Ray Dalio, the 61-year old founder of Bridgewater Associates, may look like an ageing rock star but his unconventional approach gets results, says The New Yorker magazine in a profile in this week’s issue.

John Cassidy describes Dalio as looking a "bit like an ageing member of a British progressive rock group" but says that what distinguishes him from rival hedge fund managers "is the depth of his economic analysis and the pretensions of his intellectual ambition."