24/7 Wall St. Closing Bell — February 21, 2013: Markets Turn South Early (GOOG, NKE, BHP, GRPN, UNH,CROX, ETP, PAAS, TSLA, WLT, AUY, CG, CHK, CDE, ESV, SWY, WMT, AGU, AIG, FTR, HPQ, MRVL, NEM, JWN, ANF, EGO, PAY, PRKR, QCOM, RPRX)