ENTG Options Chain Analysis

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

Spot $166.47 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.58

12k P / 21k C

Put/Call (Volume)

0.30

1k P / 4k C that session

30d ATM IV

60%

annualized implied move

Call wall

$170

2k contracts

Put wall

$105

3k contracts

Tail hedging

2.2×

deep-OTM puts vs calls

What the positioning says

●Bullish positioning: only 0.58 puts per call outstanding.
●Call wall at $170 (2k contracts), 2% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $105 (3k contracts), 37% below spot — the hedge floor; often acts as support.
●Deep-OTM put open interest is 2.2× deep-OTM call OI — an institutional hedging ladder sits under this stock.
●30-day ATM implied volatility is 60% — 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 2026-10-16. 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	6k	5k	0.73	5k
2026-11-20	5k	2k	0.48	222
2027-01-15	5k	2k	0.33	78
2027-02-19	598	629	1.05	51
2027-05-21	2	354	177.00	2
2027-12-17	1k	1k	0.86	7
2028-01-21	2k	1k	0.47	1
2028-12-15	6	8	1.33	0
2029-01-19	6	3	0.50	0

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.