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Senior Two Sigma investment exec takes medical leave

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Alex Ginsburg, a 21-year veteran of Two Sigma, the New York-based, tech-driven hedge fund firm founded by John Overdeck and David Siegel, has taken medical leave from his role as Chief Investment Officer for equities research, according to a report by Business Insider.

The report cites an unnamed source familiar with the matter as confirming that the company notified investors of the Ginsburg’s departure and announced it internally in mid-July. Ali-Milan Nekmouche, who has been with Two Sigma since 2004 and serves as chief data strategist, has been named as Ginsberg’s replacement.

Other recent personnel changes at the $60bn firm, which has been making headlines this year over an ongoing feud between founders Overdeck and Siegel, include the appointment of Jeff Penney and Timothy Reynolds as interim co-chief operating officers.

Two Sigma alerted investors to the risks posed to the firm by the Overdeck and Siegel’s inability to agree on a number of critical business matters, including corporate governance and succession plans, in a securities filing in March.

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