If you look back to the last time a rise of this level occured, you'll see it turned out to be a big buyer (with some followers presumably) and a lack of sellers... From then the sp slowly dropped again. From what I gather a market cap of this size means a completely volatile stock. This rise could be anything - with a bit of luck to holders it'll be on news. Eitherway someones got some pretty strong confidence in it. I'll keep watching.
