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Mag Magna Corp
Mag Magna Corp operates as the private investment office of Yasumitsu Shigeta, a figure known for founding the mobile technology distributor Hikari Tsushin in...
Mag Magna Corp
Mag Magna Corp operates as the private investment office of Yasumitsu Shigeta, a figure known for founding the mobile technology distributor Hikari Tsushin in 1988 and taking it public during Japan's telecommunications boom. The firm's investment posture is shaped by Shigeta's own trajectory: after surviving Hikari Tsushin's precipitous 99% stock decline during the dot-com crash, he rebuilt, and Mag Magna now reflects that bias toward operational grit and long-term capital commitment. The firm deploys capital primarily into early-stage and growth-stage technology companies, with a focus on enterprise software, fintech, and digital health. Unlike institutional venture funds, Mag Magna operates with permanent capital and a concentrated portfolio, enabling it to hold positions without exit pressure. Geographic focus centers on Japan and Southeast Asia. Publicly confirmed investments include the payments infrastructure provider Infcurion and the health-tech platform Ubie (per public record, 2023). The firm sometimes co-invests alongside Japanese corporate venture arms and regional family offices. Team size and total deployment are undisclosed. The firm is headquartered in Tokyo and does not publicly list additional offices. Shigeta remains the central investment decision-maker, though the firm is known to engage external advisors for specific diligences. Mag Magna's structural differentiator is its integration of operating expertise with investment capital. The firm functions less as a passive allocator and more as a strategic partner, often placing experienced operators from the Hikari Tsushin ecosystem into portfolio companies to drive growth — a model resembling a private holding company more than a conventional multi-family office.
General information
Firm type
Multi Family Office
Year founded
—
AUM
Undisclosed
Location
Region
Asia
Country
Japan
City
Tokyo
Corporate office
Tokyo, Japan
Principals
Yasumitsu Shigeta
Founder and CEO
Sector focus
Frequently asked questions
Who runs investment decisions at Mag Magna Corp?
Yasumitsu Shigeta is the founder and CEO and serves as the primary investment decision-maker. Shigeta is best known for founding Hikari Tsushin, a mobile technology distributor he took public in the 1990s. The firm does not publicly disclose an investment committee.
What is Mag Magna Corp's investment strategy?
Mag Magna pursues a concentrated, early-stage and growth-stage equity strategy focused on technology companies. Sectors of emphasis include enterprise software, fintech, and digital health. The firm invests permanent capital, meaning it has no fixed fund life and can hold assets indefinitely.
Does Mag Magna Corp co-invest with outside partners?
Yes. The firm is known to co-invest alongside Japanese corporate venture capital arms and other regional family offices. Its flexible structure permits both leading and participating in rounds, though it tends to favor situations where it can provide strategic operational support in addition to capital.
What is the connection between Mag Magna Corp and Hikari Tsushin?
Mag Magna Corp is the private investment vehicle of Hikari Tsushin founder Yasumitsu Shigeta. While operationally separate, the firm draws on the Hikari Tsushin ecosystem for deal flow, operational expertise, and executive talent, and frequently places experienced operators from that network into portfolio companies.
What is Mag Magna Corp's geographic focus?
The firm invests primarily in Japan and Southeast Asia. Its portfolio includes companies based in Tokyo and other regional hubs, and it is willing to back Japanese-founded startups with an eye toward regional expansion.
How does Mag Magna Corp source deals?
Deal flow is largely relationship-driven. Shigeta leverages a deep network built across four decades in Japanese technology and telecommunications. The firm's reputation for patient, operator-oriented capital attracts founder-led companies that might be underserved by traditional institutional venture funds.
Is Mag Magna Corp a single-family office or a multi-family office?
It is best characterized as a multi-family office in function, as it manages capital for Shigeta and a small number of aligned families, but it is not marketed externally. Its investment vehicle structure is private, and it does not solicit third-party capital.
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