# BIDU: options-positioning snapshot

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

| Published field | Value |
| --- | --- |
| Close (USD/share) | 84.32 |
| Delta neutral (USD/share) | 92.51 |
| Gamma neutral (USD/share) | 87.95 |
| Gamma max (USD/share) | 107.87 |
| Open interest (contracts) | 369,924 |
| Nearest-expiration max pain (USD/share) | 90.00 (2026-10-09) |
| All-expiration max pain (USD/share) | 96.00 |
| Net gamma exposure | -4,556,530 |
| Confirmed GEX flip (USD/share) | 87.95 |
| Call wall (USD/share) | 90.00 |
| Put wall (USD/share) | 80.00 |
| Put/call open-interest ratio | 0.67 |
| Options catalyst-intensity score (0–100) | 45.4 |
| Options directional score (-100 to +100) | 9.1 |
| IV rank | 90.4 |
| Front ATM IV | +35.5% |
| Front-minus-back IV | -6.0 pp |
| Front expected move | +4.9% |
| Front ATM straddle / spot | +3.5% |
| Front 25-delta risk reversal | -5.1 pp |
| Call OI change, 1 session | -9,598 contracts · -4.2% |
| Put OI change, 1 session | -9,102 contracts · -5.8% |
| Call minus put OI growth, 1 session | +1.6 pp |
| Call OI change, 5 sessions | +7,132 contracts · +3.3% |
| Put OI change, 5 sessions | +608 contracts · +0.4% |
| Call minus put OI growth, 5 sessions | +2.9 pp |
| Daily call OI change surprise | -0.48σ (252 prior changes) |
| Daily put OI change surprise | -0.84σ (252 prior changes) |
| Daily call-minus-put growth surprise | +0.70σ (252 prior changes) |
| Daily open interest change (contracts) | -18,700 |
| Daily open interest change z-score (prior 252) | -0.62σ (252 prior changes) |
| Gamma max distance from close | +27.9% |
| Delta neutral distance from close | +9.7% |
| Prior-year sessions closer to gamma max | 99.2% of 252 |
| Prior-year sessions closer to delta neutral | 58.7% of 252 |

## Historical gamma-max cross outcomes

| Direction | Horizon | n | Median | Middle 50% | Above zero | Nominal ≥90% median interval | Confidence floor |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: |
| above | Day +1 | 21 | -0.4% | -1.9% to +0.9% | 43% | -1.5% to +0.1% | 0.0% |
| above | Day +3 | 21 | -0.6% | -2.0% to +6.1% | 43% | -1.9% to +4.8% | 0.0% |
| above | Day +5 | 21 | -0.6% | -2.8% to +5.7% | 48% | -2.8% to +5.5% | 0.0% |
| above | Day +10 | 21 | +1.5% | -3.6% to +9.8% | 62% | -0.5% to +6.1% | 0.0% |
| below | Day +1 | 22 | +0.6% | -0.8% to +1.7% | 64% | -0.7% to +1.4% | 0.0% |
| below | Day +3 | 22 | -1.1% | -3.5% to +5.7% | 50% | -3.4% to +5.5% | 0.0% |
| below | Day +5 | 22 | +1.1% | -2.1% to +8.7% | 59% | -2.0% to +8.7% | 0.0% |
| below | Day +10 | 22 | +0.0% | -5.8% to +7.1% | 50% | -5.6% to +5.6% | 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/BIDU.json)
- [Historical CSV](https://halfonadouble.com/api/v1/history/BIDU.csv)
- [Complete advanced analysis](https://halfonadouble.com/api/v1/analysis/BIDU.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).