Shoppers are expected to have spent more than �3 billion by the time Cyber Monday ends, after the American phenomenon of Black Friday led to an online surge as customers were inspired to bag bargains.
The Dow Jones industrial average fell 14.9 points, or 0.08 percent, to 17,798.49, the S&P 500 gained 1.24 points, or 0.06 percent, to 2,090.11 and the Nasdaq Composite added 11.38 points, or 0.22 percent, to 5,127.53.
The pound's fortunes are likely to diverge next week, pulled higher by the European Central Bank and dragged lower by the Federal Reserve.
China's stocks tumbled the most since the depths of this year's rout as some of the largest brokerages disclosed regulatory probes, the nation's industrial profits fell and companies struggled to repay bonds.
RIO DE JANEIRO Toxic materials such as arsenic were found in the water of the Rio Doce river days after a dam burst at a mine in Brazil earlier this month, an executive for Vale, the co-owner of the mine operator, confirmed on Friday.