The US markets tumbled on Thursday after the investors booked profit from the market's recent rally. While the Nasdaq dropped 17 points to 2,058 on weakness in Amazon.com and Starbucks, the Dow Jones was down four points at 10,593.Indian ADRs displayed mixed trend on the US bourses yesterday. Infosys was marginally up at $67.20, and Wipro finished unchanged at $21.78. Satyam, however, was down a per cent at $24.10.HDFC Bank, ICICI Bank and VSNL all ended with marginal gains at $44.62, $20.40 and $10.15, respectively, while Dr. Reddy's declined 1.47% to $16.78.