BX max pain, gamma exposure (GEX) & options open interest
As of close · rank #219 by open interest · 1,394 sessions of history since Dec 1, 2020
BX's nearest-expiration max pain is 114.00 for 2026-10-09, its GEX flip is 172.97, net GEX is -20,075,682, its put/call open-interest ratio is 1.70. 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 -240.9 pp · IV rank 100
BX closed 83.1% below its gamma max of 204.63. It is 19.1% below the delta neutral price of 133.04. Total open interest is 462,748, -0.4% versus the previous session. Its options catalyst-intensity score is 57.2 out of 100, led by 25Δ risk reversal -240.9 pp, IV rank 100. 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 | -1,494 contracts · -0.9% |
| Put OI change, 1 session | -316 contracts · -0.1% |
| Call minus put OI growth, 1 session | -0.8 pp |
| Call OI change, 5 sessions | +14,285 contracts · +9.1% |
| Put OI change, 5 sessions | +18,469 contracts · +6.8% |
| Call minus put OI growth, 5 sessions | +2.3 pp |
| Daily call OI change surprise | -0.20σ (252 prior changes) |
| Daily put OI change surprise | -0.08σ (252 prior changes) |
| Daily call-minus-put growth surprise | -0.25σ (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 27 completed Day +10 paths · latest Aug 14, 2025
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 27 | -0.1% | -0.5% to +1.3% | 48% | -0.4% to +0.6% | 0.0% |
| Day +2 | 27 | +0.3% | -0.8% to +1.0% | 59% | -0.5% to +0.7% | 0.0% |
| Day +3 | 27 | +0.7% | -0.1% to +2.5% | 74% | +0.2% to +1.4% | +0.2% |
| Day +4 | 27 | +1.3% | -0.7% to +3.3% | 70% | +0.3% to +3.1% | +0.3% |
| Day +5 | 27 | +2.1% | -2.3% to +3.2% | 67% | -0.1% to +2.9% | 0.0% |
| Day +6 | 27 | +1.8% | -1.2% to +3.0% | 67% | -0.1% to +2.9% | 0.0% |
| Day +7 | 27 | +1.7% | -2.0% to +4.5% | 63% | -1.3% to +3.4% | 0.0% |
| Day +8 | 27 | +1.4% | -1.3% to +4.3% | 63% | -0.5% to +4.1% | 0.0% |
| Day +9 | 27 | +2.1% | -2.2% to +6.1% | 59% | -1.7% to +3.9% | 0.0% |
| Day +10 | 27 | +1.7% | -2.8% to +4.1% | 63% | -2.4% to +4.0% | 0.0% |
Crosses above gamma max 26 completed Day +10 paths · latest Aug 13, 2025
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 26 | +0.2% | -0.8% to +1.5% | 54% | -0.3% to +1.1% | 0.0% |
| Day +2 | 26 | +1.0% | -0.4% to +1.9% | 65% | -0.1% to +1.6% | 0.0% |
| Day +3 | 26 | +1.1% | -0.8% to +2.7% | 62% | -0.8% to +2.1% | 0.0% |
| Day +4 | 26 | +1.4% | -0.9% to +2.8% | 65% | -0.5% to +2.3% | 0.0% |
| Day +5 | 26 | +1.3% | -0.3% to +4.4% | 65% | -0.0% to +2.4% | 0.0% |
| Day +6 | 26 | +1.8% | -1.0% to +3.8% | 69% | +1.0% to +3.1% | +1.0% |
| Day +7 | 26 | +2.3% | -0.1% to +4.3% | 73% | +1.0% to +3.8% | +1.0% |
| Day +8 | 26 | +2.5% | -0.5% to +6.0% | 73% | +1.0% to +5.3% | +1.0% |
| Day +9 | 26 | +2.8% | -1.3% to +6.4% | 69% | +1.1% to +6.0% | +1.1% |
| Day +10 | 26 | +3.5% | -1.3% to +7.8% | 65% | -0.7% to +6.4% | 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 | 0% |
| Gamma max crosses | 0 |
| Delta neutral crosses | 23 |
| Prior-year sessions closer to gamma max | 95.2% of 252 |
| Prior-year sessions closer to delta neutral | 93.7% of 252 |
| Open interest percentile (1y) | 88th |
| Daily open interest change versus prior year | -0.14σ (-1,810 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +7.6% |
| Open interest change, 21 sessions | -7.7% |
| History available | Dec 1, 2020 → Oct 2, 2026 |
Recent crosses
- closed below delta neutral at 143.60 vs 143.63 (-0.0%)
- closed above delta neutral at 134.67 vs 132.12 (+1.9%)
- closed below delta neutral at 129.40 vs 132.15 (-2.1%)
- closed above delta neutral at 132.57 vs 132.45 (+0.1%)
- closed below delta neutral at 129.08 vs 131.46 (-1.8%)
- closed above delta neutral at 130.19 vs 128.01 (+1.7%)
- closed below delta neutral at 153.91 vs 158.64 (-3.1%)
- closed above delta neutral at 158.71 vs 156.58 (+1.3%)
- closed below delta neutral at 155.25 vs 155.30 (-0.0%)
- closed above delta neutral at 157.62 vs 155.77 (+1.2%)
In today's screens
Neighbours by open interest
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Canonical source: https://halfonadouble.com/stock/BX
Questions people ask about BX
Where is BX's gamma max today?
As of Oct 2, 2026, the gamma max for BX is 204.63, +83.1% from the 111.74 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 BX above or below its delta neutral price?
BX closed below delta neutral: 111.74 against a delta neutral price of 133.04. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does BX have?
462,748 contracts of open interest across 965 listed contracts on Oct 2, 2026, -0.4% 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.