WDC · Option chain

WDC Option Chain

Every listed WDC strike within 25% of spot, across the next 6 expirations — calls and puts side by side with last price, volume and open interest, plus the closing bid and ask.

Open interest and pricing as of the close on 2026-09-03. Recomputed every morning before the open.

Spot

$441.57

Call open interest

25,885

Put open interest

43,493

Put/call (volume)

1.08

11,386 contracts changed hands across these expirations — 5,473 calls against 5,913 puts. Puts outtraded calls 1.08 to one.

Sep 11, 20266 days

call OI 3,592 · put OI 6,087

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	101.35 / 113.95	—	—	335	0.19	0.05 / 0.53	26	103
—	96.60 / 104.15	—	—	340	0.27	0.00 / 0.45	14	44
—	89.70 / 98.55	—	1	345	0.20	0.02 / 0.49	2	160
—	89.20 / 96.90	—	—	347.5	—	0.00 / 0.58	—	15
—	86.70 / 93.25	—	2	350	0.35	0.20 / 0.40	86	275
—	82.20 / 90.75	—	—	352.5	0.22	0.00 / 1.23	2	4
—	81.80 / 88.50	—	—	355	0.43	0.20 / 0.65	32	96
—	79.35 / 86.50	—	—	357.5	0.45	0.00 / 1.39	4	6
—	76.90 / 84.15	—	2	360	0.52	0.23 / 0.89	17	215
—	72.75 / 81.25	—	—	362.5	0.59	0.00 / 1.80	1	7
—	70.05 / 78.75	—	—	365	0.58	0.10 / 0.97	87	77
—	69.55 / 76.25	—	—	367.5	0.72	0.00 / 1.20	5	22
—	65.75 / 74.40	—	6	370	0.60	0.14 / 1.00	92	78
—	62.95 / 71.50	—	—	372.5	0.92	0.21 / 2.25	29	32
—	61.40 / 69.95	—	—	375	1.15	0.25 / 1.77	125	146
—	59.90 / 66.55	—	—	377.5	1.10	0.25 / 1.77	22	19
—	57.20 / 66.05	—	2	380	1.25	0.27 / 1.30	147	197
52.00	55.20 / 62.95	2	—	382.5	1.60	1.00 / 2.71	11	276
—	52.85 / 60.50	—	2	385	1.60	0.76 / 2.00	81	47
—	50.50 / 57.50	—	—	387.5	1.40	1.26 / 4.30	7	19
42.85	48.20 / 55.75	6	4	390	1.76	1.53 / 1.92	63	181
40.75	44.90 / 53.70	1	—	392.5	2.16	0.89 / 2.16	29	6
42.16	43.80 / 52.60	7	10	395	1.83	1.35 / 2.58	51	105
—	40.40 / 49.35	—	1	397.5	2.11	1.37 / 2.83	71	56
—	39.30 / 47.95	—	7	400	2.90	2.65 / 3.10	208	334
—	35.45 / 44.45	—	—	402.5	3.54	0.94 / 6.20	57	22
—	34.90 / 43.35	—	19	405	4.00	2.69 / 4.00	57	101
—	33.05 / 41.75	—	1	407.5	4.36	0.70 / 8.00	18	15
37.32	30.35 / 39.35	4	14	410	4.75	4.35 / 5.05	56	138
—	28.30 / 37.25	—	—	412.5	5.80	2.29 / 6.50	6	9
36.50	27.25 / 36.25	11	9	415	7.00	5.60 / 6.35	57	155
—	25.55 / 33.50	—	—	417.5	5.50	2.98 / 10.00	15	4
30.88	24.90 / 32.35	24	30	420	7.28	5.70 / 7.90	124	276
28.00	22.85 / 30.85	12	—	422.5	8.67	6.15 / 11.95	3	1
28.82	21.25 / 26.15	25	49	425	10.60	6.40 / 9.50	29	129
27.00	20.15 / 24.60	13	26	427.5	11.67	9.25 / 10.40	5	7
22.25	22.00 / 24.10	42	46	430	12.00	10.20 / 11.50	70	421
18.75	17.35 / 23.80	29	5	432.5	12.88	11.30 / 16.05	11	23
23.42	19.05 / 22.05	30	13	435	13.20	11.30 / 13.80	116	196
18.32	17.75 / 18.95	30	4	437.5	15.25	13.40 / 18.40	6	17
15.90	15.95 / 18.00	99	79	440	14.37	14.85 / 19.15	79	336
18.53	11.95 / 16.50	12	12	442.5	15.95	13.55 / 21.25	19	35
17.82	14.25 / 15.30	12	32	445	17.37	17.55 / 19.00	39	102
13.18	13.15 / 15.60	13	13	447.5	18.70	18.35 / 20.25	8	19
12.55	10.20 / 13.30	151	706	450	21.07	20.25 / 21.95	89	219
11.55	11.10 / 14.25	4	25	452.5	19.40	21.80 / 23.50	25	12
10.40	10.35 / 11.65	99	57	455	23.85	23.50 / 28.50	35	43
9.58	9.45 / 10.50	20	52	457.5	24.02	23.10 / 30.15	4	42
8.99	8.95 / 10.30	94	85	460	26.94	26.50 / 28.05	6	77
9.07	6.75 / 12.05	7	32	462.5	—	25.25 / 30.00	—	11
7.80	7.30 / 8.20	29	263	465	32.07	26.40 / 35.20	69	43
8.52	6.60 / 9.65	5	25	467.5	28.62	29.25 / 37.85	38	37
6.39	6.05 / 7.65	58	86	470	36.55	30.80 / 39.25	23	59
5.75	2.46 / 8.80	5	15	472.5	45.68	32.15 / 40.75	160	20
5.30	3.30 / 5.80	55	58	475	37.95	33.40 / 42.25	5	40
4.05	1.40 / 8.40	6	8	477.5	39.89	35.65 / 44.45	2	3
4.35	4.10 / 5.60	50	84	480	38.00	38.25 / 46.35	8	83
5.20	0.99 / 7.60	10	7	482.5	54.04	39.35 / 48.35	1	16
3.52	2.00 / 4.05	27	52	485	56.55	41.90 / 50.85	1	60
4.75	0.10 / 6.40	11	62	487.5	—	45.20 / 52.90	—	4
2.90	1.83 / 3.35	108	156	490	46.32	47.50 / 56.50	162	40
3.69	1.04 / 3.05	29	23	492.5	—	49.60 / 58.60	—	3
3.22	2.32 / 2.70	31	73	495	54.80	51.55 / 59.90	9	29
3.10	1.03 / 2.39	18	106	497.5	—	54.20 / 63.20	—	1
2.07	1.90 / 2.21	297	259	500	55.55	56.40 / 65.00	6	88
1.69	0.18 / 5.30	2	42	502.5	66.40	58.25 / 66.15	1	1
1.53	0.16 / 2.70	2	71	505	—	61.95 / 70.25	—	12
1.40	0.39 / 2.23	2	6	507.5	—	62.90 / 71.20	—	—
1.40	1.24 / 1.53	61	85	510	—	65.30 / 73.45	—	21
1.68	0.88 / 1.45	1	4	512.5	—	67.50 / 75.70	—	1
1.20	0.47 / 1.57	33	33	515	72.78	70.05 / 78.25	1	43
1.35	0.36 / 1.96	1	4	517.5	—	73.05 / 81.40	—	—
1.03	0.51 / 1.50	25	75	520	—	76.70 / 83.75	—	28
0.98	0.00 / 2.90	16	15	522.5	—	78.60 / 85.65	—	—
0.74	0.00 / 1.00	24	49	525	—	79.75 / 88.00	—	45
0.75	0.00 / 2.48	17	3	527.5	—	82.55 / 91.00	—	—
0.68	0.05 / 2.05	27	101	530	—	85.45 / 93.65	—	69
0.78	0.04 / 2.41	4	—	532.5	—	87.05 / 95.15	—	—
0.58	0.00 / 2.06	2	53	535	97.30	89.50 / 97.65	1	22
0.60	0.00 / 1.54	1	65	537.5	—	91.80 / 100.00	—	—
0.50	0.00 / 0.85	10	71	540	—	94.20 / 103.20	—	244
—	0.10 / 2.96	—	5	542.5	—	96.90 / 105.30	—	1
0.50	0.11 / 1.17	30	53	545	—	100.30 / 111.45	—	87
—	0.00 / 4.60	—	1	547.5	—	101.85 / 114.40	—	—
0.32	0.14 / 0.59	25	233	550	—	105.40 / 115.40	—	57
A dash means the contract did not trade — not a price of zero.

Sep 18, 202613 days

call OI 12,016 · put OI 19,561

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	96.50 / 106.45	—	128	340	0.84	0.55 / 1.40	183	325
—	87.25 / 96.90	—	228	350	1.37	1.25 / 1.50	43	1,500
89.00	78.20 / 88.15	7	136	360	1.67	1.58 / 2.28	47	932
—	71.25 / 77.90	—	69	370	2.60	2.34 / 2.68	89	783
58.00	60.20 / 69.65	2	229	380	3.65	3.30 / 3.90	37	505
55.55	52.10 / 61.50	1	121	390	4.90	4.40 / 5.35	386	817
54.25	44.65 / 54.25	55	553	400	7.15	6.70 / 7.50	298	1,234
38.00	37.20 / 46.85	14	1,080	410	9.70	9.30 / 10.10	51	1,088
30.67	34.60 / 43.50	8	9	415	12.75	10.90 / 11.85	28	41
33.50	30.65 / 37.95	14	190	420	13.32	12.65 / 13.60	63	942
30.28	31.50 / 33.10	1,012	21	425	14.64	14.45 / 18.90	11	84
32.50	28.60 / 31.75	41	246	430	15.01	16.45 / 17.85	70	597
25.20	25.55 / 26.95	69	24	435	16.99	15.75 / 23.50	2	71
24.10	23.05 / 24.45	123	452	440	21.75	21.25 / 22.70	49	1,149
24.25	22.00 / 23.30	85	6	442.5	21.10	22.50 / 24.05	6	93
21.45	20.95 / 22.10	17	36	445	23.66	21.15 / 28.00	14	84
21.68	19.70 / 24.20	16	42	447.5	22.55	25.15 / 29.40	5	22
17.45	15.15 / 20.00	39	694	450	27.21	26.75 / 28.00	105	1,718
17.80	14.20 / 21.15	11	31	452.5	—	27.15 / 29.55	—	32
16.28	16.55 / 21.20	25	39	455	27.46	25.80 / 34.50	4	20
17.05	15.65 / 19.20	9	17	457.5	28.10	27.30 / 36.40	1	12
15.21	14.75 / 16.10	39	469	460	29.87	32.70 / 37.70	11	681
11.41	10.65 / 18.55	1	21	462.5	—	34.55 / 36.10	—	12
16.50	13.15 / 14.30	26	557	465	32.52	31.60 / 37.70	1	36
15.00	12.50 / 13.60	1	44	467.5	—	38.00 / 39.50	—	21
11.96	11.65 / 12.80	108	951	470	42.18	37.95 / 41.20	20	487
12.20	7.85 / 12.15	3	32	472.5	—	36.75 / 43.20	—	32
12.60	8.35 / 14.00	7	41	475	51.50	42.95 / 49.00	2	93
12.32	7.45 / 10.80	17	51	477.5	—	41.10 / 50.85	—	853
11.10	9.15 / 11.70	26	717	480	47.02	43.90 / 52.85	7	377
8.50	8.60 / 11.10	3	24	482.5	—	45.35 / 54.75	—	1
8.39	8.10 / 10.45	12	121	485	64.70	47.30 / 56.75	2	8
7.00	7.60 / 9.85	5	65	487.5	—	48.25 / 58.25	—	30
9.35	7.15 / 8.10	86	238	490	57.98	50.45 / 59.60	10	691
8.30	6.30 / 7.20	14	28	495	58.35	55.00 / 65.00	4	9
5.80	5.60 / 6.35	215	1,471	500	59.26	61.10 / 69.25	6	857
6.37	4.85 / 6.90	40	51	505	62.88	64.25 / 74.25	14	2
4.70	4.30 / 6.05	39	273	510	67.00	69.05 / 78.95	1	306
3.45	3.30 / 3.90	41	547	520	81.60	77.25 / 85.75	8	303
3.13	1.47 / 3.10	31	447	530	86.39	86.70 / 96.70	2	982
2.55	1.98 / 2.40	13	677	540	95.60	96.45 / 105.65	3	1,471
1.80	1.51 / 2.80	50	840	550	—	106.20 / 115.20	—	260
A dash means the contract did not trade — not a price of zero.

Sep 25, 202620 days

call OI 1,751 · put OI 5,121

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	100.55 / 113.30	—	—	335	2.00	0.04 / 2.63	1	116
—	97.90 / 107.90	—	1	340	1.74	1.10 / 2.64	2	62
—	93.80 / 102.90	—	5	345	—	0.31 / 3.70	—	48
—	89.10 / 99.10	—	—	350	—	0.84 / 3.95	—	380
—	84.60 / 93.90	—	—	355	2.74	1.03 / 4.25	2	40
—	80.10 / 89.40	—	2	360	3.60	2.04 / 4.25	13	125
—	75.45 / 85.45	—	—	365	3.66	1.23 / 6.70	6	120
—	71.45 / 81.45	—	3	370	4.13	1.57 / 7.10	6	140
—	67.00 / 77.00	—	1	375	4.89	2.31 / 6.00	9	229
—	62.95 / 72.95	—	2	380	6.12	4.10 / 7.00	9	132
—	59.25 / 69.25	—	2	385	7.05	4.00 / 11.00	16	150
—	54.80 / 64.80	—	1	390	8.50	5.60 / 9.05	43	88
—	51.55 / 61.55	—	14	395	9.37	7.40 / 11.25	30	66
—	47.80 / 56.80	—	8	400	9.45	8.90 / 11.80	7	215
—	44.65 / 53.70	—	11	405	10.65	8.90 / 16.10	8	98
—	41.10 / 50.75	—	11	410	15.00	9.50 / 17.70	5	141
—	38.75 / 47.20	—	5	415	15.57	12.20 / 16.50	2	142
—	35.10 / 44.55	—	64	420	17.37	13.25 / 21.40	17	698
—	32.30 / 41.70	—	9	425	17.54	15.35 / 23.50	4	124
35.01	29.95 / 39.10	8	12	430	24.30	17.60 / 25.55	3	328
34.04	26.00 / 35.60	3	9	435	26.45	21.10 / 27.10	3	221
28.05	24.60 / 32.55	7	17	440	29.40	22.45 / 30.45	6	159
29.05	23.35 / 29.70	10	30	445	31.37	27.60 / 32.45	4	155
27.45	22.00 / 28.10	17	108	450	29.95	27.35 / 36.10	11	167
21.65	17.95 / 26.05	10	10	455	—	30.60 / 40.55	—	91
22.80	17.50 / 24.15	68	35	460	38.00	32.45 / 41.15	12	47
20.30	15.50 / 19.85	10	114	465	39.25	37.50 / 46.85	7	29
—	13.90 / 20.05	—	95	470	—	39.50 / 47.00	—	129
15.50	13.30 / 18.45	34	78	475	49.84	42.55 / 52.55	5	38
15.63	10.80 / 17.05	6	56	480	—	46.85 / 56.45	—	132
14.25	9.75 / 15.70	4	29	485	51.32	50.60 / 60.55	2	187
11.85	8.30 / 15.30	2	45	490	—	54.45 / 64.05	—	152
11.05	9.50 / 13.90	1	33	495	—	60.20 / 68.55	—	30
8.65	7.00 / 11.40	56	147	500	65.80	62.20 / 72.15	2	26
9.83	6.00 / 10.35	22	22	505	—	66.75 / 76.75	—	5
8.74	4.95 / 9.00	25	54	510	—	71.40 / 81.00	—	17
8.05	4.10 / 9.90	11	53	515	75.10	75.40 / 85.35	1	9
6.30	2.97 / 10.35	4	71	520	—	79.75 / 89.75	—	19
6.92	2.91 / 7.25	27	195	525	—	84.30 / 94.30	—	5
5.15	1.74 / 8.60	3	102	530	—	88.65 / 98.65	—	12
4.05	2.67 / 7.05	5	46	535	93.30	93.50 / 102.50	1	30
4.18	1.85 / 7.40	1	85	540	—	98.10 / 106.55	—	9
3.39	0.65 / 6.75	5	27	545	—	100.55 / 114.90	—	3
4.01	2.00 / 5.60	24	139	550	—	106.65 / 116.60	—	7
A dash means the contract did not trade — not a price of zero.

Oct 02, 202627 days

call OI 2,597 · put OI 2,273

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	104.35 / 115.25	—	2	335	2.00	0.92 / 3.25	6	28
—	100.00 / 109.05	—	14	340	2.55	0.87 / 4.85	5	60
—	95.65 / 105.65	—	2	345	3.40	2.33 / 4.40	5	52
—	90.20 / 99.55	—	3	350	4.10	3.15 / 5.20	331	84
—	86.90 / 95.90	—	11	355	4.25	3.25 / 5.80	3	55
—	81.80 / 91.80	—	11	360	4.45	4.25 / 6.05	5	77
—	78.00 / 88.00	—	5	365	5.00	4.25 / 8.00	5	43
—	74.80 / 83.80	—	5	370	7.50	4.45 / 9.75	2	26
—	69.95 / 78.90	—	4	375	8.64	4.10 / 10.50	3	89
—	66.55 / 75.55	—	4	380	9.00	7.25 / 11.55	13	53
—	61.15 / 71.15	—	3	385	8.15	7.15 / 10.85	7	97
—	59.05 / 68.05	—	752	390	10.35	6.90 / 14.10	8	65
50.00	55.05 / 64.70	1	750	395	14.20	8.25 / 14.95	2	38
—	52.90 / 61.15	—	4	400	14.30	9.80 / 15.50	27	262
—	49.05 / 58.25	—	4	405	15.50	12.45 / 16.65	8	71
—	45.50 / 55.05	—	9	410	16.50	13.25 / 18.70	4	106
44.05	42.45 / 52.05	1	6	415	18.00	15.15 / 20.65	4	55
—	39.60 / 48.75	—	19	420	21.95	17.20 / 25.25	6	79
38.35	35.80 / 44.75	76	14	425	22.90	19.60 / 27.40	4	48
35.00	33.35 / 43.35	5	9	430	23.32	23.00 / 29.65	26	85
36.45	33.70 / 37.40	23	4	435	26.15	24.10 / 31.55	21	25
36.28	28.50 / 37.45	42	24	440	32.55	28.10 / 36.55	11	38
31.00	27.10 / 33.30	5	100	445	32.80	30.45 / 37.80	9	24
27.45	25.95 / 32.60	8	35	450	34.10	32.65 / 38.90	9	47
28.33	23.90 / 29.95	2	62	455	36.60	36.40 / 44.20	3	37
28.20	20.40 / 28.60	2	14	460	—	38.00 / 47.65	—	99
24.00	20.10 / 24.90	3	15	465	—	43.05 / 49.70	—	22
19.00	18.40 / 24.50	2	36	470	60.58	44.05 / 54.05	3	58
21.80	15.65 / 22.45	1	48	475	49.82	47.30 / 57.25	4	103
20.50	17.15 / 21.25	5	23	480	—	50.65 / 59.25	—	38
18.60	15.80 / 20.55	5	31	485	—	54.25 / 63.05	—	12
17.87	12.60 / 19.15	6	13	490	—	57.95 / 67.80	—	53
16.52	13.20 / 15.60	2	25	495	—	63.00 / 71.85	—	51
16.00	11.85 / 14.85	21	41	500	—	65.70 / 74.70	—	20
—	7.70 / 15.90	—	67	505	—	70.55 / 78.70	—	7
6.93	8.25 / 12.65	2	96	510	—	73.65 / 83.30	—	28
11.00	6.40 / 14.15	2	29	515	—	78.20 / 88.20	—	12
8.50	6.20 / 13.30	45	43	520	99.75	82.25 / 92.20	1	10
—	7.60 / 12.00	—	88	525	—	86.20 / 96.10	—	—
7.28	3.85 / 9.50	6	53	530	91.14	91.50 / 100.50	2	10
6.36	5.75 / 10.25	1	20	535	—	95.45 / 103.95	—	2
5.85	3.90 / 9.60	3	28	540	—	99.55 / 109.50	—	49
—	4.25 / 9.55	—	47	545	—	103.95 / 114.70	—	10
6.26	2.91 / 8.55	5	24	550	—	108.40 / 118.70	—	45
A dash means the contract did not trade — not a price of zero.

Oct 09, 202634 days

call OI 411 · put OI 833

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	105.60 / 116.55	—	—	335	3.34	2.15 / 4.75	3	6
—	101.00 / 114.00	—	—	340	3.69	2.36 / 4.25	3	23
—	97.05 / 105.25	—	—	345	4.24	3.25 / 5.65	3	1
—	92.70 / 102.35	—	—	350	5.30	4.05 / 6.00	36	183
—	88.40 / 98.40	—	—	355	5.49	3.45 / 7.40	23	13
—	84.05 / 94.05	—	10	360	6.95	3.25 / 7.75	9	7
—	79.95 / 89.95	—	1	365	7.03	5.85 / 9.60	2	—
83.60	77.60 / 86.55	2	—	370	8.65	6.55 / 9.80	3	6
—	72.65 / 82.65	—	1	375	9.40	7.65 / 11.30	9	8
—	68.45 / 77.50	—	2	380	9.90	8.95 / 12.40	7	120
—	64.80 / 74.75	—	—	385	12.82	9.60 / 14.60	7	12
—	61.70 / 71.70	—	1	390	12.95	12.65 / 15.25	15	5
—	58.15 / 67.90	—	—	395	15.40	12.55 / 18.45	2	9
50.92	54.90 / 64.90	10	—	400	17.00	13.90 / 21.05	7	13
—	52.45 / 61.50	—	—	405	17.99	15.95 / 21.90	3	16
—	49.85 / 58.35	—	1	410	20.64	16.55 / 22.70	3	27
—	47.05 / 55.90	—	1	415	22.44	19.80 / 25.85	5	113
47.45	42.90 / 52.90	2	2	420	28.68	21.85 / 28.00	2	5
37.00	40.35 / 50.05	1	1	425	—	24.10 / 30.30	—	20
42.01	39.05 / 47.95	22	1	430	26.84	25.20 / 33.35	27	23
35.72	35.25 / 45.25	1	—	435	37.40	26.60 / 36.25	1	16
36.43	32.15 / 40.50	20	1	440	32.00	29.45 / 39.05	6	12
34.75	31.05 / 37.90	17	11	445	41.40	32.25 / 42.25	1	2
35.88	28.95 / 38.65	21	11	450	39.00	35.15 / 45.10	2	5
30.55	28.45 / 35.45	3	5	455	43.08	37.45 / 45.20	2	1
26.22	25.70 / 30.45	4	1	460	42.82	40.45 / 49.20	4	32
—	22.80 / 30.80	—	10	465	—	43.35 / 53.10	—	2
—	22.10 / 28.65	—	1	470	—	46.80 / 56.20	—	—
25.04	19.40 / 27.40	2	1	475	—	50.30 / 60.10	—	6
—	18.45 / 25.35	—	1	480	—	53.95 / 63.60	—	11
20.45	17.40 / 23.85	4	1	485	—	57.75 / 65.55	—	—
20.00	14.95 / 22.95	2	21	490	—	61.20 / 71.05	—	114
17.88	13.65 / 21.65	22	—	495	—	64.85 / 74.40	—	—
16.73	13.50 / 19.80	7	150	500	80.00	69.55 / 78.55	20	2
—	11.25 / 19.30	—	1	505	—	73.50 / 82.50	—	8
14.12	10.75 / 16.65	22	5	510	—	77.20 / 86.20	—	—
14.89	9.15 / 16.75	2	2	515	92.74	81.05 / 90.95	1	4
13.29	10.50 / 13.80	1	4	520	101.75	85.05 / 94.95	1	—
—	9.85 / 14.50	—	1	525	102.14	88.55 / 98.30	3	—
—	7.65 / 13.70	—	6	530	—	93.05 / 102.00	—	6
9.41	5.05 / 12.60	4	2	540	—	100.65 / 114.35	—	2
8.92	4.55 / 12.45	2	32	545	—	105.65 / 116.20	—	—
7.84	3.70 / 10.05	16	123	550	—	110.05 / 120.55	—	—
A dash means the contract did not trade — not a price of zero.

Oct 16, 202641 days

call OI 5,518 · put OI 9,618

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	102.80 / 113.25	—	59	340	5.50	5.20 / 5.85	25	433
104.75	94.65 / 104.55	1	61	350	7.10	6.55 / 7.40	142	627
—	86.85 / 96.25	—	305	360	8.70	8.30 / 8.95	144	923
—	78.95 / 88.70	—	106	370	11.26	10.45 / 11.35	57	426
81.47	71.90 / 81.90	1	48	380	13.60	12.85 / 13.90	51	886
56.00	64.85 / 74.75	1	65	390	16.45	15.90 / 16.95	26	383
—	59.75 / 67.45	—	101	400	19.69	19.15 / 20.25	97	486
61.03	55.95 / 57.60	2	576	410	26.07	22.85 / 27.10	1	260
54.50	46.95 / 55.95	14	216	420	26.14	27.05 / 29.85	9	927
49.90	40.55 / 50.30	27	379	430	31.53	31.95 / 33.15	53	597
41.00	35.60 / 41.95	99	241	440	37.70	36.90 / 38.50	16	659
37.00	35.90 / 37.40	88	296	450	44.00	42.35 / 46.70	56	349
34.81	28.00 / 36.50	3	264	460	45.70	44.35 / 53.85	7	840
28.05	25.65 / 32.80	11	236	470	55.57	54.60 / 60.50	5	277
28.16	22.40 / 29.35	53	166	480	59.34	61.30 / 67.50	18	318
23.20	19.35 / 25.35	15	151	490	64.70	66.85 / 74.55	1	146
19.15	19.00 / 22.80	126	295	500	—	74.20 / 81.70	—	340
19.39	14.35 / 18.35	17	207	510	—	80.20 / 89.10	—	108
14.40	12.55 / 19.05	22	443	520	91.00	87.05 / 96.70	5	137
13.65	13.65 / 16.20	38	420	530	—	95.35 / 104.30	—	310
11.10	10.00 / 15.55	8	255	540	—	103.60 / 116.05	—	97
9.80	8.65 / 11.05	29	628	550	—	112.50 / 121.85	—	89
A dash means the contract did not trade — not a price of zero.

How to read this chain

Calls sit on the left, puts on the right, and every row is one strike. The highlighted row is the strike closest to spot. Open interest is the number of contracts still outstanding at that strike — positions that exist right now. Volume is how many traded on the session shown. Open interest builds slowly and marks where positioning has accumulated; volume spikes and marks where attention went today.

Strikes with no open interest and no trades on either side are omitted, and the ladder is trimmed to within 25% of spot — the far wings are almost entirely empty and say nothing about positioning.

More on WDC

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Educational, not investment advice. Options involve risk. Open interest is reported with a one-session lag by OCC, so these levels describe positioning as of the last settled session, not live intraday flow.