# PFE: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 29.57 |
| Delta neutral (USD/share) | 26.95 |
| Gamma neutral (USD/share) | 26.66 |
| Gamma max (USD/share) | 30.30 |
| Open interest (contracts) | 2,111,722 |
| Nearest-expiration max pain (USD/share) | 28.00 (2026-10-23) |
| All-expiration max pain (USD/share) | 27.00 |
| Net gamma exposure | 136,102,546 |
| Confirmed GEX flip (USD/share) | 26.66 |
| Call wall (USD/share) | 30.00 |
| Put wall (USD/share) | 25.00 |
| Put/call open-interest ratio | 0.85 |
| Options catalyst-intensity score (0–100) | 48.5 |
| Options directional score (-100 to +100) | 18.5 |
| IV rank | 86.8 |
| Front-minus-back IV | 0.3 pp |
| Front 25-delta risk reversal | -156.8 pp |
| Call OI change, 1 session | -158,107 contracts · -12.2% |
| Put OI change, 1 session | -64,450 contracts · -6.2% |
| Call minus put OI growth, 1 session | -6.0 pp |
| Call OI change, 5 sessions | -92,408 contracts · -7.5% |
| Put OI change, 5 sessions | -5,859 contracts · -0.6% |
| Call minus put OI growth, 5 sessions | -6.9 pp |
| Daily call OI change surprise | -1.98σ (252 prior changes) |
| Daily put OI change surprise | -1.20σ (252 prior changes) |
| Daily call-minus-put growth surprise | -2.95σ (252 prior changes) |
| Daily open interest change (contracts) | -222,557 |
| Daily open interest change z-score (prior 252) | -1.71σ (252 prior changes) |
| Gamma max distance from close | +2.5% |
| Delta neutral distance from close | -8.8% |
| Prior-year sessions closer to gamma max | 21.0% of 252 |
| Prior-year sessions closer to delta neutral | 98.8% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 22 | -0.3% | -1.0% to +1.0% | 45% | -0.9% to +0.9% | 0.0% |
| above | Day +3 | 21 | +0.8% | -1.2% to +1.7% | 57% | -0.9% to +1.6% | 0.0% |
| above | Day +5 | 21 | +1.4% | +0.0% to +3.4% | 76% | +0.3% to +2.8% | +0.3% |
| above | Day +10 | 21 | +4.3% | -3.6% to +6.2% | 62% | -2.3% to +5.1% | 0.0% |
| below | Day +1 | 22 | -0.2% | -0.9% to +0.9% | 41% | -0.5% to +0.8% | 0.0% |
| below | Day +3 | 22 | +0.9% | -1.2% to +2.3% | 68% | -0.8% to +1.7% | 0.0% |
| below | Day +5 | 22 | +0.9% | -3.2% to +3.1% | 59% | -1.8% to +2.9% | 0.0% |
| below | Day +10 | 22 | +1.2% | -4.7% to +5.8% | 59% | -4.4% to +5.3% | 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/PFE.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/PFE.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/PFE.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).