# STLA: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 4.40 |
| Delta neutral (USD/share) | 3.94 |
| Gamma neutral (USD/share) | 4.40 |
| Gamma max (USD/share) | 5.14 |
| Open interest (contracts) | 402,544 |
| Nearest-expiration max pain (USD/share) | 1.50 (2026-10-09) |
| All-expiration max pain (USD/share) | 5.00 |
| Net gamma exposure | 8,295,989 |
| Call wall (USD/share) | 5.00 |
| Put wall (USD/share) | 5.00 |
| Put/call open-interest ratio | 0.33 |
| Options catalyst-intensity score (0–100) | 60.3 |
| Options directional score (-100 to +100) | 34.4 |
| IV rank | 57.3 |
| Front ATM IV | +58.0% |
| Front-minus-back IV | -3.0 pp |
| Front expected move | +8.0% |
| Front ATM straddle / spot | +6.3% |
| Front 25-delta risk reversal | -77.0 pp |
| Call OI change, 1 session | +17,952 contracts · +6.3% |
| Put OI change, 1 session | +1,320 contracts · +1.3% |
| Call minus put OI growth, 1 session | +5.0 pp |
| Call OI change, 5 sessions | +32,095 contracts · +11.8% |
| Put OI change, 5 sessions | +2,748 contracts · +2.8% |
| Call minus put OI growth, 5 sessions | +9.0 pp |
| Daily call OI change surprise | +1.56σ (252 prior changes) |
| Daily put OI change surprise | +0.32σ (252 prior changes) |
| Daily call-minus-put growth surprise | +1.62σ (252 prior changes) |
| Daily open interest change (contracts) | 19,272 |
| Daily open interest change z-score (prior 252) | +1.27σ (252 prior changes) |
| Gamma max distance from close | +16.7% |
| Delta neutral distance from close | -10.5% |
| Prior-year sessions closer to gamma max | 24.2% of 252 |
| Prior-year sessions closer to delta neutral | 87.3% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 18 | -0.0% | -0.8% to +1.5% | 44% | -0.6% to +1.3% | 0.0% |
| above | Day +3 | 18 | +0.1% | -2.4% to +1.9% | 56% | -2.0% to +1.7% | 0.0% |
| above | Day +5 | 18 | -1.0% | -5.3% to +1.7% | 39% | -5.0% to +1.1% | 0.0% |
| above | Day +10 | 18 | -1.4% | -6.8% to +4.2% | 39% | -5.0% to +2.2% | 0.0% |
| below | Day +1 | 14 | -0.1% | -0.9% to +1.4% | 36% | -1.0% to +1.7% | 0.0% |
| below | Day +3 | 14 | -0.8% | -2.2% to +1.9% | 36% | -2.3% to +2.2% | 0.0% |
| below | Day +5 | 14 | -1.7% | -4.7% to +2.0% | 43% | -4.7% to +2.4% | 0.0% |
| below | Day +10 | 14 | -3.3% | -5.4% to +0.3% | 29% | -5.6% to +0.6% | 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/STLA.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/STLA.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/STLA.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).