24/7 Wall St. Closing Bell — January 31, 2013: Markets Slip Again (HES, STX, QCOMM, FIO, CMA, CTXS, COP, EA, FB, JDSU, LVS, AET, MO, AN, CL, DNKN, MA, PHM, TWC, UPS, BYI, GDOT, WYNN, CVX, XOM, MAT, MRK, NOV, TSN, RIMM, WMS, SGMS, STZ)