Xavier Rolet is the CEO of CQS, billionaire Michael Hintze’s London-based hedge fund firm. He was named to the post in December 2018 with the goal of expanding the firm beyond its credit market focus. The hedge fund had $18.1 billion under management at the time.
In January 2020, it was announced Rolet would step down just a year after taking the role. CQS said he was stepping down for “reasons unconnected with CQS." 
Rolet served as the chief executive officer of the London Stock Exchange from 2009 to 2017. He succeeded Clara Furse on May 20, 2009.  Rolet joined the board of directors on March 16, 2009. He stepped down as the CEO of LSE on November 29, 2017. 
While heading up the LSE, Rolet pushed to revamp the exchange, including making an ultimately unsuccessful move to merge it with its German rival, Deutsche Boerse. He overhauled the LSE’s technology, invested in blockchain database software, and executed a number of deals including taking a 51 percent stake in Turquoise, a former rival, and buying Frank Russell Co.
He stepped down in 2010 as a director of the LSE's main clearer at the time - LCH.Clearnet - just weeks after launching a review that could have led to the LSE cancelling its contract with the clearing house.
Rolet previously served as head of Lehman Brothers Holdings Inc. in France from July 2007 to October 2008 until Nomura Holdings purchased Lehman's European investment bank in 2008 when the firm went bankrupt.
He also ran the equity trading operations for Goldman Sachs Group, European equities at Credit Suisse First Boston and Dresdner Kleinwort Benson before he joined Lehman in 2000. He also was head of the LSE's strategic advisory committee.
After joining LSE Group, Rolet served as vice chairman of the board of directors of the World Federation of Exchanges. However, in 2013, the exchange group withdrew from the WFE due to "divergent interests."
Rolet won the Risk.net 2018 Lifetime Achievement award on November 18, 2017 at the Risk Awards. 
Rolet has a master's degree in business administration from Columbia University.
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