As for the rise on the day in question, there was absolutely nothing remarkable and there was absolutely no reason whatsoever to take note of it. Volume was tepid. I would not be surprised to see AMRI bounce around as it chugs back toward the high end of its current trading range. It is a good idea to take note of the volume as well as the price change on any given trading day. In the absence of volume, any price change is rendered less meaningful. Commentators on Bloomberg TV make frequent references to their proprietary indicator, Money Flow, which I think involves both price and volume.
As far as news is concerned, if anyone knew about any unreleased big news and leaked it anywhere, including here, they would be in Big Trouble legally.(I tried several tried several times to post this, but this message board seemed to be malfunctioning)