Data through close

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

As of close · rank #402 by open interest · 1,399 sessions of history since Dec 1, 2020

FSLY's nearest-expiration max pain is 24.50 for 2026-10-16, its GEX flip is 23.53, net GEX is 4,936,182, its put/call open-interest ratio is 0.92. These are whole-chain derived aggregates as of Oct 9, 2026 close.

FSLY 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
24.50
-16.4% from close
Expiry: 2026-10-16
GEX flip
23.53
-19.7% from close
Net GEX
4,936,182
2,308,698 per 100k OI
Call wall
30.00
+2.4% from close
Put wall
17.50
-40.3% from close
Put/call OI
0.92
102,578 puts / 111,230 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
29.30
prev 25.29
Gamma max
29.86
+1.9% from close
Delta neutral
24.62
-16.0% from close
Gamma neutral
23.53
-19.7% from close
Open interest
213,808
-9.6% vs prev
Contracts listed
398
274 calls · 233 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
54.1
cross-sectional score / 100
Directional score
-1.9
mixed positioning
IV rank
71.5
within trailing 52-week range
Front IV premium
-3.7 pp
front minus back volatility difference
25Δ risk reversal
-3.7 pp
put IV minus call IV
IV butterfly
-5.0 pp
front-window smile convexity
Volume / open interest
0.18
42,307 contracts traded
Normalized net delta
0.270
option-holder convention
Modeled dealer delta
-0.260
opposite-side scenario
Vanna / 100k OI
1,439
volatility-sensitive delta
Charm / 100k OI
-1,618,381
time-decay-sensitive delta
IV surface range
118.8 pp
aggregate volatility dispersion

Strongest relative signals: volume/OI 0.18

Download the dated aggregate analysis JSON .

FSLY closed 1.9% below its gamma max of 29.86. It is 16.0% above the delta neutral price of 24.62. Total open interest is 213,808, -9.6% versus the previous session. Its options catalyst-intensity score is 54.1 out of 100, led by volume/OI 0.18. 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.

FSLY call and put open interest changes
Measure Value
Call OI change, 1 session -11,992 contracts · -9.7%
Put OI change, 1 session -10,607 contracts · -9.4%
Call minus put OI growth, 1 session -0.4 pp
Call OI change, 5 sessions -2,690 contracts · -2.4%
Put OI change, 5 sessions -2,212 contracts · -2.1%
Call minus put OI growth, 5 sessions -0.3 pp
Daily call OI change surprise -1.35σ (252 prior changes)
Daily put OI change surprise -2.11σ (252 prior changes)
Daily call-minus-put growth surprise -0.02σ (252 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 2026-10-09. Contract-level charts are outside the public dataset.

Aggregate IV history

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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 47 completed Day +10 paths · latest Sep 24, 2026
FSLY 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. -26.0% -13.0% 0% +13.0% +26.0% Cross on Dec 18, 2020 Cross on Jan 22, 2021 Cross on Jun 9, 2021 Cross on Oct 20, 2021 Cross on Jun 28, 2022 Cross on Jul 8, 2022 Cross on Nov 16, 2022 Cross on Jan 24, 2023 Cross on Feb 7, 2023 Cross on Feb 13, 2023 Cross on Jun 8, 2023 Cross on Jul 14, 2023 Cross on Jul 20, 2023 Cross on Aug 4, 2023 Cross on Sep 7, 2023 Cross on Sep 13, 2023 Cross on Jan 23, 2024 Cross on Feb 5, 2024 Cross on Feb 13, 2024 Cross on Sep 18, 2024 Cross on Nov 26, 2024 Cross on Dec 10, 2024 Cross on Jan 24, 2025 Cross on Jan 29, 2025 Cross on Feb 5, 2025 Cross on May 9, 2025 Cross on May 19, 2025 Cross on Jun 12, 2025 Cross on Jul 22, 2025 Cross on Aug 25, 2025 Cross on Sep 2, 2025 Cross on Sep 10, 2025 Cross on Sep 17, 2025 Cross on Nov 12, 2025 Cross on Jan 28, 2026 Cross on Feb 17, 2026 Cross on Mar 5, 2026 Cross on Mar 13, 2026 Cross on May 6, 2026 Cross on Jun 3, 2026 Cross on Aug 5, 2026 Cross on Aug 11, 2026 Cross on Aug 17, 2026 Cross on Sep 15, 2026 Cross on Sep 18, 2026 Cross on Sep 22, 2026 Cross on Sep 24, 2026 Day 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
prior crosses middle 50% of outcomes nominal ≥90% median interval median
FSLY historical gamma-max cross outcomes after closing below
Horizon n Median Middle 50% Above zero Nominal ≥90% median interval Confidence floor
Day +1 47 -1.2% -3.1% to +1.6% 34% -2.0% to -0.4% -0.4%
Day +2 47 -0.3% -6.2% to +2.8% 47% -2.0% to +0.6% 0.0%
Day +3 47 -0.1% -4.4% to +5.7% 49% -2.0% to +3.4% 0.0%
Day +4 47 +0.9% -5.8% to +6.7% 51% -1.7% to +4.4% 0.0%
Day +5 47 -1.1% -7.6% to +4.8% 49% -2.6% to +2.7% 0.0%
Day +6 47 -0.9% -10.6% to +5.0% 47% -4.6% to +1.8% 0.0%
Day +7 47 +0.1% -10.8% to +7.2% 51% -4.8% to +2.6% 0.0%
Day +8 47 -1.0% -11.2% to +5.4% 43% -5.0% to +2.0% 0.0%
Day +9 47 -2.8% -9.4% to +5.6% 38% -5.2% to +2.2% 0.0%
Day +10 47 -1.6% -11.2% to +8.1% 45% -6.1% to +4.5% 0.0%
Crosses above gamma max 45 completed Day +10 paths · latest Sep 23, 2026
FSLY 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. -26.0% -13.0% 0% +13.0% +26.0% Cross on Dec 17, 2020 Cross on Jan 21, 2021 Cross on Jun 8, 2021 Cross on Jun 24, 2022 Cross on Jul 7, 2022 Cross on Nov 15, 2022 Cross on Jan 13, 2023 Cross on Jan 27, 2023 Cross on Feb 16, 2023 Cross on May 26, 2023 Cross on Jun 13, 2023 Cross on Jul 13, 2023 Cross on Jul 18, 2023 Cross on Sep 1, 2023 Cross on Sep 8, 2023 Cross on Jan 22, 2024 Cross on Feb 2, 2024 Cross on Feb 8, 2024 Cross on Sep 17, 2024 Cross on Nov 29, 2024 Cross on Dec 6, 2024 Cross on Jan 23, 2025 Cross on Jan 28, 2025 Cross on Feb 4, 2025 Cross on May 12, 2025 Cross on Jun 9, 2025 Cross on Jul 21, 2025 Cross on Aug 22, 2025 Cross on Aug 28, 2025 Cross on Sep 9, 2025 Cross on Sep 12, 2025 Cross on Jan 27, 2026 Cross on Mar 2, 2026 Cross on Mar 9, 2026 Cross on Mar 18, 2026 Cross on Apr 1, 2026 Cross on May 5, 2026 Cross on Jul 30, 2026 Cross on Aug 4, 2026 Cross on Aug 14, 2026 Cross on Aug 19, 2026 Cross on Sep 14, 2026 Cross on Sep 17, 2026 Cross on Sep 21, 2026 Cross on Sep 23, 2026 Day 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10
prior crosses middle 50% of outcomes nominal ≥90% median interval median
FSLY historical gamma-max cross outcomes after closing above
Horizon n Median Middle 50% Above zero Nominal ≥90% median interval Confidence floor
Day +1 45 -1.4% -3.3% to +2.0% 40% -2.7% to +0.8% 0.0%
Day +2 45 -1.9% -5.3% to +2.1% 38% -3.5% to +0.4% 0.0%
Day +3 45 -2.3% -4.7% to +2.7% 38% -3.2% to +1.0% 0.0%
Day +4 45 +0.1% -6.7% to +4.9% 51% -4.0% to +2.1% 0.0%
Day +5 45 -2.9% -9.1% to +6.7% 44% -4.3% to +2.8% 0.0%
Day +6 45 -1.5% -10.5% to +5.0% 44% -5.4% to +2.3% 0.0%
Day +7 45 -2.6% -13.1% to +3.9% 40% -8.5% to +1.4% 0.0%
Day +8 45 -3.8% -14.9% to +4.3% 42% -7.3% to +1.9% 0.0%
Day +9 45 -3.2% -14.8% to +5.5% 36% -12.2% to -0.5% -0.5%
Day +10 45 -6.8% -13.7% to +6.6% 40% -9.7% to +0.1% 0.0%

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

FSLY trailing historical statistics
Sessions closed above gamma max 11%
Gamma max crosses 36
Delta neutral crosses 12
Prior-year sessions closer to gamma max 9.1% of 252
Prior-year sessions closer to delta neutral 72.2% of 252
Open interest percentile (1y) 77th
Daily open interest change versus prior year -1.72σ (-22,599 contracts; 252 prior changes)
Open interest change, 5 sessions -2.2%
Open interest change, 21 sessions -7.9%
History available Dec 1, 2020 → Oct 9, 2026

Recent crosses

  1. closed below gamma max at 26.68 vs 28.54 (-7.0%)
  2. closed above gamma max at 29.65 vs 28.84 (+2.7%)
  3. closed below gamma max at 26.08 vs 27.98 (-7.3%)
  4. closed above gamma max at 27.42 vs 26.28 (+4.1%)
  5. closed below gamma max at 23.86 vs 26.17 (-9.7%)
  6. closed above gamma max at 24.57 vs 24.56 (+0.0%)
  7. closed below gamma max at 24.30 vs 24.74 (-1.8%)
  8. closed above gamma max at 24.86 vs 24.64 (+0.9%)
  9. closed above delta neutral at 21.12 vs 20.47 (+3.1%)
  10. closed below delta neutral at 20.77 vs 20.79 (-0.1%)

In today's screens

Neighbours by open interest

Cite or embed this snapshot

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

Questions people ask about FSLY

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

As of Oct 9, 2026 close, nearest-expiration max pain is 24.50 for the 2026-10-16 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 FSLY's gamma exposure and gamma flip show?

Signed net GEX is 4,936,182 as of Oct 9, 2026 close. The confirmed GEX flip is 23.53. 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 FSLY's gamma max today?

As of Oct 9, 2026, the gamma max for FSLY is 29.86, +1.9% from the 29.30 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 FSLY above or below its delta neutral price?

FSLY closed above delta neutral: 29.30 against a delta neutral price of 24.62. The delta neutral price is where the summed delta of the whole chain is zero; the definition.

How much open interest does FSLY have?

213,808 contracts of open interest across 398 listed contracts on Oct 9, 2026, -9.6% 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.