It is a subsidiary of the Mizuho Financial Group and is one of the largest asset management companies in Asia.

[3][5] AM-One was formed on 1 October 2016, as a joint venture between Mizuho Financial Group and Dai-ichi Life using the pre-existing asset management units within each company.

[3][6][7] Currently, Mizuho Financial Group holds 70% of the company's shares and 51% of voting rights while Dai-ichi Life holds 30% of the company's shares and 49% of voting rights.

[2] While initially focused on Japan, the company has expanded its presence to Asia, Europe and America.

AM-One is headquartered in Tokyo with additional offices in London, New York, Singapore and Hong Kong.