Arrowhead Pharmaceuticals (ARWR) Options Chain

NASDAQ: ARWRHealth CareBiotechnology: Pharmaceutical PreparationsUSD

62.75+2.01 (+3.31%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $62.75
Put/call ratio (OI): 0.77
Put/call ratio (volume): 0.84
ATM implied volatility: 157.7%
Expected move: ±$42.72
Open interest (C / P): 4.78K / 3.69K

ARWR options summary

The ARWR options chain for the December 18, 2026 expiration lists 28 call and 20 put contracts, with 68 days until expiration. Open interest stands at 4,778 calls and 3,686 puts, a put/call ratio of 0.77, which is fairly balanced between calls and puts. At-the-money implied volatility near the $62.50 strike is 157.7%, which implies the market expects a move of about ±$42.72 (68.1%) in Arrowhead Pharmaceuticals stock by expiration.

The most open interest sits at the $90.00 call (824 contracts) and the $80.00 put (920 contracts).

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

ARWR options chain · December 18, 2026

ARWR 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
1	4	84.2%	33.77	26.10	30.20	35.00	—	—	—	—	—	—
0	2	281.6%	40.20	34.50	38.20	40.00	0.00	0.00	0.20	25.0%	1	0
1	1	403.3%	42.53	40.70	44.70	45.00	0.00	2.75	0.90	75.0%	—	10
2	1	352.1%	33.13	36.00	40.00	50.00	0.15	2.35	1.90	55.5%	4	82
—	—	—	—	—	—	55.00	0.70	3.00	2.90	60.1%	3	114
—	—	—	—	—	—	57.50	2.10	3.70	2.95	57.4%	—	129
136	30	60.6%	7.30	6.10	9.70	60.00	2.85	5.50	3.90	51.2%	7	24
7	—	261.3%	32.70	25.60	28.50	62.50	3.80	7.70	6.60	54.2%	8	34
ARWR $62.75
122	20	53.4%	6.50	3.40	6.30	65.00	5.20	9.10	7.80	53.9%	1	526
33	2	57.3%	3.50	2.40	6.30	67.50	6.60	10.60	6.75	52.6%	50	72
696	1	65.7%	2.90	3.40	5.50	70.00	8.30	12.30	10.70	52.2%	5	622
102	30	59.2%	2.70	2.50	3.70	72.50	10.20	14.10	6.20	52.0%	1	31
149	300	61.2%	1.95	1.75	3.70	75.00	12.10	16.00	16.20	50.9%	300	252
21	1	56.0%	4.00	0.80	2.80	77.50	14.10	18.10	10.20	50.3%	11	19
739	327	58.5%	1.25	0.70	2.55	80.00	16.30	20.20	16.50	74.1%	300	920
113	1	55.8%	2.10	0.40	1.85	82.50	18.60	22.40	7.10	75.5%	3	5
482	60	56.0%	0.75	0.80	1.00	85.00	20.90	24.70	24.40	77.5%	5	510
27	8	55.3%	0.70	0.00	1.35	87.50	23.40	27.10	10.40	51.5%	7	16
824	61	54.6%	0.55	0.40	0.60	90.00	25.60	29.40	14.40	81.9%	30	227
64	1	62.3%	1.19	0.00	1.40	92.50	—	—	—	—	—	—
338	1	65.4%	0.90	0.00	1.40	95.00	30.30	34.30	13.30	87.8%	40	93
537	1	77.4%	0.30	0.00	2.00	100.00	35.20	39.30	18.30	94.4%	3	0
33	10	85.4%	1.10	0.00	2.25	105.00	—	—	—	—	—	—
41	10	90.2%	0.43	0.00	2.20	110.00	—	—	—	—	—	—
37	3	95.2%	0.13	0.00	2.20	115.00	—	—	—	—	—	—
134	1	99.3%	0.30	0.00	2.15	120.00	—	—	—	—	—	—
26	10	103.7%	0.15	0.00	2.15	125.00	—	—	—	—	—	—
22	14	107.8%	0.75	0.00	2.15	130.00	—	—	—	—	—	—
29	23	111.8%	0.50	0.00	2.15	135.00	—	—	—	—	—	—
62	5	115.5%	0.40	0.00	2.15	140.00	—	—	—	—	—	—

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 ARWR put/call ratio?

For the December 18, 2026 expiration, the ARWR put/call ratio based on open interest is 0.77 (3,686 puts vs 4,778 calls), and 0.84 based on today's volume. A ratio above 1 means more puts than calls.

What is ARWR's implied volatility?

At-the-money implied volatility for ARWR options expiring December 18, 2026 is about 157.7%, an annualized estimate of how much the market expects Arrowhead Pharmaceuticals stock to move.

How many ARWR option expiration dates are there?

ARWR has 8 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.