---
title: volume
description: Documentation page outlining the usage, parameters, and results from
  the volume function, which provides historical volume comparison between similar
  companies.
keywords:
- volume function
- historical volume comparison
- stock volume
- financial data
- stock market analysis
- company comparison
- parameters
- data visualization
- stock analysis
---

import HeadTitle from '@site/src/components/General/HeadTitle.tsx';

<HeadTitle title="stocks/ca/volume - Reference | OpenBB Terminal Docs" />

Historical volume comparison between similar companies.

### Usage

```python
volume [-s START]
```

---

## Parameters

| Name | Description | Default | Optional | Choices |
| ---- | ----------- | ------- | -------- | ------- |
| start | The starting date (format YYYY-MM-DD) of the stock | 2021-11-24 | True | None |

![volume](https://user-images.githubusercontent.com/46355364/154074657-72976b1a-fc27-4917-8d43-95f5b54da32e.png)

---