Cambrian

Cambrian is an early-stage venture capital firm focused exclusively on US fintech startups. Founded and led by Rex Salisbury — a former partner at Andreessen Horowitz (a16z) who helped launch its fintech vertical — the firm operates as a solo-GP fund based in San Francisco, investing at the pre-seed and seed stages. Beyond writing checks, Cambrian offers founders access to a curated network of over 1,500 fintech builders, operators, and investors through a private Slack community. Rex also runs a fintech-focused podcast and newsletter, creating additional touchpoints for deal flow, ecosystem engagement, and portfolio support. Cambrian's sector focus spans a wide range of fintech verticals, including embedded fintech, insurtech, BankTech, wealthtech, payments, lending, identity and fraud, HR x fintech, and healthtech x fintech. The firm typically writes checks ranging from $300K to $1M+, functioning as a lead, co-lead, or participant. Portfolio companies include OatFi, Every, Anatomy, LightSpun, Keep, Oyster, Salsa, and Paid. The fund's LP base includes operators and founders from notable fintech companies such as SoFi, Plaid, Alloy, Betterment, Melio, and Nium, who also serve as a resource network for portfolio companies.