1. What is a margin call? A margin call is when a broker asks an investor for additional funds to co
1. What is a margin call? A margin call is when a broker asks an investor for additional funds to cover losses in the investor\'s account. An investor, borrowing from the broker to buy securities, must hold at least a specific amount of equity in the account. If the value of the securities in the account falls below the required margin level, a margin call is issued to the investor requesting additional deposit to bring the account back to the required margin level.