AP Big moves The Standard & Poor’s 500 index is only up about 0.5% so far today, but a few stocks on the index are seeing big, double-digit gains. Shares of DR Horton (DHI), Valero (VLO) and J.C. Penney (JCP) are all up about 10% at the latest, with Hess (HES) stock rising 9%. DR [...]