Vanguard Group eclipsed BlackRock Inc. as the top U.S. ETF issuer, pushing its assets under management to roughly $4.39 trillion across 116 listed funds. The surge followed a $13 billion inflow that lifted Vanguard past BlackRock’s $4.36 trillion benchmark, ending a two‑decade reign in a $15.2 trillion industry. Investors credited the shift to Vanguard’s low‑cost, buy‑and‑hold appeal.

Vanguard’s climb reflects years of steady market share erosion from BlackRock, whose dominance peaked at about 60% two decades ago. The firm’s flagship S&P 500 ETF, VOO, attracted roughly $113 billion YTD, becoming the first ETF to breach the $1 trillion mark last week. Low‑fee, core‑focused products have consistently drawn retail investors and advisors through volatile cycles.

Despite trailing in total ETF assets, BlackRock still commands higher fee revenue, with an average expense ratio of 16 basis points versus Vanguard’s four. The fee differential underscores iShares’ broader product slate, which serves institutional clients and can generate more volatile flows. Vanguard’s ascension signals that ultra‑low‑cost, index‑centric funds remain the most resilient segment for investors.

Strategists note the shift is “symbolic, yet robotic,” highlighting Vanguard’s disciplined inflows that ignore market noise. With ETF inflows of $291 billion in 2026—about $100 billion ahead of BlackRock—the firm proves its model scales. The real test will be whether Vanguard can sustain growth while keeping fees at four basis points.