# Femto Partners

Femto Partners is a Private Equity based in Tokyo, Japan.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Tokyo, Japan
- **Region:** Asia
- **Address:** 東京都港区南青山一丁目1番1号 新青山ビル東館19階, Tokyo, Japan
- **Founded:** 2017
- **Assets under management:** Undisclosed
- **Website:** femto.vc
- **LinkedIn:** https://www.linkedin.com/company/femto-partners

## Regulatory record

- **Reports private funds:** No

## About

Femto Partners is a Tokyo-based independent firm that focuses on growth equity and venture capital strategies across Japan.

## Sectors

- Enterprise Software

## People

- 磯崎 哲也 — Founder & General Partner
- 曽我 悠平 — General Partner
- 大久保 克彦 — Managing Partner

## Questions

### What is Femto's track record in Japanese VC performance benchmarks?

In December 2025, Femto ranked first in the 7th Domestic VC Performance Benchmark survey for the 2024 vintage year. The firm self-reported the ranking on its website. No independent verification of the underlying methodology or peer set is publicly available.

### Who runs investment decisions at Femto Partners?

Founder and General Partner Tetsuya Isozaki leads the firm alongside General Partner Yuhei Soga and Managing Partner Katsuhiko Okubo. The eight-person team operates without a separate investment committee disclosed publicly; principals Isozaki and Soga appear as the primary decision-makers based on firm materials.

## Related profiles

- [FEMSA Ventures](https://altss.com/profile/femsa-ventures)
- [FemuQuì Ventures](https://altss.com/profile/femuqui-ventures)

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Last updated: 2026-05-29T20:58:06.516Z

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