US markets faltered Thursday on account of various factors, with uncertainty over China's currency revaluation and fresh London blasts leading the downtrend. While the Dow Jones dropped 61 points to 10,628, the Nasdaq lost 10 points to 2,179.Indian ADRs, too, largely succumbed to losses. While HDFC Bank lost 4.27% to $46.40, Tata Motors and MTNL were down 2% each to $10.65 and $7.40, respectively. ICICI Bank and Dr. Reddy's, too, ended lower at $23.96 and $17.25, respectively.Among tech floats, Satyam rose 3.36% to $28.32, while Infosys ended with a per cent gain at $70.42. Wipro, however, dipped marginally to close at $21.