Data through close

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

As of close · rank #1999 by open interest · snapshot page

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ERX's nearest-expiration max pain is 95.00 for 2026-10-16, its GEX flip is 79.75, net GEX is 394,845, its put/call open-interest ratio is 0.71. These are whole-chain derived aggregates as of Oct 2, 2026 close.

Close
104.58
prev 104.26
Gamma max
107.15
+2.5% from close
Delta neutral
94.53
-9.6% from close
Gamma neutral
79.75
-23.7% from close
Open interest
11,243
+0.0% vs prev
Contracts listed
190
113 calls · 105 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
95.00
-9.2% from close
2026-10-16
GEX flip
79.75
-23.7% from close
Net GEX
394,845
3,511,915 per 100k OI
Call wall
110.00
+5.2% from close
Put wall
110.00
+5.2% from close
Put/call OI
0.71
4,674 puts / 6,569 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
6.3
within trailing 52-week range
Front / back ATM IV
+54.2% / +49.4%
4.9 pp front premium
Expected move
+10.6%
14 DTE · one standard deviation
ATM straddle / spot
+8.2%
front-window midpoint premium
25Δ risk reversal
0.9 pp
put IV minus call IV
IV butterfly
1.1 pp
front-window smile convexity
Volume / open interest
0.01
161 contracts traded
Normalized net delta
0.195
option-holder convention
Modeled dealer delta
-0.175
opposite-side scenario
Vanna / 100k OI
213
volatility-sensitive delta
Charm / 100k OI
-1,024,495
time-decay-sensitive delta
IV surface range
72.7 pp
published contour maximum minus minimum

Download the complete dated analysis JSON .

ERX closed 2.5% below its gamma max of 107.15. It is 9.6% above the delta neutral price of 94.53. Total open interest is 11,243, +0.0% 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

← DNLI (#1998) IJH (#2000) →

Questions people ask about ERX

Where is ERX's gamma max today?

As of Oct 2, 2026, the gamma max for ERX is 107.15, +2.5% from the 104.58 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 ERX above or below its delta neutral price?

ERX closed above delta neutral: 104.58 against a delta neutral price of 94.53. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does ERX have?

11,243 contracts of open interest across 190 listed contracts on Oct 2, 2026, +0.0% 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.