# forge.ta.BollingerPercentB

```python
forge.ta.BollingerPercentB(**inputs: Any) -> None
```

Where the price sits between the Bollinger Bands.

%B = (source - lower) / (upper - lower)

No value when the bands meet.

middle = the simple average of the source over period

upper = middle + deviations * the population standard deviation of the same window, lower = middle - deviations * the same

Since Forge API 1.