# WDC: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 332.00 |
| Delta neutral (USD/share) | 380.16 |
| Gamma neutral (USD/share) | 378.49 |
| Gamma max (USD/share) | 505.86 |
| Open interest (contracts) | 502,274 |
| Nearest-expiration max pain (USD/share) | 385.00 (2026-10-23) |
| All-expiration max pain (USD/share) | 397.50 |
| Net gamma exposure | -5,539,319 |
| Confirmed GEX flip (USD/share) | 378.49 |
| Call wall (USD/share) | 340.00 |
| Put wall (USD/share) | 300.00 |
| Put/call open-interest ratio | 1.28 |
| Options catalyst-intensity score (0–100) | 68.1 |
| Options directional score (-100 to +100) | -19.0 |
| IV rank | 100.0 |
| Front-minus-back IV | 34.8 pp |
| Front 25-delta risk reversal | 3.0 pp |
| Call OI change, 1 session | -38,473 contracts · -14.9% |
| Put OI change, 1 session | -30,062 contracts · -9.6% |
| Call minus put OI growth, 1 session | -5.2 pp |
| Call OI change, 5 sessions | +3,391 contracts · +1.6% |
| Put OI change, 5 sessions | -10,579 contracts · -3.6% |
| Call minus put OI growth, 5 sessions | +5.2 pp |
| Daily call OI change surprise | -2.76σ (252 prior changes) |
| Daily put OI change surprise | -2.08σ (252 prior changes) |
| Daily call-minus-put growth surprise | -1.72σ (252 prior changes) |
| Daily open interest change (contracts) | -68,535 |
| Daily open interest change z-score (prior 252) | -2.46σ (252 prior changes) |
| Gamma max distance from close | +52.4% |
| Delta neutral distance from close | +14.5% |
| Prior-year sessions closer to gamma max | 100.0% of 252 |
| Prior-year sessions closer to delta neutral | 84.1% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 46 | +0.0% | -1.8% to +1.5% | 52% | -1.1% to +1.0% | 0.0% |
| above | Day +3 | 46 | +0.5% | -1.3% to +4.5% | 57% | -0.5% to +1.9% | 0.0% |
| above | Day +5 | 46 | +1.9% | -3.4% to +6.3% | 57% | -1.4% to +3.4% | 0.0% |
| above | Day +10 | 46 | +0.9% | -4.2% to +10.3% | 52% | -2.0% to +6.4% | 0.0% |
| below | Day +1 | 44 | +0.5% | -1.5% to +1.7% | 57% | -0.4% to +1.0% | 0.0% |
| below | Day +3 | 44 | +2.6% | -1.2% to +3.5% | 68% | +0.8% to +3.3% | +0.8% |
| below | Day +5 | 44 | +2.8% | -3.7% to +6.6% | 57% | -0.5% to +5.5% | 0.0% |
| below | Day +10 | 44 | +2.8% | -1.0% to +10.3% | 68% | +1.3% to +4.7% | +1.3% |

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/WDC.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/WDC.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/WDC.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).