Or sometimes buy low sell lower. I have had more success with buy high sell higher. Stock near 52 week lows are there for a reason. Those reasons do not disappear overnight. AMT has broken the uptrend and clearly in a downtrend. See 2 yr chart. Whether they are right or wrong, Muddy Waters will keep pressure on AMT. People have seen them be right with disastrous consequences for the stock. Are they right about AMT - who knows? But I would not risk being long without protective puts. You could wake up one morning and find it down 10 points.