Joe Cavatoni, who ran BlackRock Inc.’s Americas iShares capital markets team, is leaving, according to a memo provided by the firm.

Cavatoni, who worked at BlackRock for more than six years, helped lead several exchange-traded fund technology initiatives, including improving market liquidity, client access to best execution, and price transparency and discovery, according to the memo. Samara Epstein Cohen, who rejoined New York-based BlackRock in February, is now head of U.S. iShares capital markets. She was previously a managing director at Goldman Sachs Group Inc.

Barron’s reported the departure earlier Friday.

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