WDC Options Chain Analysis

As of previous close (2026-10-02) · OPRA historical data

Spot $415.95 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

1.48

260k P / 176k C

Put/Call (Volume)

0.77

90k P / 116k C that session

30d ATM IV

68%

annualized implied move

Call wall

$500

6k contracts

Put wall

$90

20k contracts

Tail hedging

1.4×

deep-OTM puts vs calls

What the positioning says

●Defensive positioning: 1.48 puts outstanding per call — holders are hedging rather than selling.
●Call wall at $500 (6k contracts), 20% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $90 (20k contracts), 78% below spot — the hedge floor; often acts as support.
●30-day ATM implied volatility is 68% — the market prices very large moves; option premium is expensive.

Open interest by strike

All expiries combined. Amber lines mark the call and put walls; the dashed line is spot.

IV term structure

At-the-money implied volatility per expiry.

Volatility smile

IV by strike — expiry 2026-10-30. A steep left side = expensive downside protection.

30-day implied volatility history

Daily ATM IV (~30 DTE bucket) collected since March 2026. Rising IV into an event = the market bracing; collapsing IV after = the crush.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-10-09	5k	9k	1.72	42k
2026-10-16	21k	26k	1.22	21k
2026-10-23	4k	5k	1.35	9k
2026-10-30	2k	3k	1.53	8k
2026-11-06	219	737	3.37	4k
2026-11-13	9	22	2.44	3k
2026-11-20	15k	16k	1.02	20k
2026-12-18	22k	24k	1.06	6k
2027-01-15	40k	74k	1.84	7k
2027-03-19	12k	16k	1.30	3k
2027-04-16	1k	5k	4.12	470
2027-06-17	8k	11k	1.42	2k
2027-09-17	1k	2k	1.93	715
2028-01-21	14k	39k	2.77	1k
2028-06-16	3k	6k	1.98	281
2028-12-15	6k	7k	1.16	906
2029-01-19	251	350	1.39	429

Source: Cboe end-of-session option chains, summarized after each US market close and published from the following trading day — OPRA historical data. Under the OPRA plan options data becomes historical, and freely publishable, at the opening of the next trading session; data from the session in progress is never displayed or served here. Open interest is exchange-reported once a day. Research, not investment advice.