# GTLB: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 49.78 |
| Delta neutral (USD/share) | 39.33 |
| Gamma neutral (USD/share) | 34.30 |
| Gamma max (USD/share) | 52.60 |
| Open interest (contracts) | 198,756 |
| Nearest-expiration max pain (USD/share) | 48.00 (2026-10-09) |
| All-expiration max pain (USD/share) | 37.50 |
| Net gamma exposure | 6,958,511 |
| Confirmed GEX flip (USD/share) | 34.30 |
| Call wall (USD/share) | 50.00 |
| Put wall (USD/share) | 27.50 |
| Put/call open-interest ratio | 0.65 |
| Options catalyst-intensity score (0–100) | 62.0 |
| Options directional score (-100 to +100) | 7.2 |
| IV rank | 64.6 |
| Front ATM IV | +55.5% |
| Front-minus-back IV | 1.0 pp |
| Front expected move | +7.7% |
| Front ATM straddle / spot | +5.1% |
| Front 25-delta risk reversal | -2.6 pp |
| Call OI change, 1 session | -9,828 contracts · -7.6% |
| Put OI change, 1 session | -276 contracts · -0.4% |
| Call minus put OI growth, 1 session | -7.2 pp |
| Call OI change, 5 sessions | -2,773 contracts · -2.3% |
| Put OI change, 5 sessions | -1,569 contracts · -2.0% |
| Call minus put OI growth, 5 sessions | -0.3 pp |
| Daily call OI change surprise | -0.86σ (252 prior changes) |
| Daily put OI change surprise | -0.09σ (252 prior changes) |
| Daily call-minus-put growth surprise | -1.45σ (252 prior changes) |
| Daily open interest change (contracts) | -10,104 |
| Daily open interest change z-score (prior 252) | -0.70σ (252 prior changes) |
| Gamma max distance from close | +5.7% |
| Delta neutral distance from close | -21.0% |
| Prior-year sessions closer to gamma max | 16.3% of 252 |
| Prior-year sessions closer to delta neutral | 89.7% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 25 | +0.1% | -2.1% to +2.7% | 60% | -1.8% to +1.6% | 0.0% |
| above | Day +3 | 25 | +0.1% | -1.3% to +0.9% | 60% | -0.8% to +0.6% | 0.0% |
| above | Day +5 | 25 | -1.4% | -4.7% to +1.8% | 48% | -4.6% to +1.5% | 0.0% |
| above | Day +10 | 25 | -1.1% | -5.8% to +5.2% | 40% | -4.3% to +4.9% | 0.0% |
| below | Day +1 | 26 | +0.3% | -1.6% to +1.9% | 54% | -1.0% to +1.7% | 0.0% |
| below | Day +3 | 26 | +0.7% | -3.2% to +2.0% | 54% | -1.5% to +1.5% | 0.0% |
| below | Day +5 | 26 | +1.2% | -2.0% to +7.1% | 65% | -0.3% to +5.0% | 0.0% |
| below | Day +10 | 26 | +0.4% | -5.6% to +5.0% | 54% | -1.1% to +4.1% | 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/GTLB.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/GTLB.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/GTLB.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).