ASPI max pain, gamma exposure (GEX) & options open interest
As of close · rank #473 by open interest · 481 sessions of history since Nov 1, 2024
ASPI's nearest-expiration max pain is 1.50 for 2026-10-09, net GEX is 1,892,002, its put/call open-interest ratio is 0.18. 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: 7d expected move +12.2% · 25Δ risk reversal -15.8 pp
ASPI closed 73.1% above its gamma max of 0.78. It is 46.6% above the delta neutral price of 1.55. Total open interest is 160,044, -1.3% versus the previous session. Its options catalyst-intensity score is 59.0 out of 100, led by 7d expected move +12.2%, 25Δ risk reversal -15.8 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 | -726 contracts · -0.5% |
| Put OI change, 1 session | -1,402 contracts · -5.5% |
| Call minus put OI growth, 1 session | +4.9 pp |
| Call OI change, 5 sessions | +3,881 contracts · +2.9% |
| Put OI change, 5 sessions | -1,133 contracts · -4.5% |
| Call minus put OI growth, 5 sessions | +7.4 pp |
| Daily call OI change surprise | -0.06σ (252 prior changes) |
| Daily put OI change surprise | -0.40σ (252 prior changes) |
| Daily call-minus-put growth surprise | +1.29σ (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 Aug 20, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 25 | -1.5% | -4.0% to +2.3% | 40% | -3.6% to +2.2% | 0.0% |
| Day +2 | 25 | -1.5% | -5.1% to +3.2% | 44% | -4.6% to +2.6% | 0.0% |
| Day +3 | 25 | -3.7% | -9.5% to -0.3% | 24% | -9.3% to -0.7% | -0.7% |
| Day +4 | 25 | -3.4% | -10.9% to +1.2% | 28% | -9.1% to -0.1% | -0.1% |
| Day +5 | 25 | -2.1% | -9.4% to +0.4% | 32% | -7.5% to +0.1% | 0.0% |
| Day +6 | 25 | -1.8% | -11.1% to +3.5% | 40% | -5.3% to +2.8% | 0.0% |
| Day +7 | 25 | -3.4% | -13.3% to +4.7% | 36% | -9.4% to +1.8% | 0.0% |
| Day +8 | 25 | -0.7% | -6.8% to +1.9% | 44% | -5.6% to +1.2% | 0.0% |
| Day +9 | 25 | -3.1% | -7.5% to +7.8% | 40% | -6.4% to +7.2% | 0.0% |
| Day +10 | 25 | -0.3% | -8.8% to +8.5% | 44% | -7.8% to +5.5% | 0.0% |
Crosses above gamma max 18 completed Day +10 paths · latest Aug 19, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 18 | -3.4% | -6.8% to -0.1% | 28% | -5.7% to -0.9% | -0.9% |
| Day +2 | 18 | -2.4% | -8.5% to +3.1% | 39% | -7.4% to +2.0% | 0.0% |
| Day +3 | 18 | -3.6% | -9.6% to +5.6% | 39% | -6.8% to +3.0% | 0.0% |
| Day +4 | 18 | -4.8% | -11.8% to -1.7% | 17% | -11.1% to -2.2% | -2.2% |
| Day +5 | 18 | -3.9% | -14.7% to +2.0% | 28% | -14.3% to -0.5% | -0.5% |
| Day +6 | 18 | -8.6% | -13.6% to -1.7% | 22% | -13.3% to -3.2% | -3.2% |
| Day +7 | 18 | -10.3% | -15.0% to -1.3% | 22% | -14.8% to -3.6% | -3.6% |
| Day +8 | 18 | -9.2% | -18.2% to -0.3% | 28% | -17.3% to -1.7% | -1.7% |
| Day +9 | 18 | -10.8% | -15.5% to -2.9% | 11% | -12.2% to -3.9% | -3.9% |
| Day +10 | 18 | -8.3% | -12.5% to -1.8% | 22% | -11.7% to -3.9% | -3.9% |
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 | 21% |
| Gamma max crosses | 31 |
| Delta neutral crosses | 0 |
| Prior-year sessions closer to gamma max | 96.4% of 252 |
| Prior-year sessions closer to delta neutral | 77.8% of 252 |
| Open interest percentile (1y) | 12th |
| Daily open interest change versus prior year | -0.14σ (-2,128 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +1.7% |
| Open interest change, 21 sessions | -1.5% |
| History available | Nov 1, 2024 → Oct 2, 2026 |
Recent crosses
- closed above gamma max at 3.18 vs 0.59 (+81.4%)
- closed below gamma max at 3.18 vs 4.56 (-43.5%)
- closed above gamma max at 3.24 vs 0.62 (+80.8%)
- closed below gamma max at 3.95 vs 4.04 (-2.2%)
- closed above gamma max at 4.09 vs 4.01 (+2.0%)
- closed below gamma max at 4.02 vs 4.25 (-5.8%)
- closed above gamma max at 4.44 vs 4.22 (+5.0%)
- closed below gamma max at 4.29 vs 5.01 (-16.7%)
- closed above gamma max at 3.78 vs 2.00 (+47.0%)
- closed below gamma max at 4.05 vs 6.05 (-49.4%)
In today's screens
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Neighbours by open interest
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Canonical source: https://halfonadouble.com/stock/ASPI
Questions people ask about ASPI
Where is ASPI's gamma max today?
As of Oct 2, 2026, the gamma max for ASPI is 0.78, -73.1% from the 2.91 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 ASPI above or below its delta neutral price?
ASPI closed above delta neutral: 2.91 against a delta neutral price of 1.55. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does ASPI have?
160,044 contracts of open interest across 142 listed contracts on Oct 2, 2026, -1.3% 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.