CORN max pain, gamma exposure (GEX) & options open interest
As of close · rank #549 by open interest · 1,394 sessions of history since Dec 1, 2020
CORN's nearest-expiration max pain is 20.00 for 2026-10-16, net GEX is 17,267,957, its put/call open-interest ratio is 0.05. 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 · front IV premium 3.9 pp · 25Δ risk reversal -12.9 pp
CORN closed 5.8% below its gamma max of 19.95. It is 87.8% above the delta neutral price of 2.30. Total open interest is 129,041, +0.0% versus the previous session. Its options catalyst-intensity score is 53.5 out of 100, led by IV rank 100, front IV premium 3.9 pp, 25Δ risk reversal -12.9 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 | +254 contracts · +0.2% |
| Put OI change, 1 session | -228 contracts · -3.3% |
| Call minus put OI growth, 1 session | +3.5 pp |
| Call OI change, 5 sessions | +1,518 contracts · +1.3% |
| Put OI change, 5 sessions | -705 contracts · -9.6% |
| Call minus put OI growth, 5 sessions | +10.9 pp |
| Daily call OI change surprise | -0.02σ (252 prior changes) |
| Daily put OI change surprise | -0.53σ (252 prior changes) |
| Daily call-minus-put growth surprise | — (148 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 46 completed Day +10 paths · latest Sep 2, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 46 | +0.5% | -0.4% to +1.0% | 63% | 0.0% to +0.9% | 0.0% |
| Day +2 | 46 | +0.5% | -1.1% to +1.5% | 57% | -0.5% to +0.8% | 0.0% |
| Day +3 | 46 | +1.0% | -1.4% to +2.4% | 57% | -0.7% to +1.9% | 0.0% |
| Day +4 | 46 | +0.9% | -1.5% to +3.1% | 61% | -0.3% to +2.5% | 0.0% |
| Day +5 | 46 | +0.3% | -1.9% to +3.2% | 57% | -1.0% to +1.8% | 0.0% |
| Day +6 | 46 | +0.8% | -1.6% to +3.2% | 61% | -0.6% to +1.9% | 0.0% |
| Day +7 | 46 | +0.7% | -1.6% to +2.9% | 61% | -1.0% to +1.4% | 0.0% |
| Day +8 | 46 | +1.1% | -1.2% to +3.5% | 59% | -0.2% to +2.1% | 0.0% |
| Day +9 | 46 | +0.9% | -1.4% to +4.9% | 57% | -0.9% to +2.5% | 0.0% |
| Day +10 | 46 | +1.1% | -1.8% to +4.4% | 61% | -0.7% to +2.7% | 0.0% |
Crosses above gamma max 44 completed Day +10 paths · latest Sep 1, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 44 | +0.1% | -0.7% to +1.1% | 57% | -0.2% to +0.6% | 0.0% |
| Day +2 | 44 | +0.3% | -1.4% to +1.4% | 55% | -0.5% to +0.6% | 0.0% |
| Day +3 | 44 | +0.7% | -0.9% to +1.9% | 61% | -0.2% to +1.4% | 0.0% |
| Day +4 | 44 | +0.7% | -1.0% to +1.8% | 61% | -0.1% to +1.3% | 0.0% |
| Day +5 | 44 | +0.5% | -0.8% to +2.3% | 64% | +0.1% to +1.6% | +0.1% |
| Day +6 | 44 | +0.5% | -1.3% to +2.8% | 61% | -0.2% to +2.2% | 0.0% |
| Day +7 | 44 | +0.4% | -1.5% to +3.7% | 57% | -0.3% to +1.6% | 0.0% |
| Day +8 | 44 | +0.9% | -1.9% to +3.6% | 61% | -0.6% to +2.5% | 0.0% |
| Day +9 | 44 | +1.1% | -1.3% to +3.1% | 61% | -0.2% to +2.3% | 0.0% |
| Day +10 | 44 | +1.2% | -1.6% to +4.2% | 66% | +0.2% to +2.5% | +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 | 8% |
| Gamma max crosses | 16 |
| Delta neutral crosses | 0 |
| Prior-year sessions closer to gamma max | 75.8% of 252 |
| Prior-year sessions closer to delta neutral | 92.9% of 252 |
| Open interest percentile (1y) | 52th |
| Daily open interest change versus prior year | -0.04σ (26 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +0.6% |
| Open interest change, 21 sessions | -1.2% |
| History available | Dec 1, 2020 → Oct 2, 2026 |
Recent crosses
- closed below gamma max at 20.22 vs 20.41 (-0.9%)
- closed above gamma max at 20.29 vs 20.06 (+1.1%)
- closed below gamma max at 18.42 vs 19.04 (-3.4%)
- closed above gamma max at 18.26 vs 18.05 (+1.2%)
- closed below gamma max at 17.91 vs 18.11 (-1.1%)
- closed above gamma max at 18.20 vs 18.09 (+0.6%)
- closed below gamma max at 18.51 vs 19.13 (-3.4%)
- closed above gamma max at 18.80 vs 18.66 (+0.7%)
- closed below gamma max at 18.20 vs 18.89 (-3.8%)
- closed above gamma max at 18.19 vs 17.96 (+1.2%)
In today's screens
Neighbours by open interest
Cite or embed this snapshot
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/CORN
Questions people ask about CORN
Where is CORN's gamma max today?
As of Oct 2, 2026, the gamma max for CORN is 19.95, +5.8% from the 18.85 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 CORN above or below its delta neutral price?
CORN closed above delta neutral: 18.85 against a delta neutral price of 2.30. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does CORN have?
129,041 contracts of open interest across 98 listed contracts on Oct 2, 2026, +0.0% 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.