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

# Margin Tiers

Astaria uses margin tiers to calibrate risk requirements across different event-linked perpetual markets.

Margin requirements may depend on:

* Market depth
* Volatility
* Event class
* Time to resolution
* Distance of the Index Price from `0.5`
* Proximity to the probability boundaries of `0` and `1`

## Dynamic Risk Profiles

As market conditions change, a market’s effective leverage limits and margin requirements may also change.

This is especially relevant:

* Near event resolution
* During periods of thin liquidity
* When jump risk increases
* When the market enters boundary regions

## Purpose

Margin tiers are designed to ensure that capital efficiency remains aligned with market risk rather than being fixed across all event types.