Inhibrx Biosciences (INBX) Options Chain

NASDAQ: INBXHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD

95.01+2.25 (+2.43%)

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

Expiration date

Expiration: Nov 20, 2026
Days to expiration: 40
Share price: $95.01
Put/call ratio (OI): 0.46
Put/call ratio (volume): 0.95
ATM implied volatility: 80.5%
Expected move: ±$25.33
Open interest (C / P): 840 / 390

INBX options summary

The INBX options chain for the November 20, 2026 expiration lists 31 call and 17 put contracts, with 40 days until expiration. Open interest stands at 840 calls and 390 puts, a put/call ratio of 0.46, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $95.00 strike is 80.5%, which implies the market expects a move of about ±$25.33 (26.7%) in Inhibrx Biosciences stock by expiration.

The most open interest sits at the $95.00 call (293 contracts) and the $95.00 put (265 contracts).

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

INBX options chain · November 20, 2026

INBX 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
0	—	—	44.00	0.00	0.00	30.00	—	—	—	—	—	—
1	—	194.7%	87.60	52.00	61.00	35.00	—	—	—	—	—	—
1	1	127.2%	54.22	45.90	55.00	45.00	0.10	10.00	1.85	245.5%	1	2
0	—	—	44.93	0.00	0.00	50.00	0.10	10.00	2.55	218.0%	—	1
—	—	—	—	—	—	60.00	0.00	4.70	1.00	128.6%	2	2
—	—	—	—	—	—	65.00	0.00	10.00	1.31	149.4%	10	12
—	—	—	—	—	—	70.00	0.10	10.00	4.04	130.6%	6	18
2	2	87.7%	31.36	19.00	26.90	75.00	0.00	0.00	8.83	12.5%	1	0
—	—	—	—	—	—	80.00	0.00	0.00	11.05	12.5%	1	0
0	2	—	21.00	0.00	0.00	85.00	2.00	11.00	6.90	90.0%	4	10
5	—	332.1%	15.60	38.00	45.20	90.00	4.00	12.30	8.90	84.9%	1	18
293	7	76.5%	9.60	7.00	12.40	95.00	7.00	14.40	11.00	84.6%	1	265
INBX $95.01
30	1	82.8%	12.00	5.00	11.90	100.00	0.00	0.00	21.00	—	2	0
7	2	80.8%	13.70	3.00	10.00	105.00	16.40	25.20	31.10	115.2%	1	3
24	1	88.3%	5.00	2.00	10.00	110.00	17.00	25.00	20.20	88.4%	6	7
36	2	102.9%	4.00	3.00	10.00	115.00	20.50	29.00	15.23	87.8%	2	17
14	2	99.5%	5.50	0.10	10.00	120.00	25.00	33.00	17.00	89.9%	15	21
54	18	108.0%	5.00	0.10	10.00	125.00	29.40	37.00	26.95	89.9%	1	12
20	1	120.4%	9.00	1.10	10.00	130.00	—	—	—	—	—	—
2	—	123.5%	5.50	0.20	10.00	135.00	—	—	—	—	—	—
3	—	178.5%	34.50	6.00	15.00	140.00	42.80	51.00	31.46	94.2%	1	2
3	2	136.2%	18.08	0.10	10.00	145.00	—	—	—	—	—	—
32	2	142.3%	5.00	0.10	10.00	150.00	—	—	—	—	—	—
7	5	153.5%	10.22	0.10	10.00	160.00	—	—	—	—	—	—
2	1	158.7%	2.10	0.10	10.00	165.00	—	—	—	—	—	—
1	—	163.8%	2.00	0.10	10.00	170.00	—	—	—	—	—	—
2	1	168.0%	1.90	0.00	10.00	175.00	—	—	—	—	—	—
6	1	173.1%	1.90	0.10	10.00	180.00	—	—	—	—	—	—
4	1	177.5%	1.90	0.10	10.00	185.00	—	—	—	—	—	—
3	1	181.2%	1.90	0.00	10.00	190.00	—	—	—	—	—	—
3	1	185.2%	1.90	0.00	10.00	195.00	—	—	—	—	—	—
278	1	134.4%	1.90	0.50	2.00	200.00	—	—	—	—	—	—
2	1	196.6%	1.90	0.00	10.00	210.00	—	—	—	—	—	—
1	1	203.6%	1.70	0.00	10.00	220.00	—	—	—	—	—	—
4	1	210.2%	1.90	0.00	10.00	230.00	—	—	—	—	—	—

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 INBX put/call ratio?

For the November 20, 2026 expiration, the INBX put/call ratio based on open interest is 0.46 (390 puts vs 840 calls), and 0.95 based on today's volume. A ratio above 1 means more puts than calls.

What is INBX's implied volatility?

At-the-money implied volatility for INBX options expiring November 20, 2026 is about 80.5%, an annualized estimate of how much the market expects Inhibrx Biosciences stock to move.

How many INBX option expiration dates are there?

INBX has 5 listed expiration dates, from Oct 16, 2026 to May 21, 2027.

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.