Hudson River Trading is a New York-based quantitative trading firm with a strategic venture investment platform that backs growth companies solving problems across financial and technology markets. It invests in seed and early-stage companies, has acted as a co-lead investor, and focuses on areas tied to capital markets, trading infrastructure, crypto and blockchain, fintech, AI infrastructure, cybersecurity, hardware, semiconductors and sports markets. The firm primarily invests in the United States, with additional Singapore exposure, and is relevant for founders building market-structure, financial technology and frontier infrastructure businesses.