Short/sell stocks

Is when an investor borrows shares of another player in the market, and then sells them at the current price. The investor then hopes to be able to buy the shares back cheaper, before they have to be returned to the lender. If the share price falls below the price at which you sold the shares, you will then, in short, make money on the trade.

A "short strategy" is therefore used by investors who believe that a stock / instrument will fall in value.