Business started quietly but, with technology stocks in the vanguard, prices advanced on a broad front, early gains pushing the FTSE 100 up 42.5 points to 5188.7. Volume increased around lunchtime when it was clear that Wall Street would open strongly and, by London's close, almost 2.5bn shares had been traded. The FTSE peaked 138.1 higher and closed just below the day's best at 5277.1, up 130.9.