Patrick O'Shaughnessy is the Chairman Emeritus of O'Shaughnessy Asset Management, the founder of Colossus, and the founder and CEO of Positive Sum. He is an investor, author, and podcaster who has devoted his career to understanding the world's best investors and entrepreneurs.

Under his leadership, Colossus has become one of the largest investing-focused podcast networks in the world, producing shows including the flagship Invest Like the Best, which he hosts. At Positive Sum, he invests in early-stage companies creating and reinventing categories, with portfolio companies including Tegus, ID.me, Etched, and Vanta.

After starting as an intern at his father's quantitative asset management firm in 2008, O'Shaughnessy became CEO in 2018. He became known for his deep research into factor-based investing, his quantitative approach to stock selection, and his ability to communicate complex investment ideas to a broad audience.

His accomplishments include growing OSAM into a leading custom indexing platform before its acquisition by Franklin Templeton in 2021, launching Invest Like the Best in 2016 which was named among The Wall Street Journal's "5 Investment Podcasts You Should Listen To," founding Colossus in 2020 to build a media platform around his vision of learning in public, and authoring “Millennial Money: How Young Investors Can Build a Fortune in 2014.”