# UMAC: options-positioning snapshot

Canonical: https://halfonadouble.com/stock/UMAC
Data through: 2026-10-23 close
Publisher: Half on a Double

| Published field | Value |
| --- | --- |
| Close (USD/share) | 17.02 |
| Delta neutral (USD/share) | 16.99 |
| Gamma neutral (USD/share) | 16.60 |
| Gamma max (USD/share) | 26.45 |
| Open interest (contracts) | 101,022 |
| Nearest-expiration max pain (USD/share) | 20.00 (2026-10-30) |
| All-expiration max pain (USD/share) | 20.00 |
| Net gamma exposure | 101,923 |
| Confirmed GEX flip (USD/share) | 16.60 |
| Call wall (USD/share) | 25.00 |
| Put wall (USD/share) | 20.00 |
| Put/call open-interest ratio | 0.64 |
| Options catalyst-intensity score (0–100) | 55.7 |
| Options directional score (-100 to +100) | 13.3 |
| IV rank | 58.8 |
| Front-minus-back IV | 2.1 pp |
| Front 25-delta risk reversal | -2.7 pp |
| Call OI change, 1 session | -4,679 contracts · -7.1% |
| Put OI change, 1 session | -1,259 contracts · -3.1% |
| Call minus put OI growth, 1 session | -4.0 pp |
| Call OI change, 5 sessions | +2,116 contracts · +3.6% |
| Put OI change, 5 sessions | +846 contracts · +2.2% |
| Call minus put OI growth, 5 sessions | +1.4 pp |
| Daily call OI change surprise | -1.01σ (252 prior changes) |
| Daily put OI change surprise | -0.47σ (252 prior changes) |
| Daily call-minus-put growth surprise | -0.64σ (252 prior changes) |
| Daily open interest change (contracts) | -5,938 |
| Daily open interest change z-score (prior 252) | -0.84σ (252 prior changes) |
| Gamma max distance from close | +55.4% |
| Delta neutral distance from close | -0.1% |
| Prior-year sessions closer to gamma max | 97.6% of 252 |
| Prior-year sessions closer to delta neutral | 0.0% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 21 | -1.9% | -8.5% to +5.0% | 38% | -6.1% to +4.3% | 0.0% |
| above | Day +3 | 21 | -3.4% | -15.3% to +2.5% | 33% | -9.9% to +2.3% | 0.0% |
| above | Day +5 | 21 | -2.6% | -16.5% to +10.7% | 38% | -13.3% to +9.4% | 0.0% |
| above | Day +10 | 21 | -7.6% | -13.3% to +22.2% | 43% | -10.4% to +17.8% | 0.0% |
| below | Day +1 | 19 | +2.8% | -1.7% to +9.5% | 68% | -0.6% to +7.0% | 0.0% |
| below | Day +3 | 19 | +0.5% | -12.0% to +12.9% | 58% | -11.0% to +11.8% | 0.0% |
| below | Day +5 | 19 | -10.8% | -16.8% to +14.9% | 42% | -16.2% to +12.6% | 0.0% |
| below | Day +10 | 19 | -7.5% | -14.6% to +17.1% | 37% | -14.4% to +10.0% | 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/UMAC.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/UMAC.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/UMAC.json?date=2026-10-23&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).