Western Digital (WDC) Options Chain

NASDAQ: WDCTechnologyElectronic ComponentsUSD

397.28+3.97 (+1.01%)

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

Expiration date

Expiration: Oct 30, 2026
Days to expiration: 19
Share price: $397.28
Put/call ratio (OI): 1.06
Put/call ratio (volume): 0.26
ATM implied volatility: 64.0%
Expected move: ±$58.05
Open interest (C / P): 7.17K / 7.62K

WDC options summary

The WDC options chain for the October 30, 2026 expiration lists 70 call and 56 put contracts, with 19 days until expiration. Open interest stands at 7,172 calls and 7,618 puts, a put/call ratio of 1.06, which is fairly balanced between calls and puts. At-the-money implied volatility near the $395.00 strike is 64.0%, which implies the market expects a move of about ±$58.05 (14.6%) in Western Digital stock by expiration.

The most open interest sits at the $450.00 call (887 contracts) and the $400.00 put (648 contracts).

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

WDC options chain · October 30, 2026

WDC 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
—	—	—	—	—	—	250.00	0.10	4.35	0.37	125.2%	5	33
—	—	—	—	—	—	260.00	0.00	4.40	0.50	115.9%	4	63
—	—	—	—	—	—	270.00	0.00	4.50	0.32	107.8%	2	28
—	—	—	—	—	—	280.00	0.00	0.80	0.42	72.4%	1	25
1	—	74.7%	174.70	102.80	113.45	290.00	0.00	1.49	0.79	73.0%	1	52
14	2	63.3%	106.75	92.90	102.80	300.00	0.22	1.50	1.01	68.1%	6	141
—	—	—	—	—	—	310.00	0.90	3.20	1.40	73.8%	1	142
1	1	60.8%	95.00	74.40	83.00	320.00	0.25	2.88	2.88	62.2%	14	159
1	1	62.5%	113.08	65.65	74.05	330.00	1.50	3.35	3.35	61.5%	17	258
5	3	62.0%	80.00	61.15	69.65	335.00	1.77	4.60	4.50	62.4%	2	94
—	—	—	—	—	—	340.00	3.20	5.80	4.43	65.3%	21	197
—	—	—	—	—	—	345.00	4.60	6.10	5.05	64.9%	11	335
17	41	61.2%	59.85	48.45	57.15	350.00	5.30	7.35	5.96	64.6%	50	613
—	—	—	—	—	—	355.00	5.50	9.85	7.67	65.2%	5	164
—	—	—	—	—	—	360.00	7.20	10.00	8.94	63.7%	93	508
10	5	63.2%	57.45	37.70	46.70	365.00	8.95	12.40	10.37	65.7%	24	146
26	16	63.1%	46.72	34.25	43.35	370.00	9.15	14.05	12.05	63.4%	26	383
7	7	62.9%	35.00	30.65	40.40	375.00	12.15	15.05	13.95	64.0%	28	297
113	517	62.5%	31.90	27.70	37.00	380.00	13.30	16.20	15.30	61.6%	54	494
36	3	64.2%	29.90	27.35	32.80	385.00	15.85	20.05	17.30	64.6%	22	248
74	37	62.6%	27.90	24.70	28.95	390.00	16.90	21.65	21.00	61.9%	39	520
57	529	64.4%	24.40	22.50	27.40	395.00	20.25	24.60	24.54	63.7%	13	244
WDC $397.28
221	33	64.1%	22.25	20.65	24.35	400.00	23.00	27.10	25.15	63.6%	15	648
96	28	65.2%	20.85	18.05	23.40	405.00	25.85	30.65	28.68	64.7%	10	244
165	33	64.6%	18.00	17.30	19.70	410.00	28.90	35.65	31.50	67.5%	16	270
219	22	64.3%	16.60	15.05	18.00	415.00	30.40	39.15	33.90	65.8%	6	98
341	34	62.7%	15.00	12.95	15.50	420.00	35.25	42.00	38.15	67.4%	9	174
132	30	66.5%	13.00	13.00	15.00	425.00	36.90	45.85	42.57	65.5%	5	118
288	14	63.3%	11.45	9.55	13.40	430.00	40.40	48.55	45.80	64.2%	8	240
41	8	64.7%	9.35	8.30	12.95	435.00	45.00	53.10	52.00	66.9%	11	64
132	26	65.4%	9.90	7.30	12.00	440.00	48.55	57.25	52.82	67.1%	1	123
282	122	65.5%	8.85	7.20	10.00	445.00	52.05	60.15	59.90	64.8%	1	82
887	75	66.5%	7.90	7.10	8.70	450.00	56.85	63.60	63.67	65.2%	4	131
242	116	67.5%	6.50	5.85	8.65	455.00	60.70	69.60	60.00	68.1%	2	38
214	42	69.7%	6.02	3.65	10.35	460.00	65.70	73.40	70.40	69.0%	15	47
57	3	67.0%	5.65	4.15	7.00	465.00	69.45	78.25	72.17	69.3%	3	5
151	3	69.3%	4.31	3.00	7.85	470.00	73.75	82.65	79.40	69.5%	1	25
58	3	69.6%	5.02	4.10	5.65	475.00	78.60	87.15	78.83	70.8%	15	24
130	17	70.3%	4.00	3.90	5.00	480.00	83.30	92.25	89.51	73.1%	1	11
87	2	73.8%	3.70	3.00	6.30	485.00	87.85	96.35	83.97	72.5%	2	6
171	5	75.1%	3.05	2.96	5.85	490.00	92.50	100.70	89.10	72.5%	3	5
67	20	73.0%	4.45	0.44	6.65	495.00	96.90	105.65	103.50	73.1%	3	28
735	161	70.5%	2.70	2.50	2.95	500.00	100.85	109.85	99.00	69.9%	5	42
61	34	75.9%	3.04	0.05	6.45	505.00	104.75	117.70	72.80	77.5%	1	5
92	2	69.3%	2.64	1.27	2.63	510.00	109.35	120.30	76.59	70.5%	1	4
45	2	83.9%	3.01	1.35	6.35	515.00	114.25	126.70	79.15	77.2%	—	1
229	11	83.3%	2.22	0.60	6.15	520.00	119.20	131.55	126.10	78.6%	1	24
26	4	78.0%	2.35	1.08	3.50	525.00	—	—	—	—	—	—
33	2	80.8%	2.23	0.00	4.80	530.00	128.95	139.35	100.00	72.6%	2	3
14	2	83.0%	1.26	1.06	3.80	535.00	133.70	144.25	121.88	72.6%	1	0
43	10	89.6%	3.24	0.52	5.65	540.00	138.60	151.65	132.96	84.8%	2	2
12	2	89.6%	6.88	0.01	5.60	545.00	—	—	—	—	—	—
176	1	83.4%	0.95	0.01	3.60	550.00	148.45	159.00	95.00	74.8%	—	2
41	2	92.5%	1.00	0.01	5.35	555.00	—	—	—	—	—	—
44	4	94.3%	1.50	0.01	5.35	560.00	158.30	168.95	165.14	76.8%	1	2
26	4	94.3%	3.76	0.00	4.90	565.00	—	—	—	—	—	—
45	1	96.1%	1.34	0.00	4.90	570.00	167.35	181.25	179.92	88.1%	1	7
51	1	99.1%	0.01	0.10	5.10	575.00	174.40	185.55	161.13	96.2%	3	0
97	1	100.6%	2.20	0.05	5.10	580.00	178.15	189.25	189.72	84.1%	1	1
31	4	102.0%	2.66	0.01	5.05	585.00	—	—	—	—	—	—
80	8	103.0%	0.58	0.00	4.90	590.00	—	—	—	—	—	—
94	23	78.3%	0.67	0.00	0.86	595.00	—	—	—	—	—	—
347	20	88.3%	0.87	0.03	1.70	600.00	—	—	—	—	—	—
117	15	98.4%	0.60	0.00	3.00	605.00	—	—	—	—	—	—
25	15	109.3%	0.77	0.00	4.85	610.00	—	—	—	—	—	—
11	6	110.6%	2.00	0.00	4.80	615.00	—	—	—	—	—	—
19	10	112.2%	3.80	0.00	4.80	620.00	—	—	—	—	—	—
7	2	113.5%	1.23	0.00	4.75	625.00	—	—	—	—	—	—
13	1	115.0%	1.62	0.00	4.75	630.00	—	—	—	—	—	—
3	2	116.3%	1.03	0.00	4.70	635.00	—	—	—	—	—	—
20	9	117.8%	0.58	0.00	4.70	640.00	—	—	—	—	—	—
16	1	119.0%	1.96	0.00	4.65	645.00	—	—	—	—	—	—
56	4	111.4%	1.27	0.00	3.00	650.00	247.95	257.95	225.00	85.6%	—	0
14	4	121.9%	1.11	0.00	4.65	655.00	—	—	—	—	—	—
8	6	123.1%	2.73	0.00	4.60	660.00	—	—	—	—	—	—
58	19	125.9%	1.66	0.00	4.60	670.00	—	—	—	—	—	—
10	5	86.2%	0.24	0.00	0.25	680.00	—	—	—	—	—	—
14	1	131.1%	2.30	0.00	4.55	690.00	—	—	—	—	—	—
116	32	101.7%	0.26	0.03	0.69	700.00	—	—	—	—	—	—

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 WDC put/call ratio?

For the October 30, 2026 expiration, the WDC put/call ratio based on open interest is 1.06 (7,618 puts vs 7,172 calls), and 0.26 based on today's volume. A ratio above 1 means more puts than calls.

What is WDC's implied volatility?

At-the-money implied volatility for WDC options expiring October 30, 2026 is about 64.0%, an annualized estimate of how much the market expects Western Digital stock to move.

How many WDC option expiration dates are there?

WDC has 16 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.