Ole Andreas Halvorsen (born 1961) is a Norwegian-American billionaire hedge fund manager. He is the CEO and a co-founder of the Connecticut-based hedge fund Viking Global Investors. Viking had $24 billion under management as of October, 2017. Halvorsen has consistently ranked among the top earning hedge fund managers, placing 11th in Forbes' 2012 rankings and 9th in 2015, according to Institutional Investor's Alpha.
Halvorsen is a protégé of hedge fund manager Julian Robertson. As of August 2022, his net worth was estimated at US$6.6 billion.
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