Janux Therapeutics (JANX) Options Chain
NASDAQ: JANXHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $18.39
- Put/call ratio (OI)
- 0.07
- Put/call ratio (volume)
- 0.58
- Expected move
- ±$4.32
- Open interest (C / P)
- 544 / 36
JANX options summary
The JANX options chain for the November 20, 2026 expiration lists 7 call and 3 put contracts, with 40 days until expiration. Open interest stands at 544 calls and 36 puts, a put/call ratio of 0.07, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $17.50 strike is 71.0%, which implies the market expects a move of about ±$4.32 (23.5%) in Janux Therapeutics stock by expiration.
The most open interest sits at the $20.00 call (362 contracts) and the $17.50 put (35 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
JANX options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 7.75 | 4.00 | 8.10 | 12.50 | 0.00 | 0.00 | 0.30 | |||||
| 5.40 | 2.00 | 6.00 | 15.00 | — | — | — | |||||
| 2.20 | 0.45 | 3.20 | 17.50 | 0.00 | 3.30 | 2.25 | |||||
| 1.35 | 0.00 | 1.30 | 20.00 | 0.60 | 3.90 | 2.91 | |||||
| 0.55 | 0.00 | 2.00 | 22.50 | — | — | — | |||||
| 1.20 | 0.00 | 2.25 | 25.00 | — | — | — | |||||
| 0.20 | 0.00 | 2.00 | 30.00 | — | — | — | |||||
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 JANX put/call ratio?
For the November 20, 2026 expiration, the JANX put/call ratio based on open interest is 0.07 (36 puts vs 544 calls), and 0.58 based on today's volume. A ratio above 1 means more puts than calls.
What is JANX's implied volatility?
At-the-money implied volatility for JANX options expiring November 20, 2026 is about 71.0%, an annualized estimate of how much the market expects Janux Therapeutics stock to move.
How many JANX option expiration dates are there?
JANX has 7 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.