Option Investor
Glossary

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Margin Call

If a security is purchased on margin and there is an adverse movement in the price of the security, the investor may be asked to provide additional capital to increase the value of the margin account to meet the margin requirements.