Mitsui Sumitomo Insurance
Mitsui Sumitomo Insurance is a seed to Series C stage investment firm. It has made 13 investments. Average disclosed round size is $70.8M (across 6 rounds with reported amounts).
Portfolio
13
Fund Size
—
Top Stage
Series A
Last 12 Mo
0
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
16 investments
| Company | Round | Amount | Date |
|---|---|---|---|
| OONESTRUCTION | Unknown | — | Jan 2026 |
| TTokyo Artisan Intelligence | Series B | — | Jun 2025 |
| OOpenHeart | Seed | — | Jan 2025 |
| TTokyo Artisan Intelligence | Unknown | — | Nov 2024 |
 Upstream Security | Series C | $62M | Jan 2021 |
 chatbook | Unknown | $1M | Dec 2019 |
 Toreta | Growth | — | Jan 2018 |
 Kabuku | Series A | $6.1M | Nov 2015 |
| Kabuku | Seed | $3.3M | Jan 2015 |
 Aibono | Series A | $2.5M | — |
 Smart Craft | Series A | — | — |
| Ttripla | Series C | — | — |
| OOpenHeart | Series A | — | — |
| AAirato | Series A | — | — |
| IiHeart Japan | Series D | — | — |
 Hippo | Unknown | $350M | — |
Top Co-Investors
Salesforce2 shared
Dentsu Ventures2 shared
Global Brain Corporation2 shared
Salesforce Ventures1 shared
ITOCHU Corporation1 shared
World Innovation Lab1 shared
NTT DOCOMO Ventures1 shared
Eight Roads1 shared
InnoVen Capital1 shared
Rebright Partners1 shared
Omron Ventures1 shared
Mizuho Capital1 shared
SMBC Venture Capital1 shared
La Maison Partners1 shared
Glilot Capital Partners1 shared
Volvo Group Venture Capital1 shared
Nationwide1 shared
Delek US1 shared
Cisco Investments1 shared
Last updated: 20 October 2026