Blue Whale Capital This story is available exclusively to Insider subscribers. Become an Insider and start reading now. Just over three years ago, Blue Whale Capital launched with £25 million from legendary investor Peter Hargreaves. The fund now has £700 million assets under management and has returned 75% to investors since inception. The portfolio manager and co-founder, Stephen Yiu breaks down his strategy for success and his approach to stock picking. Over the course of three and a half years, portfolio manager Stephen Yiu and four investment analysts transformed Blue Whale Capital from a start-up investment firm with £25 million assets under management to a major player in the UK market.