# GDS: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 23.08 |
| Delta neutral (USD/share) | 25.95 |
| Gamma neutral (USD/share) | 24.40 |
| Gamma max (USD/share) | 36.64 |
| Open interest (contracts) | 105,005 |
| Nearest-expiration max pain (USD/share) | 33.00 (2026-11-20) |
| All-expiration max pain (USD/share) | 30.00 |
| Net gamma exposure | -404,719 |
| Confirmed GEX flip (USD/share) | 24.40 |
| Call wall (USD/share) | 35.00 |
| Put wall (USD/share) | 25.00 |
| Put/call open-interest ratio | 0.61 |
| Options catalyst-intensity score (0–100) | 49.0 |
| Options directional score (-100 to +100) | 26.5 |
| IV rank | 95.2 |
| Front-minus-back IV | 2.7 pp |
| Front 25-delta risk reversal | -89.9 pp |
| Call OI change, 1 session | -11,308 contracts · -14.7% |
| Put OI change, 1 session | -4,382 contracts · -10.0% |
| Call minus put OI growth, 1 session | -4.8 pp |
| Call OI change, 5 sessions | -20,113 contracts · -23.5% |
| Put OI change, 5 sessions | -13,167 contracts · -25.0% |
| Call minus put OI growth, 5 sessions | +1.4 pp |
| Daily call OI change surprise | -2.17σ (252 prior changes) |
| Daily put OI change surprise | -1.47σ (252 prior changes) |
| Daily call-minus-put growth surprise | -0.55σ (252 prior changes) |
| Daily open interest change (contracts) | -15,690 |
| Daily open interest change z-score (prior 252) | -2.02σ (252 prior changes) |
| Gamma max distance from close | +58.8% |
| Delta neutral distance from close | +12.4% |
| Prior-year sessions closer to gamma max | 100.0% of 252 |
| Prior-year sessions closer to delta neutral | 57.1% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 26 | -0.4% | -2.7% to +1.4% | 42% | -1.8% to +0.8% | 0.0% |
| above | Day +3 | 26 | -0.6% | -2.6% to +3.6% | 38% | -1.9% to +1.8% | 0.0% |
| above | Day +5 | 26 | +1.1% | -5.4% to +3.9% | 54% | -4.7% to +2.9% | 0.0% |
| above | Day +10 | 26 | +0.0% | -3.6% to +9.3% | 50% | -1.0% to +8.0% | 0.0% |
| below | Day +1 | 26 | +1.8% | -1.2% to +4.0% | 62% | -0.6% to +2.9% | 0.0% |
| below | Day +3 | 26 | +0.5% | -4.6% to +4.1% | 54% | -2.7% to +2.2% | 0.0% |
| below | Day +5 | 26 | +0.2% | -4.1% to +5.6% | 50% | -2.6% to +3.6% | 0.0% |
| below | Day +10 | 26 | +3.7% | -7.7% to +13.1% | 62% | -3.8% to +6.9% | 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/GDS.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/GDS.csv)
- [Public aggregate analysis](https://halfonadouble.com/api/v1/analysis/GDS.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).