Here's why you are wrong. Market already included the price of acceptance before the actual review because it was pretty obvious it will go through. Now though, there is a problem with labeling which people did not anticipate, and it is a discomfort for the company, so now you see this effect on the share price. Bad news, but we might be going lower until the actual approval!!!!!
The AC outcome wasn't priced in at all. Large investors don't buy in AH, they sell opportunistically. The move up will occur tomorrow after the conf call and after analyst reports come out. Large investors who were already in won't be selling anyway but waiting for approval next month. A bunch of new large investors will come starting tomorrow now that it has been derisked.