# ACN: options-positioning snapshot

Canonical: https://halfonadouble.com/stock/ACN
Data through: 2026-10-02 close
Publisher: Half on a Double

| Published field | Value |
| --- | --- |
| Close (USD/share) | 198.90 |
| Delta neutral (USD/share) | 187.17 |
| Gamma neutral (USD/share) | 185.27 |
| Gamma max (USD/share) | 230.20 |
| Open interest (contracts) | 256,624 |
| Nearest-expiration max pain (USD/share) | 195.00 (2026-10-09) |
| All-expiration max pain (USD/share) | 185.00 |
| Net gamma exposure | 4,769,753 |
| Confirmed GEX flip (USD/share) | 185.27 |
| Call wall (USD/share) | 200.00 |
| Put wall (USD/share) | 165.00 |
| Put/call open-interest ratio | 0.93 |
| Options catalyst-intensity score (0–100) | 66.9 |
| Options directional score (-100 to +100) | -5.0 |
| IV rank | 100.0 |
| Front ATM IV | +46.6% |
| Front-minus-back IV | 4.0 pp |
| Front expected move | +6.5% |
| Front ATM straddle / spot | +4.7% |
| Front 25-delta risk reversal | -3.1 pp |
| Call OI change, 1 session | -945 contracts · -0.7% |
| Put OI change, 1 session | -5,490 contracts · -4.2% |
| Call minus put OI growth, 1 session | +3.5 pp |
| Call OI change, 5 sessions | +17,328 contracts · +15.0% |
| Put OI change, 5 sessions | +15,671 contracts · +14.5% |
| Call minus put OI growth, 5 sessions | +0.6 pp |
| Daily call OI change surprise | -0.16σ (252 prior changes) |
| Daily put OI change surprise | -0.94σ (252 prior changes) |
| Daily call-minus-put growth surprise | +0.78σ (252 prior changes) |
| Daily open interest change (contracts) | -6,435 |
| Daily open interest change z-score (prior 252) | -0.56σ (252 prior changes) |
| Gamma max distance from close | +15.7% |
| Delta neutral distance from close | -5.9% |
| Prior-year sessions closer to gamma max | 69.0% of 252 |
| Prior-year sessions closer to delta neutral | 67.9% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 20 | -0.1% | -1.1% to +0.3% | 35% | -1.1% to +0.3% | 0.0% |
| above | Day +3 | 20 | -0.1% | -2.0% to +1.2% | 50% | -1.9% to +1.2% | 0.0% |
| above | Day +5 | 20 | -0.2% | -2.1% to +1.6% | 45% | -2.0% to +1.5% | 0.0% |
| above | Day +10 | 20 | -0.3% | -3.7% to +1.5% | 50% | -3.4% to +1.4% | 0.0% |
| below | Day +1 | 19 | -0.0% | -0.5% to +1.3% | 47% | -0.4% to +1.1% | 0.0% |
| below | Day +3 | 19 | +0.7% | -1.5% to +2.1% | 53% | -1.4% to +2.0% | 0.0% |
| below | Day +5 | 19 | +0.6% | -2.3% to +2.6% | 58% | -2.1% to +2.4% | 0.0% |
| below | Day +10 | 19 | -1.0% | -4.6% to +1.9% | 42% | -3.3% to +1.7% | 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/ACN.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/ACN.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/ACN.json?date=2026-10-02)

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).