BlackRock ended the quarter with $4.6 trillion in assets under management, up 19 percent from a year ago.
Excluding a net non-cash tax expense and other one-time items, earnings were $4.89 a share, beating analysts' average forecast of $4.46 a share, according to Thomson Reuters I/B/E/S.
BlackRock's iShares exchange-traded funds business, which crossed $1 trillion in assets for the first time in June, drove the bulk of the asset manager's long-term net flows during the quarter. Of the $38 billion that investors poured into long-term funds during the quarter, 80 percent was into iShares funds.
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BlackRock said it had positive net flows across asset classes during the quarter, and fixed-income products led gains with $21.3 billion in long-term flows. Investors added $9.7 billion in net flows into its equity funds, $6.8 billion into multi-asset products, and $267 million into alternatives.
Revenue at BlackRock grew 12 percent to $2.8 billion, with revenue generated by performance fees paid by investors growing 29 percent to $115 million from a year earlier.
After the earnings announcement, the company's shares rose in pre-market trading. (Click here to get the latest quotes.)
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Last month, BlackRock disclosed that it may be facing possible civil charges by U.S. securities regulators over disclosures tied to a former portfolio manager whose personal investments raised the perception of a possible conflict.
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In a regulatory filing, BlackRock said its BlackRock Advisors unit had received a Wells notice from the U.S. Securities and Exchange Commission on June 17. The notice, which indicates potential enforcement action, concerned ex-employee Daniel J. Rice III, a former portfolio manager for Blackrock Energy & Resources.
—By Reuters. CNBC.com contributed to this report