Signifiant

All three co-representatives — Yusuke Asakura, Kenji Kobayashi, and Takafumi Murakami — make investment decisions jointly. The firm does not operate a partner-assigned coverage model; instead, the three principals engage each portfolio company as a group. This applies to THE FUND's private growth investments, the management-advisory practice, and the public-equity book.

Signifiant sources opportunities primarily through its management-advisory practice and the personal networks of its three founders. The firm runs a fee-based advisory business for growth-stage companies, which serves as a pipeline: it advised SmartHR for roughly a year before THE FUND led an investment round in July 2019. Direct inbound inquiries from entrepreneurs are accepted through the website, though the firm cautions it cannot respond to all contacts given its deliberately small team.

Signifiant is structured as an asset manager running institutional and proprietary capital, not a family office. Its flagship vehicle, THE FUND, is a growth-capital partnership managed jointly with Mizuho Financial Group. The firm explicitly distinguishes its approach from venture capital: it invests concentrated, late-stage checks with the intention of remaining a shareholder post-IPO, rather than pursuing early-stage diversification and rapid exits.

THE FUND targets late-stage private companies in Japan, defined as businesses with established product-market fit, paying customers, and prior rounds from external venture investors. Seed and early-stage startups are excluded. Once a portfolio company lists, Signifiant continues its engagement through the post-IPO phase — what the firm calls bridging the 'second valley of death' — rather than distributing shares at or shortly after the offering.

Signifiant does not seek board representation. The firm believes that controlling decisions through equity ownership or board seats is inappropriate governance for growth-stage companies. Instead, it advises portfolio companies to appoint truly independent outside directors suitable for a public-company governance profile.

Mizuho Financial Group is a strategic partner in THE FUND. Signifiant manages and operates the vehicle, while Mizuho contributes capital and institutional backing. The exact LP structure has not been publicly disclosed beyond this co-management arrangement.

THE FUND's basic investment range is Y2 billion to Y4 billion per company, with a minimum of Y1 billion. The fund invests on a concentrated basis — deliberately limiting the number of portfolio companies — and acts as a lead investor that forms the funding round rather than following terms set by others. Holdings are capped at 15% of a company's equity.