People were waiting a LONG time for action on this. As a result - the 1st spike and possibly on a 2nd spike - some will bail (though I expect each subsequent spike to be fewer). Some were probably so excited to see .01 that they either took profits or exited at their entry point. This symbol change is about 30 days past when it was originally expected. And you think people get nervous holding overnight (daytrading) or more than a week or two (swing) - watch em get nervous when they hold through tax loss season (December) - especially when they thought the fireworks would start 1 month ago. Hence - probably some were holding longer vs. plan - so they left at first op to do so.
I Fully expected to see profit taking on this spike. It's the "cycle" w/ this things.