Wall Street ended on a flat note yesterday. The Dow Jones industrial average was down 16 points at 12,533. The Nasdaq moved up 14 points to 2,341.Indian ADRs ended on a firm note. Sterlite zoomed 7% to $18.20. ICICI Bank soared nearly 6% to $43. Infosys, Satyam, Wipro, HDFC Bank, MTNL, Tata Motors and Dr.Reddy's surged 1-4% each. Genpact and Patni Computers, however, ended on a weak note.