MAINTENANCE MARGIN

Minimum amount or value of equity that should be maintained in a margin account in order to continue holding one or more futures contract. In New York Stock Exchange and Financial Industry Regulatory Authority, when a trader buys on margin, the required level of margin must be at least 25% of the total market value of the securities on a margin account. But many brokerages have higher maintenance requirements, from 30% to 40%.

Also called minimum maintenance or maintenance requirement.