# ARKK: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 81.65 |
| Delta neutral (USD/share) | 85.65 |
| Gamma neutral (USD/share) | 92.41 |
| Gamma max (USD/share) | 106.04 |
| Open interest (contracts) | 510,571 |
| Nearest-expiration max pain (USD/share) | 88.00 (2026-10-23) |
| All-expiration max pain (USD/share) | 84.00 |
| Net gamma exposure | -24,970,596 |
| Confirmed GEX flip (USD/share) | 92.41 |
| Call wall (USD/share) | 85.00 |
| Put wall (USD/share) | 80.00 |
| Put/call open-interest ratio | 1.96 |
| Options catalyst-intensity score (0–100) | 55.2 |
| Options directional score (-100 to +100) | -19.3 |
| IV rank | 100.0 |
| Front-minus-back IV | 1.7 pp |
| Front 25-delta risk reversal | 1.5 pp |
| Call OI change, 1 session | -52,856 contracts · -23.5% |
| Put OI change, 1 session | -49,787 contracts · -12.8% |
| Call minus put OI growth, 1 session | -10.6 pp |
| Call OI change, 5 sessions | -34,231 contracts · -16.6% |
| Put OI change, 5 sessions | -30,821 contracts · -8.4% |
| Call minus put OI growth, 5 sessions | -8.2 pp |
| Daily call OI change surprise | -2.47σ (252 prior changes) |
| Daily put OI change surprise | -1.15σ (252 prior changes) |
| Daily call-minus-put growth surprise | -1.98σ (252 prior changes) |
| Daily open interest change (contracts) | -102,643 |
| Daily open interest change z-score (prior 252) | -1.66σ (252 prior changes) |
| Gamma max distance from close | +29.9% |
| Delta neutral distance from close | +4.9% |
| Prior-year sessions closer to gamma max | 87.3% of 252 |
| Prior-year sessions closer to delta neutral | 80.6% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 18 | +0.7% | -0.4% to +1.5% | 67% | -0.1% to +1.5% | 0.0% |
| above | Day +3 | 18 | +1.4% | -1.0% to +2.4% | 67% | -0.6% to +2.2% | 0.0% |
| above | Day +5 | 18 | -0.2% | -1.9% to +2.5% | 50% | -1.8% to +1.3% | 0.0% |
| above | Day +10 | 18 | +2.7% | -1.5% to +6.4% | 67% | -0.7% to +6.4% | 0.0% |
| below | Day +1 | 16 | -0.6% | -1.7% to +1.0% | 31% | -1.7% to +0.9% | 0.0% |
| below | Day +3 | 16 | -0.5% | -2.8% to +2.1% | 38% | -2.6% to +1.5% | 0.0% |
| below | Day +5 | 16 | +1.5% | -4.6% to +2.8% | 56% | -3.3% to +2.5% | 0.0% |
| below | Day +10 | 16 | +2.3% | -1.8% to +6.6% | 56% | -1.6% to +6.5% | 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/ARKK.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/ARKK.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/ARKK.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).