The momentum of yesterday's gains was regained as Best Buy (BBY ) extended the deadline for its former founder to make an offer. This morning'S CPI figures, which indicated that the cost of living fell by 0.3% in the previous month, provided doubters with renewed evidence to challenge the veracity of government figures. Amgen' shares finished off strongly, but their performance dropped significantly after the biotechnology powerhouse announced a significant dividend increase (over 2%).