Dr Gerrard's team tracked shares in the 100 biggest UK companies on the day after 210 England football games between 1984 and the end of last year's World Cup. The more important the game, the bigger the effect, they found. For a win, they rose 0.3 per cent on average. A defeat led to a 0.4 per cent downturn. The day after Germany put England out of the 1990 World Cup on penalties, the stock market fell by one per cent. Some of the effect may come from people spending more money as Britain remains in a tournament.