Citadel, Ken Griffin's $63bn Miami-based hedge fund firm, which, according to LCH Investments, is the most profitable hedge fund of all time, lost money in May, with its flagship Wellington fund down 0.8%, according to a report by Business Insider.

The loss pared year-to-date returns to 7% as of the end of May, tracing the S&P 500, which is up more than 11% so far in 2024 on the back of an almost 5% mega tech stock-driven leap in May on the back of megacap stocks like Nvidia.

Citadel's rivals had a better month, with Schonfeld Strategic Advisors up 1.3%, taking YTD gains to 8.2%, and Sculptor Capital's multi-strategy fund now up 6.8% in the first five months of the year, following a 1.2% gain in May.

Point72 and Millennium returned 1% and 0.8% last month, bringing their 2024 gains to 6.9% and 5.8% respectively.