Margin is the use of equity in brokerage accounts as collateral to borrow money or to sell short, to cover the risk of loss, equal to the percentage of equity over the market value of the account.
by William C. Spaulding
most investors make money by buying a stock or other security at a low price, then selling it later for a higher price but some investors make money when the price of a stock falls.
by William C. Spaulding