Cambrian is a solo-GP early-stage fintech fund based in San Francisco, founded by Rex Salisbury, a former investment banker, fintech software engineer, and fintech investor at Andreessen Horowitz. The firm writes $300K–$1M+ checks at pre-seed and seed stages, leading, co-leading, or participating in rounds, and activates a network of founders, investors, and operators to support portfolio companies with insights, funding, early hires, customers, and partnerships. Cambrian's portfolio includes OatFi, Anatomy, LightSpun, Keep Financial Services, Oyster, Salsa, and Paid. The fund takes a broad view across fintech verticals—consumer finance, HR, identity, fraud, banking infrastructure, wealth, lending, accounting, capital markets, insurtech, blockchain, payments, and more—believing that fintech is only 1% built. The firm is backed by iconic fintech founders and operates from Jackson Square in San Francisco.

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