Definitions for "Buy on margin"
A risky technique involving the purchase of securities with borrowed money.
Buying on margin allows an investor to borrow money to buy more shares of a certain stock, using the shares that are bought as collateral for the investment. Buying on margin is prohibited in the Marketocracy comptetition. Using such tools is highly restricted in a mutual fund setting.
borrowing money to use specifically for buying securities of any kind in a brokerage account.