Data through close

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

As of close · rank #951 by open interest · snapshot page

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ACMR's nearest-expiration max pain is 76.00 for 2026-10-09, its GEX flip is 63.86, net GEX is 5,059,649, its put/call open-interest ratio is 0.41. These are whole-chain derived aggregates as of Oct 2, 2026 close.

Close
83.38
prev 83.58
Gamma max
86.62
+3.9% from close
Delta neutral
68.46
-17.9% from close
Gamma neutral
63.86
-23.4% from close
Open interest
54,242
-5.7% vs prev
Contracts listed
534
329 calls · 295 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
76.00
-8.9% from close
2026-10-09
GEX flip
63.86
-23.4% from close
Net GEX
5,059,649
9,327,918 per 100k OI
Call wall
87.00
+4.3% from close
Put wall
65.00
-22.0% from close
Put/call OI
0.41
15,698 puts / 38,544 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
86.5
within trailing 52-week range
Front / back ATM IV
+78.1% / +86.9%
-8.8 pp front premium
Expected move
+10.8%
7 DTE · one standard deviation
ATM straddle / spot
+7.7%
front-window midpoint premium
25Δ risk reversal
85.6 pp
put IV minus call IV
IV butterfly
3.0 pp
front-window smile convexity
Volume / open interest
0.03
1,851 contracts traded
Normalized net delta
0.327
option-holder convention
Modeled dealer delta
-0.322
opposite-side scenario
Vanna / 100k OI
690
volatility-sensitive delta
Charm / 100k OI
-9,853,380
time-decay-sensitive delta
IV surface range
105.7 pp
published contour maximum minus minimum

Download the complete dated analysis JSON .

ACMR closed 3.9% below its gamma max of 86.62. It is 17.9% above the delta neutral price of 68.46. That is a fresh cross: the previous close was on the other side of gamma max. Total open interest is 54,242, -5.7% 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

Neighbours by open interest

← VFF (#950) PGR (#952) →

Questions people ask about ACMR

Where is ACMR's gamma max today?

As of Oct 2, 2026, the gamma max for ACMR is 86.62, +3.9% from the 83.38 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 ACMR above or below its delta neutral price?

ACMR closed above delta neutral: 83.38 against a delta neutral price of 68.46. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does ACMR have?

54,242 contracts of open interest across 534 listed contracts on Oct 2, 2026, -5.7% 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.