A demand upon a customer to put up money or securities with the broker. The call is made when a purchase is made; also if a customer's account declines below a minimum standard set by the exchang [..]

See Performance Bond Call.

A call from the credit department for further funds to be deposited in the account to support additional exposure from running losses

An amount requested by a lender when the value of a loan is too high compared to the value of the collateral or security the borrower has offered. This is related to the loan to value ratio. This generally relates to loans used to purchase shares.

A demand that a party to a Derivative transaction deposit money or securities as security for the exposure of the Counterparty to the transaction.

Occurs when the value of an asset falls below the agreed loan to valuation ratio. The lender will ask the borrower to deposit enough money to bring the loan back to the agreed lending ratio.

Occurs when the value of an asset falls below the agreed loan to valuation ratio. The lender will ask the borrower to deposit enough money to bring the loan back to the agreed lending ratio.

A brokerage house's request for a customer to put up more cash or securities because existing collateral has fallen below the agreed upon minimum maintenance requirements.