# forge.signals.Size

```python
forge.signals.Size(*, kind: str, note: str | None = None, value: float | np.ndarray | None = None, annual: float | None = None, lookback: int | None = None, round: str = 'down') -> None
```

How much each entry trades. Build one with a constructor, like ``fg.Size.risk_pct(1.0)``.

## Members

| Name | Signature | Summary |
| --- | --- | --- |
| fixed_margin | (value: float, *, round: str = 'down', note: str \| None = None) -> Size | A position that uses this much margin, in the account currency. |
| lots | (value: float \| np.ndarray, *, round: str = 'down', note: str \| None = None) -> Size | A fixed number of lots, or one number per bar. |
| notional | (value: float, *, round: str = 'down', note: str \| None = None) -> Size | A position of this value, in the account currency. |
| pct_equity | (value: float, *, round: str = 'down', note: str \| None = None) -> Size | A position worth this percent of the account's equity. |
| risk_cash | (value: float, *, round: str = 'down', note: str \| None = None) -> Size | Risk this much money, in the account currency, on each trade. |
| risk_pct | (value: float, *, round: str = 'down', note: str \| None = None) -> Size | Risk this percent of the account on each trade, from the entry to the stop. |
| units | (value: float \| np.ndarray, *, round: str = 'down', note: str \| None = None) -> Size | A fixed number of units of the instrument, or one number per bar. |
| vol_target | (annual: float, *, lookback: int = 20, round: str = 'down', note: str \| None = None) -> Size | Size so the position's yearly volatility is this fraction of the account, like 0.1. |

``lots`` and ``units`` take a number or one per bar. The risk methods size the entry so the stop
loses that much, so they need a stop. ``round`` is ``"down"`` (the default, never above the
amount) or ``"nearest"``, to the broker's lot step.

Since Forge API 1.