BlackRock ETF Inflows Share Falls to 55% as Active Competition Rises

BlackRock’s share of US ETF inflows has fallen to about 55% as competition intensifies, with more money flowing to smaller issuers. In January 2026, estimated total US ETF inflows were about $156 billion. Vanguard captured roughly $49 billion, while BlackRock’s iShares took around $19 billion. Nearly $88 billion—over 56% of the total—went to firms outside the “Big Three” (Vanguard, BlackRock, and State Street). The shift matters for future AUM. Flow share often leads asset share because today’s inflows become tomorrow’s base. BlackRock reported $130 billion in total inflows in Q1 2026 and $192 billion in Q2. By end-2025, BlackRock AUM was near $14 trillion, with iShares ETFs accounting for more than $5.4 trillion. State Street had about $5.7 trillion in total assets. What’s driving erosion: active ETFs and thematic strategies are growing faster than traditional passive index products. For years, passive ETFs rewarded scale and lowest fees, favoring large incumbents. Active strategies can create room for challengers that cannot win purely on fee compression. Historically, the Big Three controlled around 74% of US equity ETF market share. The current inflow share near 55% signals meaningful dilution from the roughly 80% level seen in recent years.