> For the complete documentation index, see [llms.txt](https://docs.spin.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.spin.fi/tech-documentation/futures.md).

# Perpetuals

This part describes the fundamental components of Spin Perpetuals and their logic including Collateral, Liquidations, Margin Ratio, Funding, etc. Long story short, a nerdish read for techies.

## Table of Contents

* [Trading Modules](/tech-documentation/futures/trading-modules.md)
* [Collateral](/tech-documentation/futures/collateral.md)
* [Unrealized PnL](/tech-documentation/futures/unrealized-pnl.md)
* [Funding](/tech-documentation/futures/funding.md)
* [Margin Ratio & Liquidation](/tech-documentation/futures/margin-ratio-and-liquidation.md)

<figure><img src="https://1444018571-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MdXZ16pgLU14jLP6Urj%2Fuploads%2Fqa0fSTWlA6YUSSF35i51%2F777963.gif?alt=media&amp;token=e6489314-fbdd-4c2a-891f-8a89dd7c5edc" alt=""><figcaption></figcaption></figure>