JB

Joyo Bank

Corporate VC

Joyo Bank is a Corporate VC firm based in Mito.

Corporate venture capital arm of Joyo Bank, a Japanese regional bank based in Mito; invests in sector-agnostic startups with emphasis on deep technology and sustainability, including advanced nuclear fusion, as part of its parent bank's strategic objectives.

Climate Tech
Deep Tech
Headquarters
Mito
Founded
1935
Portfolio Company
1
Total Investments
2
Last Investment
Apr 2025
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Indexed holds 1 portfolio company and 2 funding rounds for this investor. The full record is or through the API.

Investment Thesis

Sector-agnostic corporate venture arm (Joyo Capital Partners, est. 2021) with demonstrated interest in deep technology and sustainability, including advanced nuclear fusion startups.

It was founded in 1935. It has made 2 investments. Its portfolio includes CLAS. Focus areas include Climate Tech and Deep Tech.

Portfolio1

Co-investors4

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4 co-investors across 4 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×4 · 1 shared rounds

Investment History

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Joyo Bank on Indexed.vc
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