Data through close

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

As of close · rank #4122 by open interest · snapshot page

Chart Download CSV JSON snapshot Advanced analysis

MMSI's nearest-expiration max pain is 70.00 for 2026-10-16, its GEX flip is 72.11, net GEX is 16,161, its put/call open-interest ratio is 0.80. These are whole-chain derived aggregates as of Oct 2, 2026 close.

Close
85.37
prev 86.15
Gamma max
80.55
-5.6% from close
Delta neutral
77.38
-9.4% from close
Gamma neutral
72.11
-15.5% from close
Open interest
451
+0.9% vs prev
Contracts listed
57
36 calls · 32 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
70.00
-18.0% from close
2026-10-16
GEX flip
72.11
-15.5% from close
Net GEX
16,161
3,583,288 per 100k OI
Call wall
80.00
-6.3% from close
Put wall
80.00
-6.3% from close
Put/call OI
0.80
200 puts / 251 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
21.1
within trailing 52-week range
Front / back ATM IV
+18.4% / +30.1%
-11.7 pp front premium
Expected move
+3.6%
14 DTE · one standard deviation
ATM straddle / spot
–
front-window midpoint premium
25Δ risk reversal
– pp
put IV minus call IV
IV butterfly
– pp
front-window smile convexity
Volume / open interest
0.03
12 contracts traded
Normalized net delta
0.295
option-holder convention
Modeled dealer delta
-0.290
opposite-side scenario
Vanna / 100k OI
0
volatility-sensitive delta
Charm / 100k OI
0
time-decay-sensitive delta
IV surface range
123.5 pp
published contour maximum minus minimum

Download the complete dated analysis JSON .

MMSI closed 5.6% above its gamma max of 80.55. It is 9.4% above the delta neutral price of 77.38. That is a fresh cross: the previous close was on the other side of gamma max. Total open interest is 451, +0.9% 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

Chart loads when this section is in view.

In today's screens

Neighbours by open interest

← THD (#4121) PFFV (#4123) →

Questions people ask about MMSI

Where is MMSI's gamma max today?

As of Oct 2, 2026, the gamma max for MMSI is 80.55, -5.6% from the 85.37 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 MMSI above or below its delta neutral price?

MMSI closed above delta neutral: 85.37 against a delta neutral price of 77.38. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does MMSI have?

451 contracts of open interest across 57 listed contracts on Oct 2, 2026, +0.9% 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.