Margin. The money deposited with a broker by a speculator in stocks or in grain, cotton, coffee,
etc., to protect the broker against loss.   In stocks the margin required by a broker ranges from 5
to 20 per cent of the par (face) value according to the character of the securities. An average
margin is 10 per cent, which is equal to $1.000 on 100 shares of stock or $10,000 of bonds.