ARM option chain

Strikes around the forward, as they were quoted at the close

Data as of 22 September 2026 (end of day)

2026-09-25(3 days)ATM 84.15%±25.31skew -7.02

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
58	137	$25.15	$27.30	—	$307.50	81.61%	$1.81	$1.92	61	121
235	1,712	$23.40	$24.50	—	$310.00	81.66%	$2.27	$2.34	459	1,171
354	514	$21.70	$22.65	—	$312.50	81.83%	$2.77	$2.89	32	1,345
802	552	$20.10	$20.50	—	$315.00	82.13%	$3.40	$3.50	160	359
192	1,783	$18.40	$18.70	—	$317.50	82.34%	$4.10	$4.20	301	1,451
687	988	$16.60	$17.00	—	$320.00	82.62%	$4.90	$5.00	460	673
484	203	$15.05	$15.35	—	$322.50	82.69%	$5.75	$5.90	40	1,394
1,572	2,439	$13.55	$13.85	—	$325.00	83.00%	$6.70	$6.95	18	820
1,741	91	$12.15	$12.45	—	$327.50	83.52%	$7.80	$8.10	73	385
3,778	653	$10.95	$11.10	—	$330.00	83.80%	$9.00	$9.30	38	381
736	257	$9.65	$9.85	84.09%	$332.50	—	$10.30	$10.60	503	379
1,852	1,947	$8.60	$8.85	85.01%	$335.00	—	$11.70	$12.05	161	676
368	101	$7.65	$7.90	85.78%	$337.50	—	$13.25	$13.55	31	49
1,605	724	$6.80	$6.95	86.21%	$340.00	—	$14.85	$15.15	5	282
159	134	$6.05	$6.15	86.99%	$342.50	—	$16.55	$16.85	0	337
637	1,300	$5.25	$5.45	87.29%	$345.00	—	$18.35	$18.65	2	249
302	184	$4.65	$4.80	88.05%	$347.50	—	$20.20	$20.55	19	195
3,813	1,466	$4.10	$4.20	88.64%	$350.00	—	$22.10	$22.55	36	157
1,242	—	$3.60	$3.70	89.36%	$352.50	—	$24.20	$24.55	—	229
1,115	1,210	$3.15	$3.30	90.30%	$355.00	—	$26.20	$26.55	19	36
431	—	$2.79	$2.90	91.19%	$357.50	—	$27.45	$29.50	—	91

Forward $331.80. The 25-delta put carries -7.02 volatility points over the 25-delta call.

2026-10-02(10 days)ATM 77.66%±42.72skew -5.13

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
4	15	$29.70	$32.45	—	$307.50	75.10%	$6.10	$6.75	6	100
28	213	$27.75	$30.70	—	$310.00	75.68%	$6.90	$7.65	29	36
2	60	$26.10	$28.60	—	$312.50	76.32%	$7.70	$8.70	5	5
47	860	$25.25	$27.30	—	$315.00	76.10%	$8.65	$9.40	47	103
4	24	$23.65	$25.55	—	$317.50	76.84%	$9.60	$10.60	21	221
579	1,167	$22.35	$24.00	—	$320.00	76.90%	$10.60	$11.60	38	50
58	65	$21.30	$22.55	—	$322.50	77.03%	$11.65	$12.70	13	216
168	304	$19.65	$20.85	—	$325.00	77.11%	$12.70	$13.90	6	32
152	15	$18.30	$20.10	—	$327.50	77.60%	$14.05	$15.10	0	7
455	354	$17.35	$18.35	—	$330.00	78.27%	$15.55	$16.35	13	289
189	19	$16.00	$17.75	77.41%	$332.50	—	$16.35	$17.75	1	5
301	552	$14.95	$16.60	77.65%	$335.00	—	$18.35	$19.20	2	46
43	7	$13.85	$15.60	77.85%	$337.50	—	$19.60	$20.75	0	2
631	109	$13.30	$14.10	77.91%	$340.00	—	—	—	—	—
1	—	$12.15	$13.20	77.72%	$342.50	—	$22.65	$24.20	—	0
27	63	$11.35	$12.40	78.32%	$345.00	—	$23.80	$26.80	4	0
0	—	$10.70	$11.85	79.63%	$347.50	—	$26.05	$27.85	—	0
939	1,524	$10.15	$10.55	79.18%	$350.00	—	$27.75	$29.15	5	4
6	—	$9.35	$10.35	80.56%	$352.50	—	$28.95	$31.20	—	0
123	434	$8.75	$9.20	79.88%	$355.00	—	—	—	—	—
6	—	$8.10	$8.60	80.23%	$357.50	—	$32.65	$34.90	—	0

Forward $332.32. The 25-delta put carries -5.13 volatility points over the 25-delta call.

2026-10-09(17 days)ATM 75.12%±53.89skew -4.00

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
6	1,720	$50.35	$53.30	—	$285.00	75.37%	$4.00	$5.20	8	32
0	3	$48.30	$51.15	—	$287.50	73.37%	$4.35	$5.15	3	2
9	172	$46.20	$48.60	—	$290.00	73.11%	$4.90	$5.55	13	42
—	—	—	—	—	$292.50	73.32%	$5.50	$6.15	3	23
0	204	$42.20	$44.75	—	$295.00	73.44%	$6.10	$6.80	100	7
5	167	$38.85	$41.05	—	$300.00	74.30%	$7.45	$8.50	48	70
6	42	$34.60	$37.75	—	$305.00	73.55%	$8.70	$9.95	30	25
18	417	$32.50	$34.10	—	$310.00	74.56%	$10.55	$12.00	48	8
9	83	$29.50	$31.10	—	$315.00	74.65%	$12.45	$13.95	28	2
15	93	$26.85	$28.25	—	$320.00	75.51%	$14.80	$16.25	112	4
87	173	$24.35	$25.45	—	$325.00	75.91%	$17.15	$18.70	14	17
38	94	$22.20	$23.00	—	$330.00	75.19%	$19.70	$20.70	5	23
50	55	$19.50	$21.00	75.12%	$335.00	—	$22.30	$24.10	6	22
68	82	$17.60	$18.60	75.12%	$340.00	—	$25.30	$26.75	1	0
35	21	$15.65	$16.75	75.38%	$345.00	—	—	—	—	—
176	131	$14.10	$15.05	76.03%	$350.00	—	$31.70	$34.25	9	0
33	1,979	$12.35	$13.30	75.65%	$355.00	—	—	—	—	—
176	58	$11.05	$12.05	76.47%	$360.00	—	—	—	—	—
8	7	$9.85	$10.80	76.99%	$365.00	—	$42.40	$44.35	15	0
28	108	$8.75	$9.85	77.82%	$370.00	—	—	—	—	—
1	50	$7.80	$8.80	78.31%	$375.00	—	—	—	—	—

Forward $332.40. The 25-delta put carries -4.00 volatility points over the 25-delta call.

2026-10-16(24 days)ATM 74.55%±63.59skew -5.91

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
10	0	$58.70	$61.25	—	$277.50	71.82%	$4.70	$4.85	21	46
96	1,021	$56.70	$58.30	—	$280.00	71.92%	$5.20	$5.35	344	199
10	4	$54.65	$57.25	—	$282.50	71.84%	$5.70	$5.85	3	1
13	8	$52.40	$55.00	—	$285.00	71.85%	$6.25	$6.40	18	50
0	6	$50.90	$52.90	—	$287.50	71.91%	$6.85	$7.00	10	6
88	1,258	$50.00	$50.45	—	$290.00	71.92%	$7.45	$7.65	741	59
8	42	$48.10	$48.60	—	$292.50	72.08%	$8.15	$8.35	8	38
29	21	$46.30	$46.85	—	$295.00	72.08%	$8.85	$9.05	18	64
866	3,286	$42.90	$43.30	—	$300.00	72.29%	$10.40	$10.65	1,509	313
28	96	$39.70	$40.05	—	$305.00	72.61%	$12.15	$12.45	44	97
1,359	3,605	$36.70	$37.15	—	$310.00	72.86%	$14.10	$14.35	359	34
337	157	$33.80	$34.10	—	$315.00	73.12%	$16.20	$16.45	148	334
111	1,695	$31.05	$31.45	—	$320.00	73.39%	$18.45	$18.75	222	129
80	123	$28.55	$28.90	—	$325.00	73.61%	$20.90	$21.15	93	152
776	1,332	$26.20	$26.50	—	$330.00	74.08%	$23.55	$23.85	375	195
365	51	$23.95	$24.35	74.37%	$335.00	—	$26.30	$26.65	0	19
949	1,158	$21.90	$22.25	74.61%	$340.00	—	$29.30	$29.65	359	24
1,564	3,177	$18.30	$18.60	75.33%	$350.00	—	$35.60	$36.00	79	542
331	506	$15.30	$15.55	76.24%	$360.00	—	$42.55	$42.90	167	288
182	501	$12.75	$13.00	77.15%	$370.00	—	$50.00	$50.25	52	8
140	1,403	$10.65	$10.90	78.20%	$380.00	—	$57.95	$58.35	169	17

Forward $332.67. The 25-delta put carries -5.91 volatility points over the 25-delta call.

2026-10-23(31 days)ATM 73.11%±70.89skew -4.79

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
1	21	$58.70	$61.25	—	$280.00	71.98%	$6.50	$8.20	25	6
7	115	$54.30	$57.60	—	$285.00	72.55%	$8.10	$9.40	21	5
4	117	$51.00	$54.00	—	$290.00	73.01%	$9.70	$10.85	28	5
16	68	$47.55	$50.65	—	$295.00	72.39%	$10.65	$12.60	5	9
13	87	$44.55	$47.35	—	$300.00	72.32%	$12.70	$13.85	103	120
52	89	$41.75	$44.30	—	$305.00	72.57%	$14.75	$15.60	5	5
0	43	$37.95	$40.75	—	$310.00	72.59%	$16.40	$17.90	3	4
4	26	$35.45	$38.65	—	$315.00	72.55%	$18.45	$20.05	6	1
15	102	$33.20	$35.40	—	$320.00	72.78%	$20.95	$22.25	123	3
21	60	$30.15	$32.95	—	$325.00	73.16%	$23.20	$25.10	16	14
41	47	$28.85	$30.55	—	$330.00	73.93%	$25.75	$28.25	11	5
15	7	$26.10	$28.40	73.49%	$335.00	—	$28.75	$31.40	7	0
6	16	$23.85	$26.05	73.10%	$340.00	—	—	—	—	—
11	25	$22.15	$24.55	74.18%	$345.00	—	$34.75	$37.65	2	0
103	161	$20.35	$22.35	73.88%	$350.00	—	$37.85	$40.90	2	0
6	23	$18.75	$20.85	74.44%	$355.00	—	—	—	—	—
103	113	$17.35	$19.00	74.49%	$360.00	—	$44.50	$47.85	1	0
2	15	$16.05	$18.35	76.01%	$365.00	—	—	—	—	—
28	24	$15.05	$16.45	75.96%	$370.00	—	—	—	—	—
3	32	$13.65	$15.20	75.98%	$375.00	—	$55.65	$58.15	0	1
39	50	$12.75	$14.45	77.18%	$380.00	—	$59.50	$61.90	2	0

Forward $332.71. The 25-delta put carries -4.79 volatility points over the 25-delta call.

2026-10-30(38 days)ATM 74.33%±79.78skew -5.83

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
0	28	$57.60	$59.90	—	$285.00	72.80%	$10.40	$11.60	44	7
1	16	$53.70	$56.50	—	$290.00	71.88%	$11.10	$13.35	15	6
1	8	$50.50	$53.25	—	$295.00	72.96%	$13.50	$15.00	5	6
17	38	$47.10	$50.00	—	$300.00	72.22%	$15.20	$16.35	42	49
9	87	$43.95	$46.85	—	$305.00	72.56%	$17.15	$18.50	13	19
21	54	$41.25	$44.15	—	$310.00	73.76%	$19.40	$21.30	26	3
2	27	$39.10	$41.25	—	$315.00	72.49%	$21.30	$22.80	11	16
23	172	$36.50	$39.35	—	$320.00	73.22%	$24.20	$25.15	26	19
39	21	$34.05	$36.75	—	$325.00	73.97%	$26.45	$28.45	7	34
47	41	$31.50	$34.20	—	$330.00	74.39%	$29.00	$31.45	21	22
45	64	$29.10	$31.80	74.05%	$335.00	—	—	—	—	—
13	21	$27.05	$29.55	74.01%	$340.00	—	$34.80	$37.60	1	0
29	6	$25.70	$27.70	74.98%	$345.00	—	$37.65	$40.75	1	1
30	89	$23.85	$26.75	76.16%	$350.00	—	—	—	—	—
11	26	$22.05	$24.60	75.73%	$355.00	—	—	—	—	—
5	44	$20.70	$23.60	76.95%	$360.00	—	—	—	—	—
25	21	$19.45	$21.40	76.62%	$365.00	—	—	—	—	—
29	95	$17.85	$19.95	76.53%	$370.00	—	$54.60	$57.75	0	1
5	43	$16.70	$18.45	76.71%	$375.00	—	$58.70	$61.15	5	12
37	92	$15.45	$17.55	77.30%	$380.00	—	$62.10	$64.60	0	1
1	—	$14.40	$16.45	77.70%	$385.00	—	$66.15	$69.20	—	0

Forward $332.64. The 25-delta put carries -5.83 volatility points over the 25-delta call.

2026-11-20(59 days)ATM 79.18%±106.32skew -4.97

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
1	116	$106.60	$109.75	—	$230.00	78.41%	$4.75	$5.25	1,668	42
6	956	$98.60	$100.85	—	$240.00	77.59%	$6.10	$6.85	1,842	34
19	843	$90.10	$93.50	—	$250.00	77.17%	$8.05	$8.65	1,852	62
41	898	$82.95	$86.00	—	$260.00	77.51%	$10.45	$11.20	971	129
13	1,208	$75.65	$78.50	—	$270.00	77.59%	$13.15	$14.10	760	76
10	604	$68.65	$71.50	—	$280.00	77.57%	$16.30	$17.30	482	50
10	1,168	$62.20	$65.05	—	$290.00	77.96%	$19.90	$21.25	755	47
235	2,545	$57.55	$59.40	—	$300.00	78.06%	$24.10	$25.20	473	114
65	2,071	$51.85	$53.70	—	$310.00	78.22%	$28.55	$29.80	303	84
691	21,945	$47.40	$48.55	—	$320.00	78.70%	$33.80	$34.75	310	26
567	1,083	$42.95	$44.15	—	$330.00	78.89%	$39.00	$40.25	103	88
114	1,065	$39.00	$39.85	79.23%	$340.00	—	$44.70	$46.10	154	33
144	957	$34.80	$36.05	79.12%	$350.00	—	$50.85	$53.35	347	78
86	494	$31.60	$33.45	80.45%	$360.00	—	$57.70	$59.00	35	1
89	268	$28.55	$29.55	80.10%	$370.00	—	$64.45	$66.70	16	11
56	235	$25.60	$26.90	80.47%	$380.00	—	$71.55	$73.90	80	2
10	399	$23.10	$24.80	81.30%	$390.00	—	$79.00	$80.85	30	0
1,504	839	$20.95	$21.90	81.20%	$400.00	—	$86.50	$88.65	33	0
13	235	$18.95	$19.90	81.71%	$410.00	—	$94.00	$96.50	26	0
95	393	$17.05	$18.20	82.21%	$420.00	—	$102.55	$105.60	29	0
53	107	$15.25	$16.60	82.53%	$430.00	—	$110.85	$113.40	42	10

Forward $333.95. The 25-delta put carries -4.97 volatility points over the 25-delta call.

2026-12-18(87 days)ATM 75.99%±124.24skew -4.38

Calls					Strike	Puts
Volume	Open int	Bid	Ask	IV		IV	Bid	Ask	Open int	Volume
4	812	$110.40	$113.55	—	$230.00	74.62%	$7.30	$8.25	1,126	58
7	353	$102.40	$104.95	—	$240.00	74.61%	$9.45	$10.35	1,564	87
18	2,093	$95.15	$97.00	—	$250.00	74.12%	$11.75	$12.60	1,468	406
4	839	$88.05	$90.50	—	$260.00	74.27%	$14.60	$15.50	881	31
9	2,641	$81.45	$83.50	—	$270.00	74.20%	$17.80	$18.60	395	32
3	217	$75.15	$77.65	—	$280.00	74.79%	$21.45	$22.65	818	63
12	681	$69.15	$71.80	—	$290.00	74.90%	$25.35	$26.75	796	146
57	2,178	$63.10	$65.50	—	$300.00	75.02%	$29.85	$31.00	1,116	129
60	245	$58.25	$61.30	—	$310.00	75.66%	$34.65	$36.30	529	115
19	632	$53.55	$56.70	—	$320.00	75.70%	$39.80	$41.25	364	260
66	635	$50.10	$51.80	—	$330.00	76.08%	$45.30	$46.95	816	15
245	296	$45.35	$47.50	75.60%	$340.00	—	$51.20	$53.40	139	39
82	1,468	$42.30	$43.95	76.55%	$350.00	—	$57.45	$59.45	829	12
173	293	$37.90	$40.35	75.97%	$360.00	—	$63.75	$66.35	132	8
30	477	$36.00	$37.25	77.29%	$370.00	—	$70.50	$73.25	369	6
33	159	$33.10	$34.45	77.67%	$380.00	—	$77.20	$80.50	77	85
0	570	$30.25	$32.00	78.00%	$390.00	—	$85.00	$87.55	31	5
225	789	$27.95	$29.50	78.38%	$400.00	—	$92.50	$94.40	71	0
19	174	$25.60	$26.95	78.36%	$410.00	—	$100.20	$103.05	118	0
77	1,344	$23.70	$24.50	78.46%	$420.00	—	$107.55	$110.65	39	2
8	444	$21.80	$23.10	79.17%	$430.00	—	$115.55	$118.25	26	15

Forward $334.87. The 25-delta put carries -4.38 volatility points over the 25-delta call.

How to read this

Calls on the left, puts on the right, the strike between them — the layout every chain uses. Each block is one expiration, and the heading carries its days to expiry, the at-the-money implied volatility, and the one-standard-deviation move that volatility implies over that time.

Only the 21 strikes nearest the forward are stored, which is the part of the board that carries the volume. The shaded side is in the money: below the forward for calls, above it for puts.

Implied volatility is shown on the out-of-the-money side only. An in-the-money option is nearly all intrinsic value quoted on a wide market, so a volatility solved from it would look authoritative and mean very little. The price is still shown, because the price is real; the blank is deliberate.