CPER max pain, gamma exposure (GEX) & options open interest
As of close · rank #633 by open interest · 1,394 sessions of history since Dec 1, 2020
CPER's nearest-expiration max pain is 39.00 for 2026-10-16, its GEX flip is 23.90, net GEX is 8,088,372, its put/call open-interest ratio is 0.27. 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 -178.2 pp · OI change 0.13σ · front IV premium -0.0 pp
CPER closed 7.1% below its gamma max of 42.34. It is 13.8% above the delta neutral price of 34.06. Total open interest is 101,436, +0.9% versus the previous session. Its options catalyst-intensity score is 54.2 out of 100, led by 25Δ risk reversal -178.2 pp, OI change 0.13σ, front IV premium -0.0 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 | +1,055 contracts · +1.3% |
| Put OI change, 1 session | -114 contracts · -0.5% |
| Call minus put OI growth, 1 session | +1.9 pp |
| Call OI change, 5 sessions | +3,336 contracts · +4.3% |
| Put OI change, 5 sessions | +1,169 contracts · +5.8% |
| Call minus put OI growth, 5 sessions | -1.5 pp |
| Daily call OI change surprise | +0.21σ (252 prior changes) |
| Daily put OI change surprise | -0.15σ (252 prior changes) |
| Daily call-minus-put growth surprise | +0.39σ (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 44 completed Day +10 paths · latest Aug 6, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 44 | +0.0% | -1.4% to +1.0% | 50% | -0.2% to +0.7% | 0.0% |
| Day +2 | 44 | -0.1% | -1.7% to +1.3% | 45% | -1.1% to +1.0% | 0.0% |
| Day +3 | 44 | -0.2% | -1.4% to +1.5% | 43% | -1.0% to +0.3% | 0.0% |
| Day +4 | 44 | +0.4% | -2.4% to +2.4% | 52% | -1.8% to +1.1% | 0.0% |
| Day +5 | 44 | +0.5% | -2.3% to +2.6% | 52% | -1.0% to +1.6% | 0.0% |
| Day +6 | 44 | +0.8% | -1.7% to +3.5% | 59% | -0.1% to +2.3% | 0.0% |
| Day +7 | 44 | +0.8% | -1.5% to +4.0% | 57% | -0.4% to +2.7% | 0.0% |
| Day +8 | 44 | +0.5% | -1.6% to +3.7% | 55% | -0.7% to +1.7% | 0.0% |
| Day +9 | 44 | +0.9% | -2.0% to +4.6% | 61% | -0.1% to +2.4% | 0.0% |
| Day +10 | 44 | +0.2% | -2.1% to +5.0% | 55% | -1.0% to +1.9% | 0.0% |
Crosses above gamma max 46 completed Day +10 paths · latest Aug 5, 2026
| Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
|---|---|---|---|---|---|---|
| Day +1 | 46 | -0.1% | -0.5% to +0.6% | 43% | -0.3% to +0.2% | 0.0% |
| Day +2 | 46 | +0.1% | -1.9% to +1.3% | 50% | -1.0% to +0.8% | 0.0% |
| Day +3 | 46 | -0.4% | -1.9% to +1.9% | 48% | -0.8% to +1.3% | 0.0% |
| Day +4 | 46 | +0.2% | -2.2% to +1.7% | 52% | -0.8% to +1.2% | 0.0% |
| Day +5 | 46 | +0.1% | -2.1% to +2.9% | 50% | -1.1% to +1.5% | 0.0% |
| Day +6 | 46 | +0.4% | -2.4% to +3.3% | 54% | -1.4% to +2.3% | 0.0% |
| Day +7 | 46 | +1.1% | -2.0% to +4.8% | 54% | -1.0% to +2.9% | 0.0% |
| Day +8 | 46 | +1.4% | -2.2% to +4.9% | 52% | -1.0% to +3.3% | 0.0% |
| Day +9 | 46 | +0.2% | -2.3% to +5.2% | 50% | -1.2% to +3.2% | 0.0% |
| Day +10 | 46 | -0.6% | -2.5% to +5.3% | 46% | -1.7% to +4.1% | 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 | 27% |
| Gamma max crosses | 23 |
| Delta neutral crosses | 0 |
| Prior-year sessions closer to gamma max | 89.7% of 252 |
| Prior-year sessions closer to delta neutral | 0.4% of 252 |
| Open interest percentile (1y) | 54th |
| Daily open interest change versus prior year | +0.13σ (941 contracts; 252 prior changes) |
| Open interest change, 5 sessions | +4.6% |
| Open interest change, 21 sessions | +4.3% |
| History available | Dec 1, 2020 → Oct 2, 2026 |
Recent crosses
- closed below gamma max at 40.76 vs 41.13 (-0.9%)
- closed above gamma max at 40.85 vs 40.68 (+0.4%)
- closed below gamma max at 38.81 vs 38.94 (-0.3%)
- closed above gamma max at 38.86 vs 38.35 (+1.3%)
- closed below gamma max at 39.55 vs 39.58 (-0.1%)
- closed above gamma max at 39.65 vs 39.58 (+0.2%)
- closed below gamma max at 38.08 vs 39.40 (-3.5%)
- closed above gamma max at 39.73 vs 39.40 (+0.8%)
- closed below gamma max at 39.42 vs 39.88 (-1.2%)
- closed above gamma max at 39.96 vs 39.94 (+0.1%)
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/CPER
Questions people ask about CPER
Where is CPER's gamma max today?
As of Oct 2, 2026, the gamma max for CPER is 42.34, +7.1% from the 39.52 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 CPER above or below its delta neutral price?
CPER closed above delta neutral: 39.52 against a delta neutral price of 34.06. The delta neutral price is where the summed delta of the whole chain is zero; the definition.
How much open interest does CPER have?
101,436 contracts of open interest across 250 listed contracts on Oct 2, 2026, +0.9% 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.