In the Sensex pack, Asian Paints, HUL, UltraTech Cement, Sun Pharma, Bajaj Finserv, Reliance, HDFC Bank and Bharti Airtel were the top gainers. Wipro, MM, Axis Bank, ICICI Bank, SBI, Infosys, L&T and TCS were the top losers. According to experts, the warning signals f rom weak US manufacturing data added concerns about a potential slowdown in the US economy, which dragged the domestic indices. Further, a sluggish Chinese outlook exacerbated the decline in oil prices to a nine-month low.