HAL max pain, gamma exposure (GEX) & options open interest
As of close · rank #235 by open interest · 1,394 sessions of history since Dec 1, 2020
HAL's nearest-expiration max pain is 32.00 for 2026-10-09, its GEX flip is 27.86, net GEX is 15,837,942, its put/call open-interest ratio is 0.61. 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: smile convexity 12.6 pp · front IV premium 1.0 pp · IV rank 86
HAL closed 15.6% below its gamma max of 36.82. It is 1.4% above the delta neutral price of 31.41. Total open interest is 433,248, -1.6% versus the previous session. Its options catalyst-intensity score is 55.5 out of 100, led by smile convexity 12.6 pp, front IV premium 1.0 pp, IV rank 86. 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 | -4,342 contracts · -1.6% |
| Put OI change, 1 session | -2,778 contracts · -1.7% |
| Call minus put OI growth, 1 session | +0.1 pp |
| Call OI change, 5 sessions | +2,618 contracts · +1.0% |
| Put OI change, 5 sessions | +2,861 contracts · +1.8% |
| Call minus put OI growth, 5 sessions | -0.8 pp |
| Daily call OI change surprise | -0.24σ (252 prior changes) |
| Daily put OI change surprise | -0.14σ (252 prior changes) |
| Daily call-minus-put growth surprise | -0.00σ (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 25 completed Day +10 paths · latest Sep 10, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 25 | +0.5% | -0.6% to +2.1% | 56% | -0.4% to +1.7% | 0.0% |
| Day +2 | 25 | +1.2% | -0.4% to +3.1% | 72% | +0.1% to +2.9% | +0.1% |
| Day +3 | 25 | +1.6% | -0.4% to +3.6% | 64% | -0.2% to +3.5% | 0.0% |
| Day +4 | 25 | +0.8% | -2.5% to +3.5% | 52% | -2.0% to +2.5% | 0.0% |
| Day +5 | 25 | -1.2% | -2.6% to +5.8% | 44% | -2.4% to +5.3% | 0.0% |
| Day +6 | 25 | +1.0% | -2.5% to +7.5% | 56% | -2.4% to +7.2% | 0.0% |
| Day +7 | 25 | +0.6% | -3.8% to +6.7% | 56% | -3.3% to +6.3% | 0.0% |
| Day +8 | 25 | +0.5% | -4.7% to +6.5% | 52% | -4.3% to +5.7% | 0.0% |
| Day +9 | 25 | +2.9% | -6.4% to +6.5% | 56% | -2.8% to +5.2% | 0.0% |
| Day +10 | 25 | +0.6% | -4.9% to +7.8% | 56% | -4.5% to +7.0% | 0.0% |
Crosses above gamma max 24 completed Day +10 paths · latest Sep 4, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 24 | -0.8% | -1.8% to +0.3% | 29% | -1.4% to -0.3% | -0.3% |
| Day +2 | 24 | -0.8% | -3.0% to +1.1% | 42% | -2.6% to +0.7% | 0.0% |
| Day +3 | 24 | -0.0% | -2.3% to +3.2% | 50% | -2.1% to +2.3% | 0.0% |
| Day +4 | 24 | +0.2% | -2.1% to +3.3% | 63% | -1.4% to +3.0% | 0.0% |
| Day +5 | 24 | -0.0% | -4.3% to +2.8% | 46% | -3.8% to +2.2% | 0.0% |
| Day +6 | 24 | -0.9% | -4.8% to +2.4% | 42% | -4.2% to +2.0% | 0.0% |
| Day +7 | 24 | -0.7% | -5.7% to +5.1% | 46% | -4.8% to +4.0% | 0.0% |
| Day +8 | 24 | -1.2% | -4.5% to +5.1% | 42% | -4.0% to +3.6% | 0.0% |
| Day +9 | 24 | -0.1% | -5.8% to +4.5% | 50% | -5.0% to +2.9% | 0.0% |
| Day +10 | 24 | -0.3% | -5.8% to +3.8% | 50% | -5.1% to +3.4% | 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 | 5% |
| Gamma max crosses | 16 |
| Delta neutral crosses | 12 |
| Prior-year sessions closer to gamma max | 91.7% of 252 |
| Prior-year sessions closer to delta neutral | 7.5% of 252 |
| Open interest percentile (1y) | 4th |
| Daily open interest change versus prior year | -0.20σ (-7,120 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +1.3% |
| Open interest change, 21 sessions | -17.2% |
| History available | Dec 1, 2020 → Oct 2, 2026 |
Recent crosses
- closed above delta neutral at 31.80 vs 31.62 (+0.6%)
- closed below delta neutral at 31.54 vs 31.56 (-0.1%)
- closed below gamma max at 36.07 vs 36.19 (-0.3%)
- closed above gamma max at 37.07 vs 36.78 (+0.8%)
- closed below gamma max at 37.29 vs 37.67 (-1.0%)
- closed above gamma max at 37.63 vs 37.60 (+0.1%)
- closed above delta neutral at 33.64 vs 32.44 (+3.6%)
- closed below delta neutral at 31.89 vs 32.27 (-1.2%)
- closed above delta neutral at 32.51 vs 31.95 (+1.7%)
- closed below delta neutral at 31.82 vs 31.94 (-0.4%)
In today's screens
Neighbours by open interest
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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/HAL
Questions people ask about HAL
Where is HAL's gamma max today?
As of Oct 2, 2026, the gamma max for HAL is 36.82, +15.6% from the 31.85 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 HAL above or below its delta neutral price?
HAL closed above delta neutral: 31.85 against a delta neutral price of 31.41. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does HAL have?
433,248 contracts of open interest across 417 listed contracts on Oct 2, 2026, -1.6% 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.