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<p>A margin call is a request for funds from a broker when money must be added to a margin account to meet minimum capital requirements. A margin call occurs when the percentage of an investor’s equity in a margin account falls below the broker’s required amount.</p><p>A margin call refers specifically to a broker’s demand that an investor deposit additional money or securities into the account so the value of the investor's equity and the account value rise to a minimum value indicated by the maintenance requirement.<br></p>