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A pedestrian holding an umbrella walks past the corporate logo of Mizuho Financial Group Inc. displayed outside a Mizuho Bank Ltd. branch in Tokyo, Japan, on Tuesday, May 13, 2014. Mizuho Financial Group Inc., Japan's third largest bank, is scheduled to report fourth-quarter earnings on May 14. Photographer: Kiyoshi Ota/Bloomberg via Getty Images

A pedestrian holding an umbrella walks past the corporate logo of Mizuho Financial Group Inc. displayed outside a Mizuho Bank Ltd. branch in Tokyo, Japan, on Tuesday, May 13, 2014. Mizuho Financial Group Inc., Japan's third largest bank, is scheduled to report fourth-quarter earnings on May 14. Photographer: Kiyoshi Ota/Bloomberg via Getty Images