Maintenance Margin

What does it Mean? The minimum amount of equity that must be maintained in a margin account. In the context of the NYSE and NASD, after an investor has bought securities on margin, the minimum required level of margin is 25% of the total market value of the securities in the margin account. Keep in mind that this level is a minimum, and many brokerages have higher maintenance requirements of 30-40%.

Also referred to as "minimum maintenance" or "maintenance requirement".
Investopedia Says... As governed by the Federal Reserve's Regulation T, when a trader buys on margin, key levels must be maintained throughout the life of the trade. First off, a broker cannot extend any credit to accounts with less than $2,000 in cash (or securities). Second, the initial margin of 50% is required for a trade to be entered. Finally, the maintenance margin says that an equity level of at least 25% must be maintained. The investor will be hit with a margin call if the value of securities falls below the maintenance margin.

Terms Related Links

Broker's Call
House Maintenance Requirement
Initial Margin
Leverage
Margin
Margin Account
Margin Call
Minimum Margin
Regulation T - Reg T
Remargining

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