> ## Documentation Index
> Fetch the complete documentation index at: https://help.arcus.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# What is the maintenance margin?

The minimum collateral to keep a position open, a percentage of notional that varies by market. Fall below it and the position enters liquidation.

It doesn't change between regular and off-hours. Per-market parameters are in the Arcus docs.