# VLO: options-positioning snapshot

Canonical: https://halfonadouble.com/stock/VLO
Data through: 2026-10-16 close
Publisher: Half on a Double

| Published field | Value |
| --- | --- |
| Close (USD/share) | 444.71 |
| Delta neutral (USD/share) | 412.59 |
| Gamma neutral (USD/share) | 456.26 |
| Gamma max (USD/share) | 512.08 |
| Open interest (contracts) | 155,275 |
| Nearest-expiration max pain (USD/share) | 430.00 (2026-10-23) |
| All-expiration max pain (USD/share) | 350.00 |
| Net gamma exposure | -689,563 |
| Confirmed GEX flip (USD/share) | 456.26 |
| Call wall (USD/share) | 390.00 |
| Put wall (USD/share) | 400.00 |
| Put/call open-interest ratio | 1.41 |
| Options catalyst-intensity score (0–100) | 54.4 |
| Options directional score (-100 to +100) | -19.4 |
| IV rank | 82.9 |
| Front-minus-back IV | 11.1 pp |
| Front 25-delta risk reversal | 2.0 pp |
| Call OI change, 1 session | -11,039 contracts · -14.6% |
| Put OI change, 1 session | -22,675 contracts · -20.0% |
| Call minus put OI growth, 1 session | +5.3 pp |
| Call OI change, 5 sessions | -4,497 contracts · -6.5% |
| Put OI change, 5 sessions | -7,406 contracts · -7.5% |
| Call minus put OI growth, 5 sessions | +1.0 pp |
| Daily call OI change surprise | -2.60σ (252 prior changes) |
| Daily put OI change surprise | -4.04σ (252 prior changes) |
| Daily call-minus-put growth surprise | +1.10σ (252 prior changes) |
| Daily open interest change (contracts) | -33,714 |
| Daily open interest change z-score (prior 252) | -3.66σ (252 prior changes) |
| Gamma max distance from close | +15.1% |
| Delta neutral distance from close | -7.2% |
| Prior-year sessions closer to gamma max | 98.0% of 252 |
| Prior-year sessions closer to delta neutral | 27.8% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 37 | +0.5% | -1.7% to +1.2% | 57% | -1.0% to +0.7% | 0.0% |
| above | Day +3 | 37 | +1.2% | -3.2% to +3.2% | 59% | -2.2% to +2.4% | 0.0% |
| above | Day +5 | 37 | +0.5% | -2.9% to +3.7% | 57% | -2.2% to +2.7% | 0.0% |
| above | Day +10 | 36 | +1.0% | -3.7% to +5.4% | 53% | -2.9% to +4.1% | 0.0% |
| below | Day +1 | 37 | -0.3% | -1.5% to +1.4% | 43% | -1.1% to +0.7% | 0.0% |
| below | Day +3 | 37 | +0.3% | -3.0% to +2.8% | 51% | -0.6% to +1.1% | 0.0% |
| below | Day +5 | 37 | +0.2% | -3.5% to +2.8% | 51% | -2.3% to +2.1% | 0.0% |
| below | Day +10 | 36 | +1.7% | -3.0% to +5.7% | 61% | -1.7% to +3.5% | 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/VLO.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/VLO.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/VLO.json?date=2026-10-16&public_schema=4)

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).