Vanguard Group has surpassed BlackRock (BLK) to become the largest exchange-traded fund issuer in the US, with about $4.39 trillion in assets across its US-listed ETFs, Bloomberg reported Friday.

The milestone follows approximately $13 billion in net inflows in the latest session, pushing Vanguard's ETF assets above the roughly $4.36 trillion managed by BlackRock, according to the report.

Vanguard has attracted about $291 billion of ETF inflows so far this year, compared with nearly $120 billion for BlackRock, the report said.

(Market Chatter news is derived from conversations with market professionals globally. This information is believed to be from reliable sources but may include rumor and speculation. Accuracy is not guaranteed.)

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