Actually,if you look at past price action cys should be around 13.30 this close to ex-date. The only thing i can think of that is holding cys's price down is the proposed legislation to eliminate fannie and freddie.
The proposed legislation would, I think, affect all agency Reits and not just CYS. Also, in his last CC, AGNC's CEO address the demise of Freddie and Fannie and how it would affect agency Reits. His replay was liken the demise of Freedie and Fannie to mRieits to the effect that the demise of Pepsi and Coke would have on Dr. Pepper. He was looking forward to it because Freddie and Fannie have had such a great advantage over others in the past.