It may have been super Tuesday across polling booths in US, but there was nothing super about Tuesday for Wall Street. US markets suffered one of their biggest one-day percentage drop in nearly a year, after the services sector unexpectedly contracted in January and a Fed officials hinted at the possibility of a mild recession.

The ISM's non-manufacturing index, which assesses banks, retailers and construction companies, slipped to 44.6%. A number below 50 reflects contraction.

Recession fears slammed sectors across the board. Banks and other financial services stocks were hit particularly hard after S&P said it could cut bank credit ratings. Goldman Sachs shares slipped after Oppenheimer downgraded its rating on the stock to "perform" from "outperform".

The Dow plunged 370.03 points, or 2.93%, to 12,265.13. The broader Standard & Poor's 500 index fell 44.18 points, or 3.20%, closing at 1,336.64, while the Nasdaq composite index slipped 73.28 points, or 3.08%, to 2,309.57.

A look at how the Indian ADRs performed:

Name Infosys Sify Rediff.com India Satyam Wipro ICICI Bank HDFC Bank MTNL VSNL Dr Reddy's Lab Tata Motors Patni Computer Sterlite Ind

Symbol INFY SIFY REDF SAY WIT IBN HDB MTE VSL RDY TTM PTI SLT

Price 39.85 4.98 9.02 24.34 11.92 57.74 110.89 6.52 25.01 13.85 18.51 13.92 20.23

Change -2.84 -0.22 -0.53 -1.68 -0.79 -2.70 -6.50 -0.36 -1.84 0.11 -1.32 -0.36 -1.03

Change% -6.65% -4.23% -5.55% -6.46% -6.22% -4.47% -5.54% -5.23% -6.85% 0.80% -6.66% -2.52% -4.84%

Volume 4,777,527 147,640 94,392 1,010,264 630,797 2,388,238 856,981 274,520 192,419 335,841 1,617,326 42,892 1,773,321

High 42.03 5.24 9.80 25.88 12.55 59.91 116.77 6.76 25.62 4.09 19.44 14.43 20.81

Low 39.77 4.95 9.01 24.34 11.92 57.46 110.89 6.50 25.00 13.78 18.25 13.89 19.78