According to State Street Global Advisors’ (SSgA) ETF Snapshot, assets in the ETF industry increased by $20.9 billion last month, PLANSPONSOR reports. At the end of March, 1,013 ETFs with assets totaling $1.06 trillion were being run by 35 ETF managers.

BlackRock, State Street and Vanguard were the top three managers in the U.S. ETF market. Together, they account for about 83% of the U.S. listed ETF market, according to the report.

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