GLW max pain, gamma exposure (GEX) & options open interest
As of close · rank #201 by open interest · 1,394 sessions of history since Dec 1, 2020
GLW's nearest-expiration max pain is 155.00 for 2026-10-09, its GEX flip is 157.33, net GEX is 5,248,579, its put/call open-interest ratio is 1.18. 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: IV rank 100 · volume/OI 0.11
GLW closed 10.1% below its gamma max of 180.82. It is 6.4% above the delta neutral price of 153.64. Total open interest is 497,478, -4.6% versus the previous session. Its options catalyst-intensity score is 52.0 out of 100, led by IV rank 100, volume/OI 0.11. 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 | -9,088 contracts · -3.8% |
| Put OI change, 1 session | -14,894 contracts · -5.2% |
| Call minus put OI growth, 1 session | +1.4 pp |
| Call OI change, 5 sessions | +6,808 contracts · +3.1% |
| Put OI change, 5 sessions | +7,264 contracts · +2.8% |
| Call minus put OI growth, 5 sessions | +0.3 pp |
| Daily call OI change surprise | -0.50σ (252 prior changes) |
| Daily put OI change surprise | -1.20σ (252 prior changes) |
| Daily call-minus-put growth surprise | +0.43σ (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 50 completed Day +10 paths · latest Jul 1, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 50 | +0.6% | -0.4% to +1.2% | 68% | +0.2% to +0.9% | +0.2% |
| Day +2 | 50 | +0.3% | -1.1% to +1.7% | 54% | -0.5% to +1.2% | 0.0% |
| Day +3 | 50 | +0.6% | -1.0% to +1.9% | 56% | -0.4% to +1.2% | 0.0% |
| Day +4 | 50 | +0.6% | -1.5% to +2.7% | 58% | -0.2% to +1.2% | 0.0% |
| Day +5 | 50 | +1.1% | -0.8% to +3.4% | 66% | +0.3% to +2.1% | +0.3% |
| Day +6 | 50 | +1.0% | -1.8% to +3.5% | 62% | -0.2% to +2.1% | 0.0% |
| Day +7 | 50 | +1.0% | -2.6% to +3.4% | 62% | 0.0% to +2.3% | 0.0% |
| Day +8 | 50 | +1.1% | -1.5% to +5.0% | 68% | +0.1% to +3.0% | +0.1% |
| Day +9 | 50 | +1.4% | -1.1% to +5.4% | 60% | -0.1% to +2.9% | 0.0% |
| Day +10 | 50 | +1.9% | -1.8% to +5.5% | 64% | +0.1% to +4.2% | +0.1% |
Crosses above gamma max 53 completed Day +10 paths · latest Jun 29, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 53 | -0.1% | -1.4% to +1.0% | 47% | -0.9% to +0.6% | 0.0% |
| Day +2 | 53 | -0.0% | -1.5% to +1.9% | 49% | -0.7% to +0.7% | 0.0% |
| Day +3 | 53 | +0.2% | -1.5% to +1.3% | 55% | -0.5% to +0.5% | 0.0% |
| Day +4 | 53 | +0.3% | -1.7% to +2.8% | 58% | -0.3% to +1.3% | 0.0% |
| Day +5 | 53 | +0.3% | -1.7% to +1.9% | 55% | -0.6% to +0.9% | 0.0% |
| Day +6 | 53 | +0.8% | -1.4% to +2.9% | 55% | -0.4% to +1.6% | 0.0% |
| Day +7 | 53 | +0.5% | -1.9% to +2.8% | 55% | -0.1% to +1.3% | 0.0% |
| Day +8 | 53 | +0.9% | -1.7% to +3.4% | 64% | +0.3% to +2.4% | +0.3% |
| Day +9 | 53 | +1.3% | -2.2% to +4.4% | 60% | -0.1% to +2.7% | 0.0% |
| Day +10 | 53 | +1.0% | -1.7% to +4.4% | 57% | -0.0% to +3.3% | 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 | 11% |
| Gamma max crosses | 20 |
| Delta neutral crosses | 12 |
| Prior-year sessions closer to gamma max | 55.6% of 252 |
| Prior-year sessions closer to delta neutral | 31.3% of 252 |
| Open interest percentile (1y) | 81th |
| Daily open interest change versus prior year | -0.83σ (-23,982 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +2.9% |
| Open interest change, 21 sessions | -10.9% |
| History available | Dec 1, 2020 → Oct 2, 2026 |
Recent crosses
- closed above delta neutral at 158.71 vs 153.71 (+3.2%)
- closed below delta neutral at 151.59 vs 152.46 (-0.6%)
- closed above delta neutral at 159.02 vs 151.76 (+4.6%)
- closed below delta neutral at 143.50 vs 149.62 (-4.3%)
- closed above delta neutral at 154.29 vs 152.54 (+1.1%)
- closed below delta neutral at 152.52 vs 155.66 (-2.1%)
- closed above delta neutral at 159.93 vs 153.67 (+3.9%)
- closed below delta neutral at 154.01 vs 160.06 (-3.9%)
- closed above delta neutral at 162.41 vs 162.19 (+0.1%)
- closed below delta neutral at 174.44 vs 175.54 (-0.6%)
In today's screens
Neighbours by open interest
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Canonical source: https://halfonadouble.com/stock/GLW
Questions people ask about GLW
Where is GLW's gamma max today?
As of Oct 2, 2026, the gamma max for GLW is 180.82, +10.1% from the 164.16 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 GLW above or below its delta neutral price?
GLW closed above delta neutral: 164.16 against a delta neutral price of 153.64. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does GLW have?
497,478 contracts of open interest across 1,240 listed contracts on Oct 2, 2026, -4.6% 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.