iSigma Capital
Est. dry powder
$97.6M
Raised, not yet invested
AUM
—
Not reported
Latest fund
$295M
iSigma Business Advancement Fund III
Est. cheque size
$262K–
From fund sizes
Deals, last 12 months
5
Last seen investing Aug 2026
About iSigma Capital
iSigma Capital (ISC) is a Tokyo-based private equity firm operating as a wholly-owned subsidiary of Marubeni Corporation. The firm focuses on buyout investments in the lower middle market in Japan, targeting small and medium enterprises (SMEs) with enterprise value between JPY 2 billion to 20 billion. While being sector agnostic, ISC prefers to invest in sectors where Marubeni Group has a network and expertise it can leverage in supporting its investee companies. The firm supports a range of their investees businesses from sales, overseas expansion, business strategy and planning, to capital policies and business management systems. iSigma Capital is no longer active in venture capital activities while it used to manage two venture capital funds in the past.
- Type
- Private Equity Firm
- Headquarters
- Tokyo, Tokyo, Japan
- Est. cheque size
- $262K–$2M
- Sectors
- Diversified
- Regions
- Asia
- Strategies
- Buyout
Where they invest
From deals and portfolio companies on record
Most frequent rounds
- —30
Across 31 deals
Portfolio sectors
- Consumer Products5
- Materials4
- Food3
- Chemicals2
- Healthcare2
Across 31 companies
Portfolio countries
- Japan31
Across 31 companies
Recent investments
Newest 5 of 31
- ——
Long Life Group
Aug 2026 · —
- ——
Osaka Sanitary
Jun 2026 · —
- —$20.1M
MIKUNI SHOJI Co., Ltd.
Feb 2026 · —
- ——
Otsu Medical Skin Center Co., Ltd.
Jan 2026 · —
- ——
Daibikai Medical Corporation
Jan 2026 · —
Offices
1 location
- Tokyo, Tokyo, JapanHQ
Questions about iSigma Capital
How much does iSigma Capital invest per deal?
Based on the size of its funds, iSigma Capital writes estimated cheques of $262K–$2M. Lead cheques usually sit at the top of that range and follow-on cheques lower.
How much capital does iSigma Capital have left to invest?
iSigma Capital has an estimated $97.6M in dry powder: capital it has raised but not yet invested.
What has iSigma Capital invested in recently?
Recent investments include Long Life Group, Osaka Sanitary and MIKUNI SHOJI Co., Ltd.. It made 5 investments in the last 12 months.