AKRX: I bought on Wed and sold yesterday. I didn't like the way it reacted to the news, even considering no PR yet. Sort of ho-hum. I could be way off but many of these stocks are not reacting on good news or earnings anymore.
I am not familiar with the product or the company but it looks like its an approval for a generic (ANDA approval) not a new drug per say. Could be (I would speculate even likely) they don't expect material revenue. I have no position just a possible explanation.