Japan's Mizuho plans to acquire US-based private equity agent Capstone

Japan's Mizuho plans to acquire US-based private equity agent Capstone

The Mizuho Financial Group Inc. headquarters, center right, stands at dusk in this photograph taken with a fish-eye lens in Tokyo, Japan, on Friday, April 21, 2017. Photographer: Tomohiro Ohsumi/Bloomberg

Mizuho Financial Group plans to acquire the US private equity placement agent Capstone Partners, a person familiar with the matter said, as the Japanese lender looks to beef up its investment banking business.