Interest rate trader Stevenson began his career as an
interest rate trader in 2008 at age 21 after winning a card game based on trading, initially being hired by
Citibank as an intern and then as a full employee. Stevenson has since said that he became "Citibank's most profitable trader, in the whole world" in 2011 with a peak $35 million profit achieved for the bank that year. Stevenson states that he generated this profit by trading based on the prediction that interest rates would not rise due to the impact of wealth inequality upon demand. However, his "most profitable trader" claim was disputed by eight of his former Citibank colleagues in a 2024
Financial Times article. Former colleagues stated that Stevenson could not have known his global ranking because Citibank did not maintain an official record of trader profitability. Stevenson has responded to the article by stating that "I stand by what I've said in the book, I have nothing further to add." writing a thesis titled "The Impact of Inequality on
Asset Prices When Households Care About Wealth". In 2021, he signed an
open letter to
Rishi Sunak alongside 29 other UK millionaires, calling on the then chancellor to introduce a wealth tax and stating that "instead of raising national insurance and taking £1,000 a year away from families on universal credit, the chancellor, who is a multimillionaire, should be taxing himself and people like me – people with wealth." He has also proposed limiting the length of time for which people can keep their wealth. In 2023, he featured in Steffan Roe Griffiths' short film,
Gary Stevenson – Life Out of Balance, and appeared on
BBC Politics Live. It was acquired by
Penguin Books in a six-figure deal, In 2025, Stevenson appeared on
Steven Bartlett's
The Diary of a CEO podcast and on
Piers Morgan Uncensored. == Books ==