Markets open weak; Nifty down 100 pts

There are no gainers in the Sensex. Reliance Infra is down 6.6% to Rs 727, SBI has lost 5.3% to Rs 1,110 and Jaiprakash Associates has declined 5.15% to Rs 152. Reliance Industries, ICICI Bank, HDFC Bank and DLF are down over 3.5% each.