# MDB: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 357.96 |
| Delta neutral (USD/share) | 300.22 |
| Gamma neutral (USD/share) | 310.53 |
| Gamma max (USD/share) | 417.56 |
| Open interest (contracts) | 273,354 |
| Nearest-expiration max pain (USD/share) | 350.00 (2026-10-09) |
| All-expiration max pain (USD/share) | 330.00 |
| Net gamma exposure | 5,142,134 |
| Confirmed GEX flip (USD/share) | 310.53 |
| Call wall (USD/share) | 360.00 |
| Put wall (USD/share) | 350.00 |
| Put/call open-interest ratio | 0.64 |
| Options catalyst-intensity score (0–100) | 64.2 |
| Options directional score (-100 to +100) | 11.8 |
| IV rank | 99.8 |
| Front ATM IV | +57.8% |
| Front-minus-back IV | 2.0 pp |
| Front expected move | +8.0% |
| Front ATM straddle / spot | +5.5% |
| Front 25-delta risk reversal | -6.0 pp |
| Call OI change, 1 session | -34,292 contracts · -17.1% |
| Put OI change, 1 session | -19,367 contracts · -15.4% |
| Call minus put OI growth, 1 session | -1.7 pp |
| Call OI change, 5 sessions | +35,290 contracts · +26.9% |
| Put OI change, 5 sessions | +29,301 contracts · +37.8% |
| Call minus put OI growth, 5 sessions | -11.0 pp |
| Daily call OI change surprise | -3.99σ (252 prior changes) |
| Daily put OI change surprise | -2.36σ (252 prior changes) |
| Daily call-minus-put growth surprise | -0.50σ (252 prior changes) |
| Daily open interest change (contracts) | -53,659 |
| Daily open interest change z-score (prior 252) | -3.34σ (252 prior changes) |
| Gamma max distance from close | +16.7% |
| Delta neutral distance from close | -16.1% |
| Prior-year sessions closer to gamma max | 68.7% of 252 |
| Prior-year sessions closer to delta neutral | 66.3% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 11 | -0.2% | -1.3% to +4.2% | 45% | -1.4% to +4.5% | 0.0% |
| above | Day +3 | 11 | +5.1% | -2.6% to +6.9% | 73% | -5.8% to +7.6% | 0.0% |
| above | Day +5 | 11 | +7.9% | -5.1% to +11.2% | 64% | -10.2% to +12.9% | 0.0% |
| above | Day +10 | 11 | +8.0% | -6.4% to +17.9% | 64% | -6.7% to +18.6% | 0.0% |
| below | Day +1 | 13 | -0.2% | -2.4% to +1.7% | 46% | -2.4% to +1.7% | 0.0% |
| below | Day +3 | 13 | +0.8% | -0.2% to +4.3% | 62% | -0.2% to +4.3% | 0.0% |
| below | Day +5 | 13 | +3.2% | -1.7% to +5.3% | 62% | -1.7% to +5.3% | 0.0% |
| below | Day +10 | 13 | -0.2% | -3.4% to +7.0% | 46% | -3.4% to +7.0% | 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/MDB.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/MDB.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/MDB.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).