STLA max pain, gamma exposure (GEX) & options open interest
As of close · rank #247 by open interest · 1,361 sessions of history since Jan 19, 2021
STLA's nearest-expiration max pain is 1.50 for 2026-10-09, net GEX is 8,295,989, its put/call open-interest ratio is 0.33. 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: OI change 1.27σ · 25Δ risk reversal -77.0 pp
STLA closed 16.7% below its gamma max of 5.14. It is 10.5% above the delta neutral price of 3.94. Total open interest is 402,544, +5.0% versus the previous session. Its options catalyst-intensity score is 60.3 out of 100, led by OI change 1.27σ, 25Δ risk reversal -77.0 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 | +17,952 contracts · +6.3% |
| Put OI change, 1 session | +1,320 contracts · +1.3% |
| Call minus put OI growth, 1 session | +5.0 pp |
| Call OI change, 5 sessions | +32,095 contracts · +11.8% |
| Put OI change, 5 sessions | +2,748 contracts · +2.8% |
| Call minus put OI growth, 5 sessions | +9.0 pp |
| Daily call OI change surprise | +1.56σ (252 prior changes) |
| Daily put OI change surprise | +0.32σ (252 prior changes) |
| Daily call-minus-put growth surprise | +1.62σ (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 14 completed Day +10 paths · latest Feb 5, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 14 | -0.1% | -0.9% to +1.4% | 36% | -1.0% to +1.7% | 0.0% |
| Day +2 | 14 | +0.8% | -1.0% to +1.7% | 57% | -1.1% to +1.9% | 0.0% |
| Day +3 | 14 | -0.8% | -2.2% to +1.9% | 36% | -2.3% to +2.2% | 0.0% |
| Day +4 | 14 | -1.7% | -4.8% to +2.0% | 36% | -5.5% to +2.5% | 0.0% |
| Day +5 | 14 | -1.7% | -4.7% to +2.0% | 43% | -4.7% to +2.4% | 0.0% |
| Day +6 | 14 | -2.0% | -4.2% to +2.2% | 36% | -4.4% to +2.3% | 0.0% |
| Day +7 | 14 | -1.1% | -5.0% to +0.6% | 36% | -5.4% to +0.7% | 0.0% |
| Day +8 | 14 | -1.9% | -5.3% to +1.4% | 36% | -5.3% to +1.7% | 0.0% |
| Day +9 | 14 | -2.3% | -4.8% to +0.2% | 29% | -4.9% to +0.3% | 0.0% |
| Day +10 | 14 | -3.3% | -5.4% to +0.3% | 29% | -5.6% to +0.6% | 0.0% |
Crosses above gamma max 18 completed Day +10 paths · latest Feb 4, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 18 | -0.0% | -0.8% to +1.5% | 44% | -0.6% to +1.3% | 0.0% |
| Day +2 | 18 | -0.5% | -1.5% to +2.0% | 39% | -1.0% to +1.9% | 0.0% |
| Day +3 | 18 | +0.1% | -2.4% to +1.9% | 56% | -2.0% to +1.7% | 0.0% |
| Day +4 | 18 | -0.1% | -4.2% to +1.4% | 44% | -2.5% to +1.4% | 0.0% |
| Day +5 | 18 | -1.0% | -5.3% to +1.7% | 39% | -5.0% to +1.1% | 0.0% |
| Day +6 | 18 | -3.1% | -5.6% to +2.4% | 28% | -5.3% to -0.0% | -0.0% |
| Day +7 | 18 | -2.1% | -4.9% to +0.5% | 33% | -4.7% to +0.4% | 0.0% |
| Day +8 | 18 | -1.3% | -5.9% to +2.6% | 33% | -4.7% to +1.3% | 0.0% |
| Day +9 | 18 | -1.3% | -6.7% to +4.3% | 33% | -3.7% to +2.5% | 0.0% |
| Day +10 | 18 | -1.4% | -6.8% to +4.2% | 39% | -5.0% to +2.2% | 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 | 1% |
| Gamma max crosses | 7 |
| Delta neutral crosses | 44 |
| Prior-year sessions closer to gamma max | 24.2% of 252 |
| Prior-year sessions closer to delta neutral | 87.3% of 252 |
| Open interest percentile (1y) | 80th |
| Daily open interest change versus prior year | +1.27σ (19,272 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +9.5% |
| Open interest change, 21 sessions | +2.9% |
| History available | Jan 19, 2021 → Oct 2, 2026 |
Recent crosses
- closed above delta neutral at 4.69 vs 4.48 (+4.5%)
- closed below delta neutral at 5.26 vs 5.26 (-0.1%)
- closed above delta neutral at 5.28 vs 5.23 (+1.0%)
- closed below delta neutral at 5.29 vs 5.30 (-0.1%)
- closed above delta neutral at 5.28 vs 5.13 (+2.7%)
- closed below delta neutral at 5.15 vs 5.24 (-1.8%)
- closed above delta neutral at 5.26 vs 5.22 (+0.7%)
- closed below delta neutral at 5.22 vs 5.29 (-1.4%)
- closed above delta neutral at 5.05 vs 5.02 (+0.6%)
- closed below delta neutral at 5.36 vs 5.43 (-1.3%)
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/STLA
Questions people ask about STLA
Where is STLA's gamma max today?
As of Oct 2, 2026, the gamma max for STLA is 5.14, +16.7% from the 4.40 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 STLA above or below its delta neutral price?
STLA closed above delta neutral: 4.40 against a delta neutral price of 3.94. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does STLA have?
402,544 contracts of open interest across 177 listed contracts on Oct 2, 2026, +5.0% 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.