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Venture capital firm

ThirdStream Partners

A US investment firm backing financial technology and financial services companies

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About ThirdStream Partners

ThirdStream Partners LLC invests in venture and strategic opportunities across financial technology and financial services, deploying capital through principal investments that range from early-stage startups to later-stage private companies. The firm partners with companies working on financial markets, institutions and infrastructure. Its team's experience comes from firms that applied quantitative, computer-driven methods within the finance industry; prior to founding ThirdStream Partners, its principals led Barclays Global Investors, which at the time was a large quantitative investment management firm and was acquired by BlackRock in 2009. Alongside capital, the firm says it provides strategic insight, operational expertise and longer-term partnership to the companies it supports. ThirdStream Partners is based in the United States and focuses its investing activity on the fintech sector.

Profile written by TrustList from the business's own published information, Sep 2026.

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