Major banks tried to defuse the extent of their exposure to Enron by claiming that the impact of bad loans would not require any revision of already grim profit forecasts for the year to next March. This failed to halt the continued stampede out of bank stocks which saw market leader Mizuho Holdings stumble more than 5%. Sumitomo Mitsui, which has outstanding loans of about £150m, was harder hit, tumbling 8%, and Mitsubishi Tokyo, with almost £200m owing, fell by more than 3%.