ThirdStream Partners

ThirdStream Partners is a venture capital firm specializing in financial technologies and services. They invest in a broad spectrum of companies, from early-stage startups to later-stage private companies, focusing on areas where technology combined with scientifically-informed insights promote more efficient financial outcomes by reducing costs, increasing transparency, or improving returns.

The firm's team brings decades of experience from firms that pioneered the application of quantitative, computer-driven approaches in the finance industry. Prior to founding ThirdStream Partners, the principals led Barclays Global Investors, at the time the world’s largest quantitative investment management firm, which was acquired by BlackRock in 2009. They bring not only capital but also strategic insight, operational expertise, and long-term partnership to the companies they support.

ThirdStream Partners has made 38 investments, with their latest investment in OneAM as part of their Seed VC on September 30, 2025. Their portfolio includes companies such as Climate Vault, NU Blockchain Technologies, and Inference Analytics, Inc. The firm focuses on areas where technology combined with scientifically-informed insights promote more efficient financial outcomes by reducing costs, increasing transparency, or improving returns.