(Bloomberg) -- Bloomberg’s inaugural ranking of hedge fund manager income shows that the top 10 individuals reaped approximately $7.7 billion last year. Bloomberg used Securities and Exchange Commission filings, company websites and news reporting to determine assets under management. Figures are for the start of 2018 and don’t include asset inflows and outflows. Fee details were taken from SEC filings and reporting. Where there was no disclosure, Bloomberg assumed a 2 percent management fee and 20 percent performance fee. Management fees aren’t included as part of the profits. Some firms run dozens of individual funds and strategies.