Hey, it's never wrong to take a gain --- and hindsight is always 20/20. It could just as easily have fallen at the open. I do like the sell-half, keep-half idea, though.
I'm kicking myself because I've got an itchy enough trigger finger that I didn't get in on this one at all. Just 2 hours before the close, I looked at it again, and thought about it, and almost bought, but ... didn't quite get around to submitting the order.
8^(