> For the complete documentation index, see [llms.txt](https://support.power.trade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.power.trade/trading/margin-and-liquidation.md).

# Margin & Liquidation Rules | Manage Risk on PowerTrade

- [Account Health & Liquidation | Thresholds & Stages](https://support.power.trade/trading/margin-and-liquidation/account-health-and-liquidation.md): How account health is calculated and what triggers reduce‑only, ADL and forced liquidation.
- [Portfolio Margin (SPAN) | Scenarios & Shock Factors](https://support.power.trade/trading/margin-and-liquidation/portfolio-margin.md): SPAN‑based scenario margining using spot and volatility shocks; nine PV scenarios in USD.
- [Margin Methodology | Inputs, Scenarios & Parameters](https://support.power.trade/trading/margin-and-liquidation/margin-methodology.md): USD‑denominated portfolio margin with IV surface, nine scenarios and pair‑level aggregation.