GRAB max pain, gamma exposure (GEX) & options open interest
As of close · rank #47 by open interest · 1,140 sessions of history since Dec 3, 2021
GRAB's nearest-expiration max pain is 3.50 for 2026-10-09, its GEX flip is 0.63, net GEX is 83,691,476, its put/call open-interest ratio is 0.20. These are whole-chain derived aggregates as of Oct 2, 2026 close.
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.
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.
Strongest relative signals: 25Δ risk reversal -196.5 pp
GRAB closed 3.4% below its gamma max of 3.19. It is 14.6% above the delta neutral price of 2.63. Total open interest is 2,222,949, -1.2% versus the previous session. Its options catalyst-intensity score is 53.5 out of 100, led by 25Δ risk reversal -196.5 pp. 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.
| Measure | Value |
|---|---|
| Call OI change, 1 session | -12,709 contracts · -0.7% |
| Put OI change, 1 session | -14,533 contracts · -3.8% |
| Call minus put OI growth, 1 session | +3.1 pp |
| Call OI change, 5 sessions | +42,432 contracts · +2.3% |
| Put OI change, 5 sessions | -10,021 contracts · -2.7% |
| Call minus put OI growth, 5 sessions | +5.0 pp |
| Daily call OI change surprise | -0.30σ (252 prior changes) |
| Daily put OI change surprise | -1.21σ (252 prior changes) |
| Daily call-minus-put growth surprise | +0.95σ (252 prior changes) |
History
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Analysis visualizations
Derived from the 2026-10-02 options chain. Select an analysis to explore its chart.
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Gamma walls
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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 29 completed Day +10 paths · latest Sep 23, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 30 | -0.3% | -2.4% to +0.7% | 37% | -1.8% to +0.3% | 0.0% |
| Day +2 | 30 | -1.2% | -2.9% to +0.6% | 37% | -2.2% to +0.2% | 0.0% |
| Day +3 | 30 | -2.0% | -3.8% to +0.4% | 27% | -3.7% to -0.2% | -0.2% |
| Day +4 | 30 | -1.7% | -3.8% to +1.4% | 37% | -2.5% to +0.6% | 0.0% |
| Day +5 | 30 | -1.5% | -4.2% to +1.0% | 33% | -3.2% to -0.3% | -0.3% |
| Day +6 | 30 | -0.8% | -4.3% to +1.3% | 37% | -3.4% to +0.1% | 0.0% |
| Day +7 | 30 | -1.2% | -4.2% to +3.4% | 40% | -3.7% to +1.2% | 0.0% |
| Day +8 | 29 | -1.4% | -6.1% to +2.0% | 45% | -4.8% to +1.1% | 0.0% |
| Day +9 | 29 | -1.4% | -5.1% to +1.8% | 41% | -4.7% to +1.2% | 0.0% |
| Day +10 | 29 | -1.3% | -4.2% to +1.6% | 38% | -3.5% to +0.5% | 0.0% |
Crosses above gamma max 34 completed Day +10 paths · latest Sep 22, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 35 | 0.0% | -1.6% to +2.0% | 46% | -0.8% to +0.9% | 0.0% |
| Day +2 | 35 | -0.9% | -3.6% to +2.1% | 43% | -1.9% to +0.6% | 0.0% |
| Day +3 | 35 | -1.0% | -3.7% to +1.4% | 37% | -3.0% to +0.3% | 0.0% |
| Day +4 | 35 | -1.0% | -6.1% to +2.1% | 43% | -3.8% to +1.0% | 0.0% |
| Day +5 | 35 | -1.4% | -5.1% to +2.7% | 37% | -2.8% to +0.8% | 0.0% |
| Day +6 | 35 | -2.0% | -4.4% to +3.9% | 37% | -3.1% to +1.0% | 0.0% |
| Day +7 | 35 | -2.3% | -4.6% to +3.1% | 40% | -3.6% to +2.2% | 0.0% |
| Day +8 | 35 | -2.1% | -6.7% to +3.5% | 40% | -4.1% to +1.1% | 0.0% |
| Day +9 | 34 | -1.8% | -5.2% to +2.8% | 47% | -3.9% to +1.0% | 0.0% |
| Day +10 | 34 | -2.6% | -7.0% to +1.4% | 35% | -4.3% to +0.3% | 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
| Sessions closed above gamma max | 4% |
| Gamma max crosses | 10 |
| Delta neutral crosses | 0 |
| Prior-year sessions closer to gamma max | 8.7% of 252 |
| Prior-year sessions closer to delta neutral | 4.0% of 252 |
| Open interest percentile (1y) | 88th |
| Daily open interest change versus prior year | -0.53σ (-27,242 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +1.5% |
| Open interest change, 21 sessions | +34.5% |
| History available | Dec 3, 2021 → Oct 2, 2026 |
Recent crosses
- closed below gamma max at 3.20 vs 3.45 (-7.7%)
- closed above gamma max at 3.17 vs 3.07 (+3.1%)
- closed below gamma max at 3.68 vs 5.08 (-38.0%)
- closed above gamma max at 3.62 vs 3.50 (+3.3%)
- closed below gamma max at 3.66 vs 5.13 (-40.2%)
- closed above gamma max at 3.53 vs 3.50 (+0.8%)
- closed below gamma max at 5.78 vs 6.24 (-7.9%)
- closed above gamma max at 6.07 vs 6.04 (+0.6%)
- closed below gamma max at 5.93 vs 5.94 (-0.1%)
- closed above gamma max at 5.86 vs 5.80 (+1.0%)
In today's screens
Neighbours by open interest
Cite or embed this snapshot
Share the dated 1600×840 image or cite this canonical page. The card contains public derived aggregates, not contract-level quotes.
Canonical source: https://halfonadouble.com/stock/GRAB
Questions people ask about GRAB
Where is GRAB's gamma max today?
As of Oct 2, 2026, the gamma max for GRAB is 3.19, +3.4% from the 3.08 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 GRAB above or below its delta neutral price?
GRAB closed above delta neutral: 3.08 against a delta neutral price of 2.63. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does GRAB have?
2,222,949 contracts of open interest across 197 listed contracts on Oct 2, 2026, -1.2% 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.