Arm (ARM) Options Chain

NASDAQ: ARMTechnologySemiconductorsUSD

266.28-9.01 (-3.27%)

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

Expiration date

Expiration: Oct 23, 2026
Days to expiration: 12
Share price: $266.28
Put/call ratio (OI): 1.01
Put/call ratio (volume): 0.89
ATM implied volatility: 59.1%
Expected move: ±$28.53
Open interest (C / P): 4.88K / 4.95K

ARM options summary

The ARM options chain for the October 23, 2026 expiration lists 50 call and 50 put contracts, with 12 days until expiration. Open interest stands at 4,885 calls and 4,952 puts, a put/call ratio of 1.01, which is fairly balanced between calls and puts. At-the-money implied volatility near the $265.00 strike is 59.1%, which implies the market expects a move of about ±$28.53 (10.7%) in Arm stock by expiration.

The most open interest sits at the $350.00 call (506 contracts) and the $160.00 put (402 contracts).

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

ARM options chain · October 23, 2026

ARM 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
—	—	—	—	—	—	140.00	0.00	2.52	0.10	198.6%	—	2
—	—	—	—	—	—	150.00	0.00	3.40	0.42	191.4%	4	1
—	—	—	—	—	—	155.00	0.00	3.40	0.48	182.0%	4	24
13	22	147.2%	162.65	105.05	109.00	160.00	0.00	2.93	0.60	167.6%	4	402
—	—	—	—	—	—	165.00	0.00	2.93	0.13	158.9%	1	36
1	3	122.8%	99.39	94.90	98.65	170.00	0.00	2.73	0.12	148.3%	2	76
—	—	—	—	—	—	175.00	0.00	0.18	0.13	91.2%	2	12
—	—	—	—	—	—	180.00	0.00	0.92	0.38	107.8%	1	11
—	—	—	—	—	—	185.00	0.00	1.26	0.45	106.9%	2	59
—	—	—	—	—	—	190.00	0.00	1.40	0.71	102.3%	4	55
—	—	—	—	—	—	195.00	0.00	0.58	0.15	82.0%	2	85
1	1	90.7%	68.14	65.30	68.80	200.00	0.04	0.24	0.16	68.6%	18	177
0	1	85.2%	64.87	60.30	63.90	205.00	0.00	0.28	0.28	63.3%	6	62
4	4	80.2%	92.37	55.40	58.95	210.00	0.15	0.58	0.36	67.5%	13	158
1	—	76.3%	78.65	50.55	54.10	215.00	0.21	0.70	0.48	64.3%	28	387
2	1	72.4%	48.40	45.70	49.30	220.00	0.29	0.96	0.69	62.3%	5	198
—	—	—	—	—	—	225.00	0.70	1.00	0.83	60.3%	16	50
3	1	66.6%	93.51	36.35	39.95	230.00	1.04	1.44	1.32	59.4%	61	98
2	1	59.9%	49.97	31.65	34.75	235.00	1.61	2.01	1.82	58.8%	105	238
22	2	63.1%	75.73	27.40	31.50	240.00	2.31	2.69	2.49	57.7%	63	302
3	1	63.8%	53.68	24.30	27.15	245.00	3.20	4.05	3.55	58.2%	40	149
53	5	63.0%	22.55	21.15	22.95	250.00	4.40	5.15	4.96	57.0%	40	217
33	1	62.6%	51.38	17.90	19.55	255.00	6.25	6.80	6.55	57.5%	23	155
68	4	61.9%	16.35	14.75	16.55	260.00	7.80	9.45	8.85	58.0%	34	177
69	32	60.7%	12.92	12.05	13.50	265.00	10.45	11.30	10.97	57.5%	87	225
ARM $266.28
127	66	61.3%	10.60	10.05	11.15	270.00	12.70	14.70	13.49	58.2%	347	280
120	19	60.8%	8.52	8.05	8.95	275.00	15.50	18.15	16.75	58.8%	27	126
77	68	61.3%	6.97	6.50	7.30	280.00	18.85	21.60	19.85	59.1%	30	317
126	18	62.0%	5.55	4.95	6.25	285.00	22.50	25.00	23.45	58.7%	43	146
153	86	63.0%	4.50	4.20	4.95	290.00	26.60	29.05	28.10	60.0%	9	77
152	49	62.2%	3.47	3.25	3.70	295.00	30.55	33.25	31.74	60.2%	8	82
338	233	63.1%	2.79	2.70	2.90	300.00	34.85	37.90	36.00	62.0%	7	139
128	28	64.4%	2.33	2.15	2.44	305.00	38.60	42.50	39.80	60.2%	1	24
79	98	65.2%	2.02	1.69	2.00	310.00	43.00	47.00	41.70	59.2%	2	62
85	39	66.1%	1.47	1.34	1.63	315.00	47.85	51.45	47.50	59.1%	1	33
385	114	67.1%	1.21	1.07	1.35	320.00	52.60	56.20	48.05	59.2%	1	157
310	25	67.8%	1.08	0.83	1.10	325.00	57.40	61.00	59.07	59.0%	2	64
190	38	69.3%	0.85	0.67	0.96	330.00	63.05	65.85	62.02	67.8%	2	51
159	7	71.0%	0.76	0.50	0.91	335.00	67.30	70.70	38.00	60.5%	1	15
156	1	72.2%	0.66	0.05	1.14	340.00	72.20	75.60	31.58	59.8%	—	3
247	13	73.1%	0.52	0.12	0.86	345.00	76.95	80.60	73.65	54.3%	2	15
506	28	75.6%	0.45	0.38	0.54	350.00	82.70	85.45	55.47	72.5%	2	2
29	3	79.4%	0.34	0.04	0.93	355.00	86.85	90.40	46.95	101.0%	1	1
114	4	79.5%	0.41	0.17	0.60	360.00	91.80	95.50	55.20	106.0%	—	1
33	4	85.9%	0.41	0.05	0.94	365.00	—	—	—	—	—	—
66	2	89.3%	0.39	0.00	1.02	370.00	101.85	105.35	60.00	111.0%	1	1
85	2	90.8%	0.36	0.00	0.92	375.00	106.95	110.05	59.07	109.7%	—	0
210	13	88.3%	0.23	0.15	0.47	380.00	111.75	115.50	71.25	119.9%	—	0
63	37	117.4%	1.40	0.00	2.82	385.00	—	—	—	—	—	—
115	5	96.2%	0.22	0.00	0.75	390.00	—	—	—	—	—	—
9	4	99.8%	0.20	0.10	0.70	395.00	—	—	—	—	—	—
131	35	96.9%	0.17	0.12	0.42	400.00	131.75	135.30	85.05	129.5%	—	0
96	16	105.5%	0.21	0.00	0.70	410.00	141.90	145.30	120.34	135.5%	1	0
21	2	137.7%	0.40	0.00	2.77	420.00	—	—	—	—	—	—
9	1	143.2%	0.39	0.00	2.77	430.00	—	—	—	—	—	—
44	1	118.2%	0.17	0.10	0.54	440.00	—	—	—	—	—	—
24	1	153.6%	0.82	0.00	2.77	450.00	—	—	—	—	—	—
62	5	124.7%	0.15	0.05	0.51	460.00	—	—	—	—	—	—
23	5	147.0%	0.16	0.05	1.40	470.00	—	—	—	—	—	—
138	29	124.6%	0.08	0.05	0.28	480.00	211.90	215.30	185.50	172.1%	—	0

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 ARM put/call ratio?

For the October 23, 2026 expiration, the ARM put/call ratio based on open interest is 1.01 (4,952 puts vs 4,885 calls), and 0.89 based on today's volume. A ratio above 1 means more puts than calls.

What is ARM's implied volatility?

At-the-money implied volatility for ARM options expiring October 23, 2026 is about 59.1%, an annualized estimate of how much the market expects Arm stock to move.

How many ARM option expiration dates are there?

ARM has 18 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.