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. Found on http://www.duke.edu/~charvey/Classes/wpg/bfglosh.htm
The notification to a client by a brokerage house that more funds are required to bring a margin... <a target=_blank href='http://www.finance-glossary.com/terms/house-call.htm?id=699&ginPtrCode=00000&PopupMode=false' title='Read full definition of house call'>more</a>
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