NDSN Options Chain Analysis

Delayed CBOE data, snapshot 2026-08-18. Spot $309.83.

Put/Call (OI)

0.53

750 P / 1k C

Put/Call (Volume)

0.09

12 P / 134 C today

30d ATM IV

25%

annualized implied move

Call wall

$330

341 contracts

Put wall

$250

280 contracts

Tail hedging

10.2×

deep-OTM puts vs calls

What the positioning says

●Bullish positioning: only 0.53 puts per call outstanding.
●Call wall at $330 (341 contracts), 7% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $250 (280 contracts), 19% below spot — the hedge floor; often acts as support.
●Deep-OTM put open interest is 10.2× 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 2026-09-18. 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 today
2026-08-21	526	75	0.14	9
2026-09-18	264	92	0.35	133
2026-12-18	591	564	0.95	0
2027-03-19	27	19	0.70	4

Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.