First up on our Tweet-driven list is Coach (COH - Get Report), the handbag and fashion accessory company that's seen its shares rally more than 20% so far this year. Coach is a good example of why technical inputs can be so valuable for investors: this stock has been on a momentum tear for the last few years, and fundamentals aren't worth much when investors are trying to determine when that rally might run out of gas.
A potentially bearish setup in shares of Coach does, though.
Right now, Coach is forming a head and shoulders top, a bearish formation that indicates exhaustion among buyers. Keep in mind that the existence of the pattern doesn't mean that Coach's shares are moving lower just yet -- it has to trigger first. For that short signal, shares need to break down below the neckline at $72.Even though the head-and-shoulders (and its inverse) is likely the most well known technical pattern, it's still a valuable one: an academic study conducted by the Federal Reserve Board of New York found that the results of 10,000 computer-simulated head-and-shoulders trades resulted in "profits