Koyfin is a financial technology company founded in 2016 by Rob Koyfman, who is the CEO. The company aims to provide affordable and powerful investment research tools through an intuitive platform designed for both professional and individual investors. As of 2023, Koyfin has built a community of over 500,000 users.

Koyfin offers a comprehensive data and analytics platform that includes extensive market data covering stocks, ETFs, bonds, and economic indicators. Users can access advanced charting and dashboarding tools, perform fundamental stock analysis, and monitor market trends. The platform also features model portfolios for financial advisors and a mobile app for on-the-go updates. Koyfin provides both free and paid plans, catering to a diverse audience seeking sophisticated analytics at a lower cost compared to traditional financial data providers.