Data through close

GRMN max pain, gamma exposure (GEX) & options open interest

As of close · rank #2007 by open interest · snapshot page

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GRMN's nearest-expiration max pain is 260.00 for 2026-10-16, its GEX flip is 229.78, net GEX is 697,972, its put/call open-interest ratio is 0.55. These are whole-chain derived aggregates as of Oct 2, 2026 close.

Close
281.16
prev 282.47
Gamma max
301.05
+7.1% from close
Delta neutral
249.66
-11.2% from close
Gamma neutral
229.78
-18.3% from close
Open interest
11,141
+0.3% vs prev
Contracts listed
259
184 calls · 130 puts

Whole-chain analytics

Derived after the close from the same dated options chain. Signed gamma exposure uses calls positive and puts negative; it is a model convention, not observed dealer inventory.

Nearest max pain
260.00
-7.5% from close
2026-10-16
GEX flip
229.78
-18.3% from close
Net GEX
697,972
6,264,895 per 100k OI
Call wall
290.00
+3.1% from close
Put wall
260.00
-7.5% from close
Put/call OI
0.55
3,931 puts / 7,210 calls

Advanced options analysis

Complete derived analysis from the dated chain, normalized where possible for comparison across tickers. Catalyst intensity measures unusual pricing and activity; it does not identify an event, predict direction, or establish that an investment is attractive.

Catalyst intensity
–
cross-sectional score / 100
Directional score
–
IV rank
52.9
within trailing 52-week range
Front / back ATM IV
+28.3% / +40.4%
-12.2 pp front premium
Expected move
+5.5%
14 DTE · one standard deviation
ATM straddle / spot
+4.4%
front-window midpoint premium
25Δ risk reversal
-0.3 pp
put IV minus call IV
IV butterfly
-1.9 pp
front-window smile convexity
Volume / open interest
0.01
107 contracts traded
Normalized net delta
0.267
option-holder convention
Modeled dealer delta
-0.267
opposite-side scenario
Vanna / 100k OI
-188
volatility-sensitive delta
Charm / 100k OI
-2,831,649
time-decay-sensitive delta
IV surface range
72.7 pp
published contour maximum minus minimum

Download the complete dated analysis JSON .

GRMN closed 7.1% below its gamma max of 301.05. It is 11.2% above the delta neutral price of 249.66. Total open interest is 11,141, +0.3% versus the previous session. What gamma max means · What delta neutral means

History

Full history since 2020: drag to pan, scroll to zoom, hover for values. Open full-screen chart

Analysis visualizations

Derived from the 2026-10-02 options chain. Select an analysis to explore its chart.

Gamma walls

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In today's screens

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Neighbours by open interest

← CHRS (#2006) NEWP (#2008) →

Questions people ask about GRMN

Where is GRMN's gamma max today?

As of Oct 2, 2026, the gamma max for GRMN is 301.05, +7.1% from the 281.16 close. Gamma max is the underlying price at which the summed gamma of every open contract is largest; how it is computed and why it matters.

Is GRMN above or below its delta neutral price?

GRMN closed above delta neutral: 281.16 against a delta neutral price of 249.66. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does GRMN have?

11,141 contracts of open interest across 259 listed contracts on Oct 2, 2026, +0.3% versus the previous session. What open interest measures.

Levels are recomputed after every trading day from licensed end-of-day options data; only derived aggregates are published. Methodology · Data and licence · Not investment advice.