# forge.ta.osma

```python
forge.ta.osma(source: ArrayLike, fast_period: int = 12, slow_period: int = 26, signal_period: int = 9) -> np.ndarray
```

OsMA: the MACD line minus its signal line.

Since Forge API 1.

## Class forge.ta.OsMA

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

The MACD histogram: MACD minus its signal line.

OsMA = MACD - signal

MACD = EMA(source, fast_period) - EMA(source, slow_period), signal = the simple average of MACD over signal_period

Since Forge API 1.