Nikkei at four-week closing low, battered by yen

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By Elaine Lies

TOKYO, Oct 22 (Reuters) - Japan's Nikkei average ended at a four-week closing low on Monday, knocked 2.2 percent lower by a strong yen that hit exporter stocks and last week's Wall Street slide on growing concerns about the U.S. economy. The Nikkei shed more than 500 points shortly after the opening, falling 3.2 percent, before recovering slightly on short-covering. The broad TOPIX index also fell more than 3 percent early on before ...