# STX: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 848.99 |
| Delta neutral (USD/share) | 838.73 |
| Gamma neutral (USD/share) | 862.28 |
| Gamma max (USD/share) | 1,049.51 |
| Open interest (contracts) | 244,201 |
| Nearest-expiration max pain (USD/share) | 890.00 (2026-10-09) |
| All-expiration max pain (USD/share) | 770.00 |
| Net gamma exposure | -565,553 |
| Confirmed GEX flip (USD/share) | 862.28 |
| Call wall (USD/share) | 900.00 |
| Put wall (USD/share) | 800.00 |
| Put/call open-interest ratio | 1.63 |
| Options catalyst-intensity score (0–100) | 53.0 |
| Options directional score (-100 to +100) | -16.9 |
| IV rank | 86.1 |
| Front ATM IV | +65.7% |
| Front-minus-back IV | -4.2 pp |
| Front expected move | +9.1% |
| Front ATM straddle / spot | +6.9% |
| Front 25-delta risk reversal | -1.8 pp |
| Call OI change, 1 session | -7,318 contracts · -7.3% |
| Put OI change, 1 session | -8,647 contracts · -5.4% |
| Call minus put OI growth, 1 session | -1.9 pp |
| Call OI change, 5 sessions | +2,721 contracts · +3.0% |
| Put OI change, 5 sessions | +3,172 contracts · +2.1% |
| Call minus put OI growth, 5 sessions | +0.9 pp |
| Daily call OI change surprise | -1.02σ (249 prior changes) |
| Daily put OI change surprise | -1.04σ (249 prior changes) |
| Daily call-minus-put growth surprise | -0.60σ (249 prior changes) |
| Daily open interest change (contracts) | -15,965 |
| Daily open interest change z-score (prior 252) | -1.06σ (252 prior changes) |
| Gamma max distance from close | +23.6% |
| Delta neutral distance from close | -1.2% |
| Prior-year sessions closer to gamma max | 88.1% of 252 |
| Prior-year sessions closer to delta neutral | 6.3% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 33 | +0.9% | -0.6% to +1.9% | 58% | -0.1% to +1.3% | 0.0% |
| above | Day +3 | 33 | +1.3% | -1.5% to +3.0% | 64% | -0.0% to +2.3% | 0.0% |
| above | Day +5 | 33 | +1.3% | -3.8% to +4.1% | 58% | -1.8% to +3.4% | 0.0% |
| above | Day +10 | 33 | +1.1% | -4.9% to +8.3% | 55% | -2.4% to +5.7% | 0.0% |
| below | Day +1 | 33 | +0.3% | -0.8% to +0.8% | 55% | -0.4% to +0.6% | 0.0% |
| below | Day +3 | 33 | +0.2% | -3.5% to +2.3% | 55% | -2.3% to +1.8% | 0.0% |
| below | Day +5 | 33 | +1.6% | -2.8% to +3.8% | 64% | -0.4% to +2.6% | 0.0% |
| below | Day +10 | 33 | +0.2% | -2.2% to +7.9% | 52% | -1.6% to +2.9% | 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/STX.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/STX.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/STX.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).