I traded this one time before for a fast stop loss when I was taking Zack's for a trial run. It was a new Zack's #1 pick and then it dive bombed. The next day Zack's downgraded it to Zack's #3 rank. Further confirmation in my mind anyways that the mainstream guidance to buy stocks right after they went on a run is not the right way to go. Looking at the chart, it was uncanny how they recommended to buy right at the peak. I believe the returns that they post for Zack's number 1 picks versus the S&P 500 index have a huge survivorship bias. After a stock goes down, it loses the rank, so no longer gets rolled into thier performance numbers. Anyways, I figured I'd try the other side of that trade and buy GLW low and give it a run now.