ILMN Options Chain Analysis

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

Spot $273.04 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.63

9k P / 14k C

Put/Call (Volume)

1.17

430 P / 368 C that session

30d ATM IV

53%

annualized implied move

Call wall

$300

747 contracts

Put wall

$260

960 contracts

Tail hedging

6.8×

deep-OTM puts vs calls

What the positioning says

●Bullish positioning: only 0.63 puts per call outstanding.
●Call wall at $300 (747 contracts), 10% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $260 (960 contracts), 5% below spot — the hedge floor; often acts as support.
●Deep-OTM put open interest is 6.8× deep-OTM call OI — an institutional hedging ladder sits under this stock.

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 2026-10-16. 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
2026-10-16	2k	3k	1.32	223
2026-11-20	777	1k	1.50	292
2026-12-18	3k	1k	0.41	28
2027-01-15	6k	2k	0.40	160
2027-03-19	330	243	0.74	16
2027-06-17	802	215	0.27	52
2028-01-21	1k	436	0.39	27

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.