Colin Hall has an MBA from the Stanford University Graduate School of Business. He began his career in 1995 as a financial analyst at Morgan Stanley in private equity in New York. In 1997 he joined the Rhône Capital group, a private equity fund, where he held several positions over 10 years, in New York and then in London. In 2009, he co-founded a hedge fund, sponsored by Tiger Management (New York), where he worked until 2011. In 2012, he joined Sienna Capital, a wholly-owned subsidiary of GBL grouping together its alternative investments (private equity, debt funds, and funds with specific themes) as Managing Director. In 2016, he was appointed GBL Head of Investments.