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Signage for Mizuho Financial Group Inc. is displayed outside a Mizuho Bank Ltd. branch in Tokyo, Japan, on Thursday, Jan. 29, 2015. Mizuho Financial Group, Japan's third largest bank, is scheduled to report third-quarter earnings on Jan. 30. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images

Signage for Mizuho Financial Group Inc. is displayed outside a Mizuho Bank Ltd. branch in Tokyo, Japan, on Thursday, Jan. 29, 2015. Mizuho Financial Group, Japan's third largest bank, is scheduled to report third-quarter earnings on Jan. 30. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images