# GIS: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 33.13 |
| Delta neutral (USD/share) | 35.35 |
| Gamma neutral (USD/share) | 35.38 |
| Gamma max (USD/share) | 42.92 |
| Open interest (contracts) | 205,980 |
| Nearest-expiration max pain (USD/share) | 35.00 (2026-11-20) |
| All-expiration max pain (USD/share) | 35.00 |
| Net gamma exposure | -2,768,266 |
| Confirmed GEX flip (USD/share) | 35.38 |
| Call wall (USD/share) | 35.00 |
| Put wall (USD/share) | 35.00 |
| Put/call open-interest ratio | 0.87 |
| Options catalyst-intensity score (0–100) | 42.5 |
| Options directional score (-100 to +100) | -9.0 |
| IV rank | 82.0 |
| Front-minus-back IV | -1.6 pp |
| Front 25-delta risk reversal | 4.0 pp |
| Call OI change, 1 session | -34,388 contracts · -23.8% |
| Put OI change, 1 session | -8,668 contracts · -8.3% |
| Call minus put OI growth, 1 session | -15.5 pp |
| Call OI change, 5 sessions | -32,098 contracts · -22.5% |
| Put OI change, 5 sessions | -20,714 contracts · -17.8% |
| Call minus put OI growth, 5 sessions | -4.7 pp |
| Daily call OI change surprise | -5.62σ (252 prior changes) |
| Daily put OI change surprise | -1.79σ (252 prior changes) |
| Daily call-minus-put growth surprise | -4.29σ (252 prior changes) |
| Daily open interest change (contracts) | -43,056 |
| Daily open interest change z-score (prior 252) | -4.11σ (252 prior changes) |
| Gamma max distance from close | +29.6% |
| Delta neutral distance from close | +6.7% |
| Prior-year sessions closer to gamma max | 91.3% of 252 |
| Prior-year sessions closer to delta neutral | 72.6% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 16 | +0.1% | -0.2% to +0.4% | 56% | -0.2% to +0.3% | 0.0% |
| above | Day +3 | 16 | -0.9% | -2.1% to +1.1% | 44% | -2.1% to +1.1% | 0.0% |
| above | Day +5 | 16 | +0.2% | -2.3% to +1.6% | 56% | -1.8% to +1.4% | 0.0% |
| above | Day +10 | 16 | +0.5% | -3.0% to +2.3% | 50% | -2.5% to +2.2% | 0.0% |
| below | Day +1 | 16 | -0.3% | -0.6% to +0.6% | 44% | -0.6% to +0.5% | 0.0% |
| below | Day +3 | 16 | +0.6% | -0.5% to +1.7% | 63% | -0.5% to +1.5% | 0.0% |
| below | Day +5 | 16 | -0.7% | -2.8% to +1.6% | 38% | -2.6% to +1.3% | 0.0% |
| below | Day +10 | 16 | +0.1% | -1.8% to +2.1% | 50% | -1.8% to +2.0% | 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/GIS.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/GIS.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/GIS.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).