GRMN Options Chain Analysis

As of previous close (2026-09-02) · OPRA historical data

Spot $275.17 at that close. Nothing on this page comes from the session in progress.

Put/Call (OI)

0.54

4k P / 7k C

Put/Call (Volume)

3.45

176 P / 51 C that session

30d ATM IV

26%

annualized implied move

Call wall

$280

912 contracts

Put wall

$260

906 contracts

Tail hedging

0.6×

deep-OTM puts vs calls

What the positioning says

●Bullish positioning: only 0.54 puts per call outstanding.
●Call wall at $280 (912 contracts), 2% above spot — the upside strike the crowd is already parked on; often acts as near-term resistance.
●Put wall at $260 (906 contracts), 6% below spot — the hedge floor; often acts as support.

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.

Open interest by expiry

Expiry	Call OI	Put OI	P/C	Volume that session
2026-09-18	795	412	0.52	44
2026-10-16	2k	2k	1.08	63
2026-12-18	3k	807	0.32	2
2027-01-15	388	499	1.29	118
2027-02-19	49	52	1.06	0
2027-04-16	11	0	0.00	0
2027-05-21	49	140	2.86	0
2027-08-20	210	34	0.16	0
2027-11-19	1k	28	0.02	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.