# MPC: options-positioning snapshot

Canonical: https://halfonadouble.com/stock/MPC
Data through: 2026-10-02 close
Publisher: Half on a Double

| Published field | Value |
| --- | --- |
| Close (USD/share) | 422.33 |
| Delta neutral (USD/share) | 388.63 |
| Gamma neutral (USD/share) | 419.96 |
| Gamma max (USD/share) | 477.51 |
| Open interest (contracts) | 104,199 |
| Nearest-expiration max pain (USD/share) | 370.00 (2026-10-16) |
| All-expiration max pain (USD/share) | 340.00 |
| Net gamma exposure | 142,578 |
| Confirmed GEX flip (USD/share) | 419.96 |
| Call wall (USD/share) | 420.00 |
| Put wall (USD/share) | 350.00 |
| Put/call open-interest ratio | 1.17 |
| Options catalyst-intensity score (0–100) | 46.0 |
| Options directional score (-100 to +100) | -14.8 |
| IV rank | 20.1 |
| Front ATM IV | +48.3% |
| Front-minus-back IV | -3.5 pp |
| Front expected move | +9.4% |
| Front ATM straddle / spot | +7.3% |
| Front 25-delta risk reversal | -0.6 pp |
| Call OI change, 1 session | +1,649 contracts · +3.6% |
| Put OI change, 1 session | +1,706 contracts · +3.1% |
| Call minus put OI growth, 1 session | +0.4 pp |
| Call OI change, 5 sessions | +2,784 contracts · +6.1% |
| Put OI change, 5 sessions | +3,190 contracts · +6.0% |
| Call minus put OI growth, 5 sessions | +0.1 pp |
| Daily call OI change surprise | +0.67σ (252 prior changes) |
| Daily put OI change surprise | +0.83σ (252 prior changes) |
| Daily call-minus-put growth surprise | +0.16σ (252 prior changes) |
| Daily open interest change (contracts) | 3,355 |
| Daily open interest change z-score (prior 252) | +0.79σ (252 prior changes) |
| Gamma max distance from close | +13.1% |
| Delta neutral distance from close | -8.0% |
| Prior-year sessions closer to gamma max | 89.3% of 252 |
| Prior-year sessions closer to delta neutral | 20.6% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 73 | +0.0% | -1.2% to +1.0% | 51% | -0.7% to +0.4% | 0.0% |
| above | Day +3 | 73 | +0.8% | -2.0% to +2.2% | 60% | -0.2% to +1.6% | 0.0% |
| above | Day +5 | 73 | +0.4% | -1.9% to +3.6% | 53% | -0.6% to +1.6% | 0.0% |
| above | Day +10 | 73 | +0.7% | -3.6% to +5.5% | 56% | -1.2% to +2.6% | 0.0% |
| below | Day +1 | 73 | +0.8% | -0.5% to +1.6% | 59% | -0.0% to +1.1% | 0.0% |
| below | Day +3 | 73 | +0.8% | -1.5% to +3.0% | 59% | -0.2% to +1.8% | 0.0% |
| below | Day +5 | 73 | +1.2% | -1.8% to +3.3% | 60% | -0.1% to +2.3% | 0.0% |
| below | Day +10 | 73 | +1.5% | -2.4% to +6.2% | 58% | -0.4% to +3.8% | 0.0% |

Returns are close-to-close after the labelled number of subsequent trading sessions. Cohorts require gamma max to be within 10% of the close on both crossing sessions. Historical windows can overlap and are not independent observations, so interval coverage is not guaranteed.

- [Machine-readable snapshot](https://halfonadouble.com/api/v1/tickers/MPC.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/MPC.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/MPC.json?date=2026-10-02)

An em dash means unavailable, not zero. Values use the same display rounding as the HTML page. This is a current snapshot; full history and individual event paths are on the canonical page.

[Definitions and limitations](https://halfonadouble.com/methodology.md).