---
title: ema
description: OpenBB Terminal Function
---

# ema

Strategy where stock is bought when Price  EMA(l)

### Usage

```python
ema [-l LENGTH] [--spy] [--no_bench]
```

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## Parameters

| Name | Description | Default | Optional | Choices |
| ---- | ----------- | ------- | -------- | ------- |
| length | EMA period to consider | 20 | True | None |
| spy | Flag to add spy hold comparison | False | True | None |
| no_bench | Flag to not show buy and hold comparison | False | True | None |

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