SE looks like it is in a wave 5 of a cycle III. This would make sense with how crazy of a show it has put on. What I am seeing is a conservative PT of 390 for this top, but it could go well into the 400's. (if my count is correct).
From there we will see a retracement (likely 23.6) for the wave IV which is going to be in that channel zone. Any dip into that channel is a buy as SE has bounced hard out of it numerous times. I would draw and alert it on your chart.