Data through close

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

As of close · rank #119 by open interest · 1,394 sessions of history since Dec 1, 2020

XSP's nearest-expiration max pain is 772.00 for 2026-10-26, net GEX is -219,103,222, its put/call open-interest ratio is 2.65. These are whole-chain derived aggregates as of Oct 23, 2026 close.

XSP max pain and GEX snapshot

End-of-day snapshot for . Nearest-expiration max pain uses the expiry shown on its card; GEX uses the whole chain. Missing values are unavailable, not zero.

Nearest-expiration max pain
772.00
+1.3% from close
Expiry: 2026-10-26
GEX flip
–
Net GEX
-219,103,222
-25,487,996 per 100k OI
Call wall
830.00
+8.9% from close
Put wall
760.00
-0.3% from close
Put/call OI
2.65
624,288 puts / 235,345 calls

Prices are in US dollars per share. Net GEX is modeled dollar-delta change per $1 underlying move. Max pain minimizes aggregate intrinsic payout for that expiration; it is not a closing-price forecast. Signed GEX uses calls positive and puts negative, a model convention rather than observed dealer inventory. The flip is a confirmed zero crossing; walls locate side-specific concentrations, not guaranteed support or resistance.

Learn how to read the max pain payout example, GEX chart, gamma flip and walls, and open interest versus trading volume.

Close
762.36
prev 766.34
Gamma max
804.49
+5.5% from close
Delta neutral
778.60
+2.1% from close
Gamma neutral
762.36
0.0% from close
Open interest
859,633
-2.3% vs prev
Contracts listed
7,625
3,512 calls · 4,527 puts

Advanced options analysis

Public aggregate 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
43.0
cross-sectional score / 100
Directional score
-25.5
relatively bearish positioning
IV rank
8.7
within trailing 52-week range
Front IV premium
2.2 pp
front minus back volatility difference
25Δ risk reversal
2.2 pp
put IV minus call IV
IV butterfly
6.7 pp
front-window smile convexity
Volume / open interest
0.32
292,823 contracts traded
Normalized net delta
-0.103
option-holder convention
Modeled dealer delta
0.102
opposite-side scenario
Vanna / 100k OI
3,051
volatility-sensitive delta
Charm / 100k OI
8,375,650
time-decay-sensitive delta
IV surface range
110.3 pp
aggregate volatility dispersion

Strongest relative signals: volume/OI 0.32

Download the dated aggregate analysis JSON .

XSP closed 5.5% below its gamma max of 804.49. It is 2.1% below the delta neutral price of 778.60. Total open interest is 859,633, -2.3% versus the previous session. Its options catalyst-intensity score is 43.0 out of 100, led by volume/OI 0.32. What gamma max means · What delta neutral means

Call versus put open interest changes

Growth compares outstanding contracts on each side. A positive growth gap favors calls; a negative gap favors puts. Standardized surprises compare each measure with its own prior history. These describe the OI balance, not IV skew or buying direction.

XSP call and put open interest changes
Measure Value
Call OI change, 1 session -5,089 contracts · -2.1%
Put OI change, 1 session -14,845 contracts · -2.3%
Call minus put OI growth, 1 session +0.2 pp
Call OI change, 5 sessions +3,484 contracts · +1.5%
Put OI change, 5 sessions +78,629 contracts · +14.4%
Call minus put OI growth, 5 sessions -12.9 pp
Daily call OI change surprise -0.81σ (242 prior changes)
Daily put OI change surprise -0.77σ (242 prior changes)
Daily call-minus-put growth surprise +0.03σ (242 prior changes)

History

2025-10 2026-10
close delta neutral gamma max
Full history since 2020: drag to pan, scroll to zoom, hover for values. Open full-screen chart

Analysis visualizations

Daily ticker aggregates through 2026-10-23. The max pain curve pools all listed expirations; individual contracts are outside the public dataset.

Aggregate IV history

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Swipe chart sideways to see the full range.

What followed prior gamma-max crosses?

Each historical path starts at 0% on the cross date and follows the close for ten subsequent trading sessions. Cohorts use the same direction as labelled and require gamma max to be within 10% of the close on both crossing sessions.

Crosses below gamma max 4 completed Day +10 paths · latest Mar 22, 2024
XSP returns after crossing below gamma max Historical close-to-close return paths from Day 0 through Day 10, with the median, middle fifty percent, and a nominal confidence interval for the median. -2.0% -1.0% 0% +1.0% +2.0% Cross on Apr 16, 2021 Cross on Nov 5, 2021 Cross on Jun 16, 2023 Cross on Mar 22, 2024 Day 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
prior crosses middle 50% of outcomes nominal ≥90% median interval median
XSP historical gamma-max cross outcomes after closing below
Horizon n Median Middle 50% Above zero Nominal ≥90% median interval Confidence floor
Day +1 4 -0.4% -0.5% to -0.2% 25% – –
Day +2 4 -0.8% -1.0% to -0.5% 0% – –
Day +3 4 -0.5% -0.8% to -0.2% 25% – –
Day +4 4 -1.1% -1.2% to -0.7% 25% – –
Day +5 4 -0.2% -0.7% to -0.0% 25% – –
Day +6 4 -0.4% -0.6% to -0.2% 25% – –
Day +7 4 -0.2% -0.6% to +0.0% 50% – –
Day +8 4 -0.2% -0.6% to -0.2% 0% – –
Day +9 4 +0.4% -0.0% to +0.7% 75% – –
Day +10 4 -0.1% -0.2% to +0.2% 50% – –
Crosses above gamma max 4 completed Day +10 paths · latest Mar 21, 2024
XSP returns after crossing above gamma max Historical close-to-close return paths from Day 0 through Day 10, with the median, middle fifty percent, and a nominal confidence interval for the median. -2.0% -1.0% 0% +1.0% +2.0% Cross on Apr 14, 2021 Cross on Nov 3, 2021 Cross on Jun 15, 2023 Cross on Mar 21, 2024 Day 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
prior crosses middle 50% of outcomes nominal ≥90% median interval median
XSP historical gamma-max cross outcomes after closing above
Horizon n Median Middle 50% Above zero Nominal ≥90% median interval Confidence floor
Day +1 4 +0.1% -0.2% to +0.6% 50% – –
Day +2 4 +0.2% -0.5% to +1.0% 50% – –
Day +3 4 +0.1% -0.9% to +0.9% 50% – –
Day +4 4 +0.2% -0.1% to +0.4% 75% – –
Day +5 4 -0.0% -0.6% to +0.5% 50% – –
Day +6 4 -0.1% -0.7% to +0.1% 50% – –
Day +7 4 -0.1% -0.8% to +0.7% 50% – –
Day +8 4 -0.0% -0.7% to +0.8% 50% – –
Day +9 4 +0.1% -0.9% to +1.0% 50% – –
Day +10 4 +0.6% +0.3% to +0.9% 75% – –

Returns are close-to-close after the labelled number of subsequent trading sessions. The confidence floor is the closest-to-zero bound of the order-statistic median interval; it is zero when that interval spans zero. Its coverage is nominally at least 90% under independent observations. Historical paths can overlap, so the interval and floor are descriptive uncertainty guides rather than formal coverage guarantees. Historical, not a forecast.

Last 252 sessions

XSP trailing historical statistics
Sessions closed above gamma max 0%
Gamma max crosses 0
Delta neutral crosses 38
Prior-year sessions closer to gamma max 84.1% of 252
Prior-year sessions closer to delta neutral 80.6% of 252
Open interest percentile (1y) 99th
Daily open interest change versus prior year -0.76σ (-19,934 contracts; 252 prior changes)
Open interest change, 5 sessions +10.6%
Open interest change, 21 sessions +7.8%
History available Dec 1, 2020 → Oct 23, 2026

Recent crosses

  1. closed below delta neutral at 771.96 vs 777.14 (-0.7%)
  2. closed above delta neutral at 772.29 vs 770.74 (+0.2%)
  3. closed below delta neutral at 768.37 vs 769.56 (-0.2%)
  4. closed above delta neutral at 776.48 vs 768.57 (+1.0%)
  5. closed below delta neutral at 767.37 vs 770.09 (-0.4%)
  6. closed above delta neutral at 774.54 vs 770.11 (+0.6%)
  7. closed below delta neutral at 768.66 vs 769.56 (-0.1%)
  8. closed above delta neutral at 773.08 vs 769.38 (+0.5%)
  9. closed below delta neutral at 764.18 vs 767.93 (-0.5%)
  10. closed above delta neutral at 770.84 vs 768.58 (+0.3%)

In today's screens

Neighbours by open interest

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Canonical source: https://halfonadouble.com/stock/XSP

Questions people ask about XSP

What is XSP's max pain for the nearest expiration?

As of Oct 23, 2026 close, nearest-expiration max pain is 772.00 for the 2026-10-26 expiration. It is a payout-minimizing strike for one expiration. An all-expiration pooled value is a different comparison, and neither establishes where the underlying will close. Max pain definition and worked payout example.

Our 2025 max-pain study compares historical Thursday levels with Friday underlying closes and an unchanged-price baseline. Its scope and results are separate from this current ticker snapshot.

What do XSP's gamma exposure and gamma flip show?

Signed net GEX is -219,103,222 as of Oct 23, 2026 close. No confirmed GEX flip is available; this does not imply a zero exposure level. These aggregate model outputs use calls positive and puts negative. Their sign does not identify dealers' actual positions or predict the next move. How to interpret GEX, gamma flip and walls.

Where is XSP's gamma max today?

As of Oct 23, 2026, the gamma max for XSP is 804.49, +5.5% from the 762.36 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 XSP above or below its delta neutral price?

XSP closed below delta neutral: 762.36 against a delta neutral price of 778.60. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does XSP have?

859,633 contracts of open interest across 7,625 listed contracts on Oct 23, 2026, -2.3% 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.