Shares of Schering-Plough were off 2 cents at $ 16.78 near midday on the New York Stock Exchange .
Shares of Schering-Plough closed down 4 cents at $ 16.76 in Thursday trade on the New York Stock Exchange .
Troubled Devil Rays prospect Josh Hamilton 's promising future is in doubt after the Devil Rays announced Monday night that he will miss the season because of unspecified personal problems .