A positive update by Pfizer PFE.N and BioNTech BNTX.O on their vaccine offering some protection against the latest variant helped push the three main indexes for gains of over 3% each this week. The Labor Department's report showed U.S. consumer prices accelerated 6.8% in the 12 months through November, their highest level since 1982, as the cost of goods and services rose broadly amid supply constraints. "Today's rise in U.S. inflation was broadly expected but it does confirm that price pressures continue to build but also broaden out," said Jai Malhi,global marketstrategist at J.P. Morgan Asset Management.