Key Takeaways
- Index funds comprised 50% of total U.S. equity fund AUM in 2023
- 60% of new U.S. fund inflows went to passive index products in 2023
- Retirement accounts allocated 45% to index funds by end-2023
- The index industry saw net inflows of $1.2 trillion into passive funds globally in 2023
- U.S. index ETFs recorded $800 billion net inflows in 2023, up 15% from 2022
- European passive index funds attracted €250 billion inflows in 2023
- BlackRock's iShares held 38% U.S. ETF market share in index products end-2023
- Vanguard commanded 28% share of U.S. index mutual fund market in 2023
- State Street's SPDRs captured 15% of U.S. equity ETF market share 2023
- In 2023, the global exchange-traded fund (ETF) industry, dominated by index-tracking products, managed assets under management (AUM) totaling $11.5 trillion, marking a 20% year-over-year increase
- The U.S. index mutual fund and ETF market reached $13.2 trillion in AUM by Q4 2023, representing 48% of total U.S. fund assets
- Europe's index fund industry AUM grew to €2.1 trillion in 2023, with passive strategies comprising 42% of total UCITS assets
- S&P 500 index returned 24.2% total return in 2023
- Nasdaq-100 index delivered 55.1% return in 2023, outperforming broader markets
- Dow Jones Industrial Average gained 13.7% in 2023
In 2023, passive index investing dominated flows and growth, with passive outperforming and index ETFs expanding worldwide.
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Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
Marcus Engström. (2026, February 13). Index Industry Statistics. Gitnux. https://gitnux.org/index-industry-statistics
Marcus Engström. "Index Industry Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/index-industry-statistics.
Marcus Engström. 2026. "Index Industry Statistics." Gitnux. https://gitnux.org/index-industry-statistics.
Sources & references
55 datasets cited across this report · attribution is report-level

