--- title: oi description: This page provides a detailed explanation on how to plot open interest using various parameters such as min, max, calls, and puts. It also includes usage examples. keywords: - Open interest - Tutorial - Parameters - Option trading --- import HeadTitle from '@site/src/components/General/HeadTitle.tsx'; Plot open interest. Open interest represents the number of contracts that exist. ### Usage ```python oi [-m MIN] [-M MAX] [-c] [-p] ``` --- ## Parameters | Name | Description | Default | Optional | Choices | | ---- | ----------- | ------- | -------- | ------- | | min | Min strike to plot | -1 | True | None | | max | Max strike to plot | -1 | True | None | | calls | Flag to plot call options only | False | True | None | | puts | Flag to plot put options only | False | True | None | --- ## Examples ```python 2022 Feb 16, 09:13 (🦋) /stocks/options/ $ load SPY 2022 Feb 16, 09:14 (🦋) /stocks/options/ $ exp 10 Expiration set to 2022-03-11 2022 Feb 16, 09:14 (🦋) /stocks/options/ $ oi ``` ![oi](https://user-images.githubusercontent.com/46355364/154282811-b8b7d36b-2e4e-44c0-8026-b244d97a8608.png) ---