 | 0.00 | 44.72 | |||||
| 1.23 | 0.00 | 0.00 | 370.00 | 0.00 | 0.00 | 47.38 | |||||
| 0.50 | 0.00 | 0.00 | 380.00 | — | — | — | |||||
| 2.63 | — | — | 390.00 | — | — | — | |||||
| 0.90 | 0.00 | 0.00 | 400.00 | — | — | — | |||||
| 1.00 | 0.00 | 0.00 | 410.00 | — | — | — | |||||
| 0.50 | 0.00 | 0.00 | 420.00 | — | — | — | |||||
| 8.30 | 0.00 | 0.00 | 430.00 | — | — | — | |||||
| 0.75 | 0.00 | 0.00 | 450.00 | — | — | — | |||||
| — | — | — | 480.00 | 0.00 | 0.00 | 133.00 | |||||
| — | — | — | 490.00 | 0.00 | 0.00 | 131.00 | |||||
| 0.25 | 0.00 | 0.00 | 500.00 | — | — | — | |||||
| 1.72 | 0.00 | 0.00 | 550.00 | — | — | — | |||||
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 PRAX put/call ratio?
For the October 16, 2026 expiration, the PRAX put/call ratio based on open interest is 0.11 (338 puts vs 2,971 calls), and 0.33 based on today's volume. A ratio above 1 means more puts than calls.
What is PRAX's implied volatility?
At-the-money implied volatility for PRAX options expiring October 16, 2026 is about 3.1%, an annualized estimate of how much the market expects Praxis Precision Medicines stock to move.
How many PRAX option expiration dates are there?
PRAX has 9 listed expiration dates, from Oct 16, 2026 to Mar 17, 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.