ETF industry topped $1 trillion in net inflows by mid-2026, led by low-cost broad-market index funds and Vanguard’s rise to first place, while thematic ETFs struggle with sub-1.0 Sharpe ratios. Meanwhile, SPDR S&P 500 ETF faced selling pressure from tech and AI stocks, dragging major US indexes lower on June 23.
The ETF sector recorded over $1 trillion in net inflows before the midpoint of 2026 across more than 5,400 funds, driven primarily by low-cost, broad-market index products. Vanguard claimed the top spot in inflows for the first time, reshaping the competitive landscape among major providers such as Schwab and Fidelity.
SPDR S&P 500 ETF saw shares decline as a continued selloff in technology and AI sectors pulled the S&P 500 down on June 23. This marked the ETF’s first back-to-back declines in three weeks, reflecting heightened sector volatility.
Nearly 400 thematic ETFs now manage roughly $300 billion, yet over 60% post Sharpe ratios below 1.0, indicating poor risk-adjusted performance. Inconsistent fund construction among similarly labeled ETFs has made comparisons difficult for advisors and investors.
