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Maintenance Margin

Minimum equity to maintain margin positions

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What is Maintenance Margin?

Maintenance Margin The minimum equity required in a margin account to maintain existing positions. If account equity drops below maintenance margin due to adverse moves, a margin call is triggered. For short options, maintenance margin is recalculated daily based on the underlying price and option value. Defined-risk spreads have fixed maintenance requirements.

Complete definition

The minimum equity required in a margin account to maintain existing positions. If account equity drops below maintenance margin due to adverse moves, a margin call is triggered. For short options, maintenance margin is recalculated daily based on the underlying price and option value. Defined-risk spreads have fixed maintenance requirements.

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