Football fans can afford to be "ABUs". But investors cannot. While the share prices of the 17 other quoted British football clubs has fallen since April, Manchester United is on the up, with the share price rising from 644p to 667.5p. At the other end of the league - in every sense - is Bolton, whose shares have dropped from 51.5p to 26.5p. Investors and fans alike can only hope for a good cup run.