Nikkei sinks 6.4 pct to lowest close since April 3
June 13, 2013 at 02:13 AM EDT
TOKYO, June 13 (Reuters) - The Nikkei average tumbled 6.4 percent on Thursday, hitting its lowest close since April 3 - the day before the Bank of Japan unveiled sweeping stimulus to revive the economy - as investors further cut their long Japanese equities and short yen positions.
