BlackRock’s share of ETF inflows drops to 55% amid rising competition

The Big Three’s combined share of US ETF inflows has fallen from roughly 80% to approximately 55%, a decline that would have seemed unthinkable just a few years ago when the trio’s dominance appeared almost structural. Together, these firms still manage north of $30 trillion in assets. But the flow of new money is increasingly finding its way elsewhere.

The numbers behind the shift

January 2026 offers a useful snapshot of how the competitive landscape is evolving. US ETF inflows for the month totaled an estimated $156 billion. Vanguard captured roughly $49 billion of that haul, while BlackRock’s iShares platform pulled in about $19 billion.

That gap between the two largest players is notable on its own. But the more telling figure is how much flowed to everyone else: nearly $88 billion, or more than 56% of the month’s total, went to firms outside the traditional power trio.

BlackRock reported $130 billion in total inflows during the first quarter of 2026 and followed that up with $192 billion in Q2. By the end of 2025, BlackRock’s assets under management had reached approximately $14 trillion, with iShares ETFs accounting for over $5.4 trillion of that figure. State Street managed roughly $5.7 trillion in total assets at the same point.

What’s driving the erosion

Active ETFs have become a major growth category. For decades, the ETF wrapper was synonymous with passive index tracking, a format that naturally favored scale players who could offer the lowest fees on the broadest benchmarks. Active strategies flip that equation, creating openings for firms that couldn’t compete on a basis-point-shaving race to the bottom.

Historical context

Historically, these firms controlled approximately 74% of US equity ETF market share. The 55% flow share figure represents a meaningful dilution from the 80% level that prevailed in recent years. Flow share tends to be a leading indicator of future AUM share, since today’s inflows become tomorrow’s asset base.

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