why the share price drop

Hey guys, its my first post here on UNS.
Just wanted to get other's opinion on why the almost 15% SP drop since 20th of january?
From my research I cannot see anything that has fundamentally changed, and with a few more large signings in the short term future as well as an ANN this coming monday it does confuse me. Apart from shorters, I cant see any other reason for this drop..
Any points of view would be greatly appreciated.