Five Rings

Five Rings is a proprietary trading firm and quantitative research house headquartered in New York City. Founded in 2006, the firm trades globally across a wide range of asset classes including equities, commodities, currencies, and fixed income—using both discretionary and algorithmic strategies. It operates with a flat, team-based structure and is known for its collaborative culture, high-calibre technical talent, and emphasis on innovation. Five Rings relies on sophisticated modelling, real-time data analysis, and proprietary trading infrastructure to identify and capture inefficiencies in global markets. The firm is highly secretive but is widely recognised within the quant trading community for its performance and rigorous hiring standards, often competing with the likes of Jane Street, Hudson River Trading, and Citadel.