Difference between revisions of "Short sale"

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For example, if an investor believes stock x is overpriced and will fall, he might want to sell short 100 shares of x.  His broker will borrow the shares from someone who owns them with the promise that the investor will return them later. The investor immediately sells the borrowed shares at the current market price. If the price drops, he "covers" the short position by buying back the shares, and his broker returns them to the lender.  
For example, if an investor believes stock x is overpriced and will fall, he might want to sell short 100 shares of x.  His broker will borrow the shares from someone who owns them with the promise that the investor will return them later. The investor immediately sells the borrowed shares at the current market price. If the price drops, he "covers" the short position by buying back the shares, and his broker returns them to the lender.  


The profit is the difference between the price at which the stock was sold and the cost to buy it back, minus commissions and expenses for borrowing the stock. If the price goes up, however, the potential for loss is unlimited, because at some point the investor must replace the 100 shares of x he or she sold.  
The profit is the difference between the price at which the stock was sold and the cost to buy it back, minus commissions and expenses for borrowing the stock. If the price goes up, however, the potential for loss is unlimited, because at some point the investor must replace the 100 shares of x he sold.  


[[SEC]] rules allow investors to sell short only on an [[uptick]] or a [[zero-plus tick]], to prevent [[pool operators]] from driving a stock price down with heavy short-selling and then buying the shares to make a big profit.


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