B max pain, gamma exposure (GEX) & options open interest
As of close · rank #126 by open interest · 1,321 sessions of history since Dec 1, 2020
B's nearest-expiration max pain is 41.50 for 2026-10-09, its GEX flip is 39.08, net GEX is 4,359,532, its put/call open-interest ratio is 0.68. 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: IV rank 90
B closed 17.8% below its gamma max of 47.38. It is 4.5% above the delta neutral price of 38.44. Total open interest is 798,552, -1.6% versus the previous session. Its options catalyst-intensity score is 39.9 out of 100, led by IV rank 90. 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 | -12,076 contracts · -2.5% |
| Put OI change, 1 session | -1,186 contracts · -0.4% |
| Call minus put OI growth, 1 session | -2.1 pp |
| Call OI change, 5 sessions | +11,237 contracts · +2.4% |
| Put OI change, 5 sessions | +6,215 contracts · +2.0% |
| Call minus put OI growth, 5 sessions | +0.5 pp |
| Daily call OI change surprise | -0.37σ (252 prior changes) |
| Daily put OI change surprise | -0.02σ (252 prior changes) |
| Daily call-minus-put growth surprise | -1.01σ (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 49 completed Day +10 paths · latest Aug 21, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 49 | +0.4% | -0.7% to +1.3% | 61% | -0.1% to +0.6% | 0.0% |
| Day +2 | 49 | +0.5% | -1.6% to +2.1% | 55% | -0.5% to +1.1% | 0.0% |
| Day +3 | 49 | +0.2% | -2.0% to +1.8% | 53% | -1.2% to +1.1% | 0.0% |
| Day +4 | 49 | +0.0% | -1.5% to +3.4% | 51% | -0.5% to +1.2% | 0.0% |
| Day +5 | 49 | +0.2% | -2.8% to +5.5% | 55% | -0.5% to +2.3% | 0.0% |
| Day +6 | 49 | +0.3% | -2.6% to +5.0% | 53% | -0.9% to +3.0% | 0.0% |
| Day +7 | 49 | +0.4% | -2.8% to +6.8% | 55% | -0.7% to +4.1% | 0.0% |
| Day +8 | 49 | +2.4% | -1.2% to +7.7% | 65% | +0.1% to +4.9% | +0.1% |
| Day +9 | 49 | +1.6% | -1.8% to +7.2% | 61% | -0.4% to +4.2% | 0.0% |
| Day +10 | 49 | +0.3% | -2.1% to +7.7% | 57% | -0.7% to +4.2% | 0.0% |
Crosses above gamma max 47 completed Day +10 paths · latest Aug 20, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 47 | +0.4% | -1.0% to +1.3% | 60% | 0.0% to +0.8% | 0.0% |
| Day +2 | 47 | +0.5% | -0.6% to +1.9% | 62% | -0.1% to +0.9% | 0.0% |
| Day +3 | 47 | +0.6% | -0.6% to +2.7% | 66% | +0.1% to +1.7% | +0.1% |
| Day +4 | 47 | +0.4% | -1.7% to +3.3% | 62% | -0.0% to +1.5% | 0.0% |
| Day +5 | 47 | +0.4% | -1.8% to +3.6% | 57% | -0.5% to +2.0% | 0.0% |
| Day +6 | 47 | +0.1% | -2.4% to +5.0% | 55% | -0.3% to +2.4% | 0.0% |
| Day +7 | 47 | +0.4% | -2.7% to +4.6% | 57% | -0.7% to +2.7% | 0.0% |
| Day +8 | 47 | +2.1% | -2.0% to +5.8% | 64% | +0.0% to +4.2% | +0.0% |
| Day +9 | 47 | +2.5% | -2.2% to +7.1% | 64% | +0.0% to +4.8% | +0.0% |
| Day +10 | 47 | +2.8% | -1.6% to +7.9% | 66% | +0.2% to +6.1% | +0.2% |
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 | 9% |
| Gamma max crosses | 18 |
| Delta neutral crosses | 2 |
| Prior-year sessions closer to gamma max | 91.7% of 252 |
| Prior-year sessions closer to delta neutral | 4.0% of 252 |
| Open interest percentile (1y) | 27th |
| Daily open interest change versus prior year | -0.23σ (-13,262 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +2.2% |
| Open interest change, 21 sessions | -8.4% |
| History available | Dec 1, 2020 → Oct 2, 2026 |
Recent crosses
- closed below gamma max at 47.61 vs 48.18 (-1.2%)
- closed above gamma max at 46.29 vs 45.84 (+1.0%)
- closed below gamma max at 43.69 vs 43.80 (-0.3%)
- closed above gamma max at 41.06 vs 40.64 (+1.0%)
- closed below gamma max at 45.85 vs 45.97 (-0.3%)
- closed above gamma max at 47.04 vs 45.92 (+2.4%)
- closed above delta neutral at 37.14 vs 32.32 (+13.0%)
- closed below delta neutral at 38.28 vs 38.59 (-0.8%)
- closed below gamma max at 48.73 vs 51.07 (-4.8%)
- closed above gamma max at 49.03 vs 47.95 (+2.2%)
In today's screens
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Neighbours by open interest
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Canonical source: https://halfonadouble.com/stock/B
Questions people ask about B
Where is B's gamma max today?
As of Oct 2, 2026, the gamma max for B is 47.38, +17.8% from the 40.23 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 B above or below its delta neutral price?
B closed above delta neutral: 40.23 against a delta neutral price of 38.44. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does B have?
798,552 contracts of open interest across 523 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.