BoJ shock sends yen surging, Nikkei dives

The yen soared more than two percent against the dollar Thursday and Tokyo's Nikkei index plunged three percent after the Bank of Japan shocked markets by not ramping up its stimulus. Traders had widely expected the central bank to unveil fresh measures to shore up the world's number three economy after this month's deadly earthquakes in southern Japan and a string of weak data. The greenback plunged as low as 108.77 yen, sharply down from 111.78 yen earlier in the day, while the Nikkei stock in