Short Selling - selling stock that you don't own. To do so you must borrow the stock from the broker (who offsets it with stock owned by other customers). An investor will "sell sort" when they expect the price to decline, thus they will sell high and buy low at a later date. It can also be used as a hedge strategy when the investor believes other investments they own may go down (but they don't want to sell those investments for some reason - perhaps selling would trigger taxes) and so they will gain on the short sale offsetting losses on the other investment.
The securities act of 1933 requires short sales to be made on an uptick in price. This is to prevent short sales from causing a run on the stock. Market makers are not bound by such short sale rules.Selling short
Dictionary: Dollar Cost Averaging
Topics: China - Economics - Real Estate - Trading
Great Investors Focus: Darvas - Livermore - Neill - O'Neil
Authors: Levitt - Schwager Investment Bookstore