# Mizuho Securities Principal Investment

Mizuho Securities Principal Investment is a Private Equity based in Tokyo, Japan.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Tokyo, Japan
- **Region:** Asia
- **Address:** Tokyo, Japan
- **Founded:** 2005
- **Assets under management:** Undisclosed
- **Website:** mizuho-sc.com
- **LinkedIn:** https://www.linkedin.com/company/mizuho-securities

## Regulatory record

- **Reports private funds:** No

## About

Mizuho Securities Principal Investment is the investment arm of Mizuho Securities. It has made 12 investments, including a Series A - II investment in Suono Bio on March 25, 2021. The firm has 5 portfolio exits, including C4 Therapeutics, which exited on October 02, 2020.

## Questions

### Is Mizuho Securities Principal Investment a traditional private equity fund or a captive investment arm?

It operates as a captive direct investment division of Mizuho Securities, deploying proprietary balance-sheet capital rather than managing third-party committed funds. This makes it structurally closer to a corporate principal investing desk than to a blind-pool general partner. Unlike independent Japanese GPs that must return capital to external limited partners, the unit's investment horizon and exit discipline are governed by Mizuho's internal capital allocation framework and regulatory capital requirements.

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Last updated: 2026-06-03T20:00:00.000Z

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