Investing.com -- BlackRock shares rose about 3% in premarket trading Wednesday after the asset manager reported second-quarter earnings that comfortably beat expectations, driven by record inflows and strong organic growth across its platform.

The company posted earnings per share of $13.91, well above the $12.57 analysts had forecast, on revenue of $7.08 billion versus a $6.72 billion consensus estimate. Revenue rose 31% year-over-year, growth that BlackRock said reflected favorable markets, organic base fee growth, contributions from the HPS transaction, higher performance fees, and increased technology services and subscription revenue.

Assets under management reached $15.3 trillion, up 22% year-over-year, following $868 billion in net inflows over the trailing twelve months and 10% organic base fee growth. The company reported record first-half net inflows of $321 billion, including $192 billion in the second quarter alone, with gains broad-based across ETFs, private markets, active fixed income and systematic equity strategies.

Adjusted operating income rose 39% to $2.92 billion, with adjusted operating margin expanding to 45.9% from 43.3% a year earlier.

“Market fundamentals are strong and well supported, with higher margins and earnings momentum catalyzed by new technology," said Laurence D. Fink, Chairman and CEO of BlackRock.

"Our momentum is accelerating, and I’ve never been more optimistic about the growth ahead," he added.

BlackRock repurchased $450 million of shares during the quarter and said it plans to increase its quarterly share repurchase pace to $550 million.