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William Bollinger
Hedge fund
Rank 2017
275=
Worth
£450m
Rise/fall
£50m

Former Goldman Sachs analyst Bollinger, 61, co-founded the London-based Egerton Capital hedge fund with John Armitage (qv) in 1994. Although now retired, the Irishman retains a 50% stake in Egerton's parent. Profits rose strongly to £135.8m in 2015-16, with canny bets against energy stocks making gains of £1bn for Egerton. Bollinger's 50% stake and share of profits and fees easily take him to £450m.