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: Jan 21, 2028
Days to expiration: 468
Share price: $266.28
Put/call ratio (OI): 1.13
Put/call ratio (volume): 0.60
ATM implied volatility: 64.2%
Expected move: ±$193.70
Open interest (C / P): 21.52K / 24.38K

ARM options summary

The ARM options chain for the January 21, 2028 expiration lists 78 call and 77 put contracts, with 468 days until expiration. Open interest stands at 21,517 calls and 24,379 puts, a put/call ratio of 1.13, which is fairly balanced between calls and puts. At-the-money implied volatility near the $270.00 strike is 64.2%, which implies the market expects a move of about ±$193.70 (72.7%) in Arm stock by expiration.

The most open interest sits at the $400.00 call (2.27K contracts) and the $65.00 put (2.25K contracts).

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

ARM options chain · January 21, 2028

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
25	2	—	208.00	188.00	192.00	55.00	0.05	1.38	0.60	68.9%	1	68
144	2	101.5%	282.50	210.00	214.50	60.00	0.45	1.83	0.87	70.4%	1	115
0	19	—	341.90	0.00	0.00	65.00	0.49	1.66	0.95	66.0%	10	2,253
0	1	—	183.90	0.00	0.00	70.00	0.33	2.20	1.40	64.5%	10	177
11	2	93.5%	188.55	197.00	201.00	75.00	1.31	2.20	1.53	65.2%	3	590
54	2	90.7%	184.49	192.50	196.50	80.00	1.70	2.42	2.25	64.1%	2	390
0	1	—	204.90	0.00	0.00	85.00	2.07	2.95	2.75	63.7%	49	116
13	1	87.1%	164.50	184.00	188.00	90.00	2.50	3.50	3.25	63.2%	1	408
26	2	86.0%	201.69	180.00	184.00	95.00	2.61	6.00	3.45	65.8%	2	152
13	2	—	265.85	154.50	158.50	97.50	3.50	4.45	5.15	63.0%	2	180
882	4	84.2%	178.00	175.50	180.00	100.00	3.75	4.80	4.45	62.7%	1	1,275
31	2	83.5%	154.50	172.00	176.00	105.00	4.40	5.55	4.55	62.4%	5	224
114	1	82.3%	184.70	168.00	172.00	110.00	4.40	8.00	6.65	63.4%	5	250
514	1	81.5%	170.00	164.00	168.50	115.00	6.00	7.80	6.88	62.6%	2	425
189	2	80.6%	133.65	160.50	164.50	120.00	6.55	8.90	7.45	62.0%	2	921
119	1	79.7%	144.54	156.50	161.00	125.00	8.05	10.05	8.77	62.4%	11	93
90	1	79.2%	187.53	153.00	157.50	130.00	8.15	11.25	10.02	61.2%	2	194
59	1	78.6%	215.35	149.50	154.00	135.00	9.60	12.75	9.50	61.6%	3	124
99	1	77.5%	152.31	146.00	150.00	140.00	10.40	14.40	12.49	61.3%	8	227
80	2	77.1%	139.83	142.50	147.00	145.00	12.35	14.95	12.50	61.0%	1	584
254	1	76.5%	141.72	139.15	143.50	150.00	14.05	15.95	13.10	60.7%	37	1,732
163	1	75.7%	138.52	136.00	139.85	155.00	15.30	18.10	16.54	60.8%	1	22
242	8	75.5%	137.83	132.70	137.00	160.00	16.75	18.75	16.10	59.9%	4	230
91	8	75.2%	134.82	129.70	134.00	165.00	18.25	20.00	18.50	59.3%	10	77
467	1	74.7%	129.25	126.50	131.00	170.00	19.55	22.70	21.10	59.6%	1	86
201	1	74.0%	126.36	123.50	127.55	175.00	21.90	23.90	24.07	59.4%	2	23
483	1	74.1%	129.00	121.00	125.00	180.00	23.70	26.30	23.35	59.6%	17	559
109	1	73.6%	104.93	118.00	122.00	185.00	25.85	27.50	26.70	59.1%	4	97
167	131	73.6%	122.75	115.50	119.50	190.00	27.60	30.20	26.30	59.2%	35	615
53	1	73.2%	92.55	112.50	116.95	195.00	28.50	32.55	31.30	58.6%	34	259
411	2	72.8%	113.20	110.25	113.60	200.00	31.65	34.95	33.81	59.1%	1	1,544
288	2	73.6%	128.67	106.70	109.40	210.00	36.30	38.65	37.97	58.5%	2	111
158	3	72.4%	135.50	100.50	104.50	220.00	41.00	43.50	42.80	58.2%	4	397
263	1	72.0%	142.15	96.00	99.90	230.00	45.70	48.30	47.68	57.7%	80	388
210	9	71.6%	125.38	91.50	95.55	240.00	51.45	54.25	52.35	58.0%	5	1,550
953	5	71.4%	89.20	87.70	91.30	250.00	57.20	59.95	58.88	57.9%	30	689
1,609	1	71.1%	87.00	83.55	87.60	260.00	62.65	65.45	64.00	57.4%	22	1,475
ARM $266.28
66	1	70.9%	81.58	80.00	83.80	270.00	68.95	71.90	70.25	57.6%	34	269
246	25	71.0%	79.75	76.60	80.80	280.00	74.15	78.15	76.81	56.9%	21	530
210	1	70.6%	87.50	73.50	76.75	290.00	81.20	85.00	72.70	57.2%	1	1,180
408	14	71.0%	72.00	70.50	74.55	300.00	87.50	91.00	85.50	56.6%	1	284
126	24	70.8%	71.20	67.85	71.05	310.00	94.75	97.60	95.90	56.5%	2	158
67	3	70.6%	66.72	65.00	68.05	320.00	101.35	103.50	103.25	55.7%	14	97
220	2	70.6%	65.60	62.20	65.70	330.00	109.15	111.70	106.70	56.3%	55	337
83	5	70.6%	73.18	60.15	62.90	340.00	115.55	119.50	107.60	55.9%	7	54
782	17	70.5%	64.95	57.60	60.60	350.00	122.90	126.80	119.47	55.6%	15	204
131	5	70.7%	61.78	55.65	58.40	360.00	130.05	134.50	116.35	55.3%	25	107
191	20	70.5%	59.50	52.95	56.30	370.00	137.50	142.45	125.95	55.1%	863	864
111	5	70.3%	64.29	50.50	54.30	380.00	145.55	150.00	137.70	54.9%	36	133
81	2	70.0%	78.95	48.50	51.65	390.00	153.50	158.00	142.80	54.7%	57	58
2,265	6	70.8%	48.66	47.30	51.00	400.00	161.50	166.00	148.11	54.5%	2	150
107	1	71.0%	48.67	45.95	49.45	410.00	169.50	174.00	155.60	54.2%	7	31
120	1	70.5%	68.00	43.50	47.25	420.00	194.50	198.00	226.74	68.2%	1	2
84	1	70.6%	47.12	42.00	45.70	430.00	0.00	0.00	197.30	—	10	0
54	20	70.7%	63.30	40.80	44.10	440.00	194.50	199.00	177.22	53.5%	1	25
189	140	70.8%	42.75	38.80	43.25	450.00	203.00	207.50	203.00	53.2%	1	55
82	50	70.6%	56.60	37.50	41.35	460.00	211.50	216.00	211.30	52.9%	1	30
147	1	70.8%	37.45	36.85	39.60	470.00	220.00	224.50	245.30	52.5%	2	6
245	2	70.8%	55.55	35.00	38.90	480.00	259.00	263.50	230.90	80.0%	15	16
752	761	70.8%	64.70	33.50	37.90	490.00	237.50	242.00	217.16	51.9%	1	3
893	6	71.1%	39.00	33.35	36.25	500.00	246.50	250.50	232.50	51.5%	1	282
134	2	71.3%	34.45	31.95	35.75	510.00	0.00	0.00	234.00	—	—	0
87	80	71.2%	55.15	31.00	34.40	520.00	264.50	268.25	257.25	50.9%	34	278
254	1	71.2%	39.50	30.40	32.85	530.00	273.50	278.00	265.85	51.0%	16	136
61	1	71.8%	30.80	30.30	32.05	540.00	300.00	304.00	333.50	69.1%	—	1
186	124	71.3%	52.00	28.60	30.85	550.00	291.50	296.00	275.15	50.1%	2	2
280	3	71.1%	30.00	26.75	30.35	560.00	—	—	—	—	—	—
124	120	71.0%	48.75	25.85	29.20	570.00	0.00	0.00	317.30	—	—	0
34	1	71.5%	56.00	25.75	28.55	580.00	319.50	323.05	300.10	51.5%	2	4
85	9	71.7%	25.75	25.50	27.55	590.00	329.00	332.50	300.93	51.4%	2	87
471	102	71.7%	28.40	24.20	27.30	600.00	338.00	342.05	311.10	51.4%	1	5
195	2	71.9%	25.65	23.70	26.55	610.00	347.50	351.50	324.20	51.3%	1	4
83	4	72.0%	25.00	23.00	26.00	620.00	387.50	391.00	391.98	82.6%	2	2
305	5	71.8%	24.25	22.35	24.70	630.00	366.50	371.00	403.00	51.8%	2	6
312	13	72.0%	23.65	21.50	24.50	640.00	0.00	0.00	377.61	—	2	0
316	136	71.8%	23.15	20.65	23.75	650.00	385.50	389.90	415.10	51.1%	8	11
254	162	72.0%	22.50	20.20	23.25	660.00	395.50	399.50	368.80	51.0%	26	38
2,091	703	71.3%	22.60	19.15	21.80	670.00	405.00	409.00	379.80	50.6%	1	310

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 January 21, 2028 expiration, the ARM put/call ratio based on open interest is 1.13 (24,379 puts vs 21,517 calls), and 0.60 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 January 21, 2028 is about 64.2%, 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.