Tokyo - Japan's benchmark Nikkei 225 Stock Average on Friday lost nearly 10 per cent of its value, tumbling below 8,000 for the first time since May 2003, on indications the global financial crisis was beginning to hit the nation's exporters.
The Nikkei shed 811.9 points, or 9.6 per cent, to close at 7,649.08.
The broader Topix index of all first-section issues plunged 65.59 points, or 7.52 per cent, to 806.11.
The tumble was led by Sony Corp, whose shares plunged 14 per cent one day after the world's second-largest electronics company warned its profits this year were expected to drop nearly 60 per cent compared with last year.