Notification by a brokerage house that a customer's margin account is below the minimum maintenance level. The client must provide more cash or equity, or the account will be liquidated.
Notification to a client that that the equity in their margin account is below the firm's maintenance level.
A call from the brokerage to the customer requesting that the customer deposit additional funds into their account in order to return the balance to its required level.
Brokerage firm notification that a client's margin account equity is below the firm's maintenance level. Once the equity declines below that point, the client must deposit additional funds or securities. If the client fails to deliver the required margin, securities in the account will be liquidated to cover the call. Normally, house call limits are higher than the limits set by the National Association of Securities Dealers (NASD) and the exchanges with jurisdiction over these rules.