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

After hours: 62.75 0.00%

Expiration date

Expiration: Oct 16, 2026
Days to expiration: 7
Share price: $62.75
Put/call ratio (OI): 0.21
Put/call ratio (volume): 0.67
ATM implied volatility: 64.2%
Expected move: ±$5.58
Open interest (C / P): 8.91K / 1.83K

ARWR options summary

The ARWR options chain for the October 16, 2026 expiration lists 21 call and 13 put contracts, with 7 days until expiration. Open interest stands at 8,908 calls and 1,834 puts, a put/call ratio of 0.21, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $62.50 strike is 64.2%, which implies the market expects a move of about ±$5.58 (8.9%) in Arrowhead Pharmaceuticals stock by expiration.

The most open interest sits at the $80.00 call (1.28K contracts) and the $75.00 put (583 contracts).

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

ARWR options chain · October 16, 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	—	85.2%	17.45	10.80	14.90	50.00	—	—	—	—	—	—
—	—	—	—	—	—	55.00	0.00	0.80	0.63	76.5%	1	37
795	59	73.9%	3.50	2.95	5.60	60.00	0.20	2.25	1.20	64.8%	3	311
263	163	73.0%	2.25	1.45	4.20	62.50	0.15	3.70	2.05	55.4%	24	48
ARWR $62.75
368	35	54.5%	1.05	0.75	1.50	65.00	1.30	4.40	5.00	83.5%	2	475
612	10	61.1%	0.45	0.25	1.15	67.50	3.30	7.30	6.15	55.6%	1	11
1,125	109	75.8%	0.40	0.30	1.00	70.00	5.60	9.60	8.80	62.1%	6	97
132	39	82.3%	0.26	0.05	0.90	72.50	—	—	—	—	—	—
532	70	79.3%	0.18	0.20	0.25	75.00	10.40	14.40	14.55	72.7%	301	583
140	10	104.4%	0.16	0.00	0.85	77.50	—	—	—	—	—	—
1,278	5	92.8%	0.18	0.10	0.20	80.00	15.50	19.40	20.40	98.0%	14	249
54	1	148.2%	0.05	0.00	1.60	82.50	18.10	21.90	10.00	112.5%	—	0
1,131	2	144.6%	0.15	0.10	1.00	85.00	20.50	24.30	21.72	110.7%	2	23
63	6	183.8%	0.10	0.00	2.15	87.50	22.80	26.80	6.60	100.8%	1	0
1,114	1	123.4%	0.05	0.00	0.25	90.00	25.30	29.30	22.85	107.8%	106	0
210	3	205.4%	0.05	0.00	2.20	92.50	—	—	—	—	—	—
93	8	214.8%	0.20	0.00	2.20	95.00	30.20	34.30	27.80	50.0%	66	0
1	1	224.0%	0.20	0.00	2.20	97.50	—	—	—	—	—	—
206	2	203.7%	0.30	0.00	1.25	100.00	—	—	—	—	—	—
76	3	248.1%	0.43	0.00	2.15	105.00	—	—	—	—	—	—
689	250	263.5%	0.40	0.00	2.15	110.00	—	—	—	—	—	—
25	5	277.9%	0.10	0.00	2.15	115.00	—	—	—	—	—	—

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 October 16, 2026 expiration, the ARWR put/call ratio based on open interest is 0.21 (1,834 puts vs 8,908 calls), and 0.67 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 October 16, 2026 is about 64.2%, 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.