This chip maker isn't exactly a sexy stock.
Shares of Advanced Micro Devices (AMD) have advanced a sleepy 11% over the past year.
However, AMD has experienced some turbulence that has lured short sellers.
Twice this year the stock suffered dramatic tumbles, including on July 18 when it plummeted 16% in a matter of hours after spooking investors by scaling back its revenue projections for the rest of the year.
Astec's stats show the number of AMD shares being borrowed has nearly doubled since the start of July. The betting is that the company will lose more momentum.
