Data through close

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

As of close · rank #730 by open interest · snapshot page

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PSX's nearest-expiration max pain is 260.00 for 2026-10-09, its GEX flip is 250.47, net GEX is 1,617,789, its put/call open-interest ratio is 0.97. These are whole-chain derived aggregates as of Oct 2, 2026 close.

Close
264.58
prev 264.23
Gamma max
284.41
+7.5% from close
Delta neutral
239.97
-9.3% from close
Gamma neutral
250.47
-5.3% from close
Open interest
82,075
-3.8% vs prev
Contracts listed
731
496 calls · 431 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
-1.7% from close
2026-10-09
GEX flip
250.47
-5.3% from close
Net GEX
1,617,789
1,971,111 per 100k OI
Call wall
280.00
+5.8% from close
Put wall
250.00
-5.5% from close
Put/call OI
0.97
40,342 puts / 41,733 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
96.1
within trailing 52-week range
Front / back ATM IV
+42.3% / +44.8%
-2.5 pp front premium
Expected move
+5.9%
7 DTE · one standard deviation
ATM straddle / spot
+4.4%
front-window midpoint premium
25Δ risk reversal
-1.1 pp
put IV minus call IV
IV butterfly
8.5 pp
front-window smile convexity
Volume / open interest
0.05
3,898 contracts traded
Normalized net delta
0.233
option-holder convention
Modeled dealer delta
-0.220
opposite-side scenario
Vanna / 100k OI
656
volatility-sensitive delta
Charm / 100k OI
-2,349,369
time-decay-sensitive delta
IV surface range
83.0 pp
published contour maximum minus minimum

Download the complete dated analysis JSON .

PSX closed 7.5% below its gamma max of 284.41. It is 9.3% above the delta neutral price of 239.97. Total open interest is 82,075, -3.8% 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

← XXI (#729) LION (#731) →

Questions people ask about PSX

Where is PSX's gamma max today?

As of Oct 2, 2026, the gamma max for PSX is 284.41, +7.5% from the 264.58 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 PSX above or below its delta neutral price?

PSX closed above delta neutral: 264.58 against a delta neutral price of 239.97. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does PSX have?

82,075 contracts of open interest across 731 listed contracts on Oct 2, 2026, -3.8% 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.