# IAU: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 78.34 |
| Delta neutral (USD/share) | 71.42 |
| Gamma neutral (USD/share) | 33.46 |
| Gamma max (USD/share) | 89.89 |
| Open interest (contracts) | 176,060 |
| Nearest-expiration max pain (USD/share) | 78.00 (2026-10-23) |
| All-expiration max pain (USD/share) | 75.00 |
| Net gamma exposure | 11,087,981 |
| Confirmed GEX flip (USD/share) | 33.46 |
| Call wall (USD/share) | 80.00 |
| Put wall (USD/share) | 75.00 |
| Put/call open-interest ratio | 0.18 |
| Options catalyst-intensity score (0–100) | 46.6 |
| Options directional score (-100 to +100) | 22.1 |
| IV rank | 100.0 |
| Front-minus-back IV | 0.8 pp |
| Front 25-delta risk reversal | 2.1 pp |
| Call OI change, 1 session | -49,956 contracts · -25.2% |
| Put OI change, 1 session | -5,712 contracts · -17.2% |
| Call minus put OI growth, 1 session | -7.9 pp |
| Call OI change, 5 sessions | -43,971 contracts · -22.8% |
| Put OI change, 5 sessions | -5,294 contracts · -16.2% |
| Call minus put OI growth, 5 sessions | -6.7 pp |
| Daily call OI change surprise | -7.89σ (252 prior changes) |
| Daily put OI change surprise | -0.97σ (252 prior changes) |
| Daily call-minus-put growth surprise | -1.57σ (252 prior changes) |
| Daily open interest change (contracts) | -55,668 |
| Daily open interest change z-score (prior 252) | -5.12σ (252 prior changes) |
| Gamma max distance from close | +14.7% |
| Delta neutral distance from close | -8.8% |
| Prior-year sessions closer to gamma max | 99.2% of 252 |
| Prior-year sessions closer to delta neutral | 24.2% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 32 | +0.5% | -0.6% to +1.1% | 69% | +0.1% to +0.7% | +0.1% |
| above | Day +3 | 32 | +0.6% | -0.6% to +2.1% | 63% | -0.3% to +1.5% | 0.0% |
| above | Day +5 | 32 | +1.7% | +0.1% to +2.9% | 75% | +0.7% to +2.7% | +0.7% |
| above | Day +10 | 32 | +1.9% | -0.7% to +5.1% | 63% | -0.2% to +3.7% | 0.0% |
| below | Day +1 | 31 | +0.0% | -0.6% to +0.6% | 52% | -0.5% to +0.3% | 0.0% |
| below | Day +3 | 31 | +0.7% | -0.6% to +2.3% | 61% | -0.2% to +1.9% | 0.0% |
| below | Day +5 | 31 | +0.8% | -1.1% to +2.9% | 55% | -0.6% to +2.2% | 0.0% |
| below | Day +10 | 31 | +1.4% | -1.4% to +5.2% | 68% | +0.1% to +3.9% | +0.1% |

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