Janux Therapeutics (JANX) Options Chain

NASDAQ: JANXHealth CareBiotechnology: Pharmaceutical PreparationsUSD

18.39-0.11 (-0.59%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $18.39
Put/call ratio (OI): 1.71
Put/call ratio (volume): 1.66
ATM implied volatility: 74.4%
Expected move: ±$7.01
Open interest (C / P): 723 / 1.24K

JANX options summary

The JANX options chain for the January 15, 2027 expiration lists 9 call and 9 put contracts, with 96 days until expiration. Open interest stands at 723 calls and 1,236 puts, a put/call ratio of 1.71, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $17.50 strike is 74.4%, which implies the market expects a move of about ±$7.01 (38.1%) in Janux Therapeutics stock by expiration.

The most open interest sits at the $15.00 call (265 contracts) and the $25.00 put (421 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

JANX options chain · January 15, 2027

JANX calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
3	—	70.3%	8.78	8.80	13.00	7.50	0.00	0.20	0.20	100.4%	1	1
165	180	114.5%	9.01	7.40	10.60	10.00	0.00	2.25	0.36	144.2%	2	32
60	30	81.5%	5.08	4.50	8.50	12.50	0.00	2.50	0.93	110.4%	81	12
265	16	85.3%	5.01	4.00	5.80	15.00	0.75	1.55	1.04	73.1%	207	108
160	10	81.5%	3.43	2.70	4.20	17.50	1.50	2.60	2.05	67.3%	25	308
JANX $18.39
32	20	78.2%	2.00	0.45	4.20	20.00	2.90	4.00	3.30	65.3%	80	206
31	88	83.6%	1.41	0.00	3.60	22.50	3.20	7.40	6.55	66.5%	32	138
2	1	107.8%	0.80	0.05	4.20	25.00	6.30	8.50	7.05	68.3%	146	421
5	1	99.6%	0.80	0.00	2.15	30.00	9.80	13.80	9.90	61.1%	—	10

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 January 15, 2027 expiration, the JANX put/call ratio based on open interest is 1.71 (1,236 puts vs 723 calls), and 1.66 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 January 15, 2027 is about 74.4%, 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.