Tokyo capitalization shrinks $364 billion Tuesday (by V. Phani Kumar)

HONG KONG (MarketWatch) -- The Tokyo Stock Exchange lost $364 billion, or 9.4% of its market capitalization, on Tuesday as worries about a threat from nuclear radiation prompted heavy selling, dragging the benchmark Nikkei Stock Average (JP:NI225) 10.6% lower. The bourse's market capitalization shrank to $3.58 trillion at the end of Tuesday's trade, down from $3.95 trillion Monday, according to data from FactSet Research. The bourse has also lost about $660 billion, or 15.6% of its total capitalization from Friday's closing level. The TSE is by far the largest of Japan's six major stock markets. The combined value of all those stock markets shrunk by nearly $389 billion Tuesday, and more than $704 billion from Friday's closing levels.