ETF statistics at a glance
Exchange-traded funds have moved from a niche wrapper to one of the largest containers for investment assets in the U.S. market. The current numbers show a market that is broad, crowded, and still expanding, with the biggest gains coming from scale rather than novelty.
Key takeaways
- At year-end 2024, the U.S. ETF market had 3,637 funds and $10.3 trillion in total net assets (ICI 2025 Fact Book).
- The U.S. ETF market accounted for 71% of the $14.4 trillion in ETF net assets worldwide at year-end 2024 (ICI 2025 Fact Book).
- ETF net assets in the United States represented 26% of assets managed by U.S. investment companies at year-end 2024 (ICI 2025 Fact Book).
- ETF net assets increased from $66 billion in 2000 to $10.3 trillion in 2024 (ICI 2025 Fact Book).
- In 2024, 13% of U.S. households, or 16.9 million households, held ETFs (ICI 2025 Fact Book).
Contents
- How large the ETF market is
- Which ETF categories hold the most assets
- How ETF ownership looks in households
- What fees and access look like
- How ETF launches, closures, and conversions are changing the market
- What active ETF growth says about the industry
- How advisers and investors actually use ETFs
- What the concentration numbers imply
How large the ETF market is
The scale of the U.S. ETF market is the first statistic that matters because it explains almost everything else that follows.
At year-end 2024, the U.S. ETF market had 3,637 funds and $10.3 trillion in total net assets (ICI 2025 Fact Book). That asset base is not just large in absolute terms; it also dominates the global ETF landscape. The U.S. market accounted for 71% of the $14.4 trillion in ETF net assets worldwide at year-end 2024 (ICI 2025 Fact Book).
ETF growth has become a story of persistent asset accumulation, not just product proliferation.
The long-run trend is even more striking. ETF net assets increased from $66 billion in 2000 to $10.3 trillion in 2024 (ICI 2025 Fact Book). The number of U.S. ETFs rose from 80 in 2000 to 3,637 in 2024 (ICI 2025 Fact Book). That means the market expanded along two dimensions at once: more products and much larger aggregate assets.
A useful way to read the market is as a share of the broader investment-company universe. ETF net assets in the United States represented 26% of assets managed by U.S. investment companies at year-end 2024 (ICI 2025 Fact Book). That figure matters because it shows ETFs are no longer an edge case. They are a core channel for investment exposure.
A compact growth snapshot
| Measure | 2000 | 2010 | 2024 |
|---|---|---|---|
| U.S. ETF count | 80 | - | 3,637 |
| U.S. ETF net assets | $66 billion | $992 billion | $10.3 trillion |
| Notes | Early market base (ICI 2025 Fact Book) | Year-end 2010 level (ICI 2025 Fact Book) | Year-end 2024 level (ICI 2025 Fact Book) |
That table shows the two reference points that best capture the market’s change. By year-end 2010, ETF net assets had already reached $992 billion (ICI 2025 Fact Book). By year-end 2024, that figure stood at $10.3 trillion (ICI 2025 Fact Book). The market did not merely recover or stabilize; it compounded into a system-level product category.
Which ETF categories hold the most assets
The ETF market is large, but it is not evenly distributed across strategies. Large-cap domestic equity ETFs are still the central pillar of the industry.
Large-cap domestic equity ETFs held $3.8 trillion in net assets at year-end 2024 (ICI 2025 Fact Book). That represented 37% of all ETF net assets at the same date (ICI 2025 Fact Book). In practical terms, more than one-third of all ETF dollars sat in one broad category of domestic equity exposure.
Bond ETFs are the other major anchor. They held $1.8 trillion in net assets at year-end 2024 (ICI 2025 Fact Book), equal to 17% of all ETF net assets (ICI 2025 Fact Book). The combination of large-cap domestic equity ETFs and bond ETFs shows that the market is still grounded in broad, core allocations rather than entirely in specialized themes.
Category comparison
| Category | Net assets at year-end 2024 | Share of all ETF net assets |
|---|---|---|
| Large-cap domestic equity ETFs | $3.8 trillion | 37% (ICI 2025 Fact Book) |
| Bond ETFs | $1.8 trillion | 17% (ICI 2025 Fact Book) |
| All other ETF categories combined | $4.7 trillion | 46% (calculated from ICI 2025 Fact Book figures) |
The third row is a simple remainder, derived from the reported totals. It shows that while the leading categories are dominant, nearly half of ETF assets still sit outside those two buckets. That spread suggests meaningful depth in other segments, even if the largest categories still set the tone.
How ETF ownership looks in households
Market size does not always tell you how broadly a product is held. ETF ownership statistics fill in that gap.
In 2024, 13% of U.S. households, or 16.9 million households, held ETFs (ICI 2025 Fact Book). That is a meaningful penetration rate for a product that was once thought of as a specialist tool. It also suggests that ETF ownership is now part of mainstream household investing, even if adoption is far from universal.
The profile of ETF-owning households helps explain why the category has become durable.
- 82% of ETF-owning households had IRAs in 2024 (ICI 2025 Fact Book).
- 78% had defined contribution retirement plan accounts in 2024 (ICI 2025 Fact Book).
- 78% said saving for retirement was a household financial goal for their ETF investments in 2024 (ICI 2025 Fact Book).
- Nearly 60% held ETFs inside IRAs in 2024 (ICI 2025 Fact Book).
Those figures point to a strong retirement-account footprint. ETFs are not just held in taxable brokerage accounts; they are also embedded in the retirement planning machinery that many households rely on.
Household ownership profile
| Household characteristic | 2024 share among ETF-owning households |
|---|---|
| Had IRAs | 82% (ICI 2025 Fact Book) |
| Had defined contribution retirement plan accounts | 78% (ICI 2025 Fact Book) |
| Said retirement saving was a financial goal | 78% (ICI 2025 Fact Book) |
| Held ETFs inside IRAs | Nearly 60% (ICI 2025 Fact Book) |
| Also owned mutual funds | 84% (ICI 2025 Fact Book) |
The mutual-fund overlap is especially important. In 2024, 84% of ETF-owning households also owned mutual funds (ICI 2025 Fact Book). That means ETF use is often additive rather than substitutive. Many households are not choosing between funds and ETFs in a binary way; they are using both.
At the same time, of households that owned mutual funds, 20% also owned ETFs in 2024 (ICI 2025 Fact Book). That smaller cross-ownership figure shows ETFs have penetrated part of the mutual-fund base, but not all of it.
What fees and access look like
A major part of the ETF story is cost. Investors do not just buy ETFs for convenience; they also respond to pricing, tax structure, and trading flexibility.
In 2024, 98% of ETF-owning households said ETF fees and expenses were important to their investment decision (ICI 2025 Fact Book). The same share, 98%, said ETFs’ cost effectiveness was important to their investment decision (ICI 2025 Fact Book). Those are unusually strong responses and they reinforce a simple point: price remains a primary ETF selling point.
The reported fee data fit that investor behavior.
- The simple average expense ratio of index equity ETFs was 0.45% in 2024 (ICI 2025 Fact Book).
- The asset-weighted average expense ratio of index equity ETFs was 0.14% in 2024 (ICI 2025 Fact Book).
- Some ETF distribution fees bundled into the expense ratio are typically no more than 0.05% (ICI 2025 Fact Book).
The gap between the simple average and the asset-weighted average matters. It suggests assets are concentrated in lower-cost products, not evenly distributed across the fee schedule.
Another statistic helps explain why ETF ownership can be appealing: more than 90% of ETF-owning households said they valued the ability to sell ETF shares any time during the day in 2024 (ICI 2025 Fact Book). That trading flexibility is part of the product’s identity and one reason ETFs keep attracting both self-directed and advised investors.
How ETF launches, closures, and conversions are changing the market
The ETF market looks huge, but it is also still active underneath the surface. Fund launches and closures remain a normal part of how the category evolves.
In 2024, 757 ETFs were launched in the U.S. market, while 174 ETFs were liquidated or merged (ICI 2025 Fact Book). Over the prior decade, 3,720 new ETFs were offered to investors, and 1,280 ETFs were liquidated or merged with another fund (ICI 2025 Fact Book).
That combination tells you two things. First, the market is still open to innovation and repackaging. Second, not every launch becomes a lasting franchise. The ETF shelf is large, but not every product survives.
A particularly important trend is conversion from mutual funds into ETFs.
- From the beginning of 2021 through 2024, 130 mutual funds converted to ETFs (ICI 2025 Fact Book).
- Those 130 converting funds held $78 billion in total net assets at the time of conversion (ICI 2025 Fact Book).
- Those conversions represented 2.4% of ETFs’ $3.3 trillion in net issuance over the same period (ICI 2025 Fact Book).
This does not mean conversions are the whole story. But it does show that structural migration into the ETF wrapper has become a measurable part of net issuance.
Launch and closure snapshot
| Item | 2024 / recent period | Source label |
|---|---|---|
| New ETF launches in 2024 | 757 | ICI 2025 Fact Book |
| ETFs liquidated or merged in 2024 | 174 | ICI 2025 Fact Book |
| New ETFs offered over prior decade | 3,720 | ICI 2025 Fact Book |
| ETFs liquidated or merged over prior decade | 1,280 | ICI 2025 Fact Book |
| Mutual funds converted to ETFs from 2021 through 2024 | 130 | ICI 2025 Fact Book |
What active ETF growth says about the industry
One of the biggest changes in the ETF market is the rise of active management inside the ETF wrapper.
At year-end 2024, actively managed ETFs represented 8.3% of ETF total net assets (ICI ETF FAQs). That is still a minority position, but it is large enough to matter. A separate SEC DERA active ETF report, published in February 2026, estimated that active ETFs comprised approximately 9% of ETF assets by the end of 2024. Those two figures are close enough to suggest the same broad picture: active ETFs are no longer fringe products.
The active ETF data show strong asset growth:
- Active ETF AUM rose from $122 billion in 2020 to $768 billion in 2024 (SEC DERA active ETF report, Feb. 2026).
- Passive ETF AUM rose from $3,963 billion in 2020 to $7,709 billion in 2024 (SEC DERA active ETF report, Feb. 2026).
- The number of active ETF series increased from 412 in 2020 to 1,531 in 2024 (SEC DERA active ETF report, Feb. 2026).
- The number of passive ETF series increased from 1,661 in 2020 to 1,907 in 2024 (SEC DERA active ETF report, Feb. 2026).
- Active ETF series represented 45% of all ETF series in 2024, up from 20% in 2020 (SEC DERA active ETF report, Feb. 2026).
That last line is the clearest sign of change. Active ETFs are still a minority by assets, but they now account for a far larger share of the product lineup than they did four years earlier.
Active versus passive at a glance
| Measure | Active ETFs | Passive ETFs |
|---|---|---|
| AUM in 2024 | $768 billion (SEC DERA active ETF report, Feb. 2026) | $7,709 billion (SEC DERA active ETF report, Feb. 2026) |
| Series count in 2024 | 1,531 (SEC DERA active ETF report, Feb. 2026) | 1,907 (SEC DERA active ETF report, Feb. 2026) |
| Asset-weighted operating expenses | 0.49% (SEC DERA active ETF report, Feb. 2026) | 0.12% (SEC DERA active ETF report, Feb. 2026) |
| Equal-weighted operating expenses | 0.70% (SEC DERA active ETF report, Feb. 2026) | 0.45% (SEC DERA active ETF report, Feb. 2026) |
| Average portfolio turnover | 36% (SEC DERA active ETF report, Feb. 2026) | 31% (SEC DERA active ETF report, Feb. 2026) |
The expense and turnover figures show that active ETFs still tend to carry higher costs and more trading activity than passive ETFs. The reported passive ETF asset-weighted operating expenses also fell from 0.16% in 2020 to 0.12% in 2024 (SEC DERA active ETF report, Feb. 2026), which reinforces the cost advantage of the passive side.
Active ETF portfolio turnover also declined at the median, falling from 49.50% in 2020 to 35% in 2024 (SEC DERA active ETF report, Feb. 2026). That suggests the active ETF category is maturing rather than simply churning.
How advisers and investors actually use ETFs
The distribution side of the market matters because ETFs are not only bought by households directly. Advisers and brokers shape a large amount of ETF usage.
In 2024, full-service brokers had 31% of their clients’ household assets invested in ETFs (ICI 2025 Fact Book). Fee-based advisers had 45% of their clients’ household assets invested in ETFs (ICI 2025 Fact Book). Those shares were much lower in 2013, when full-service brokers had 9% and fee-based advisers had 18% of clients’ household assets invested in ETFs (ICI 2025 Fact Book).
The change is substantial. It suggests that ETF adoption in advice channels has not been static; it has accelerated materially over the past decade.
A few more ownership statistics help clarify the investor base:
- 51% of ETF-owning households were willing to take substantial or above-average investment risk in 2024 (ICI 2025 Fact Book).
- That 51% risk-tolerance share compared with 24% of all U.S. households in 2024 (ICI 2025 Fact Book).
- That 51% risk-tolerance share compared with 32% of mutual fund-owning households in 2024 (ICI 2025 Fact Book).
- 93% of ETF-owning households owned equity ETFs in 2024 (ICI 2025 Fact Book).
- More than one-third of ETF-owning households were Millennials in 2024 (ICI 2025 Fact Book).
- Nearly half were ages 35 to 64 in 2024 (ICI 2025 Fact Book).
- More than two-thirds were employed in 2024 (ICI 2025 Fact Book).
This is not a narrow demographic profile. It is a relatively working-age, employed, retirement-aware household base with a meaningful tolerance for risk and a strong preference for low-cost, flexible exposure.
What the concentration numbers imply
Large markets often become concentrated, and ETFs are no exception. The distribution of assets across families and product types matters because it affects how competitive the market really is.
According to the SEC DERA active ETF report published in February 2026, the largest four passive ETF families controlled 87% of passive ETF market share in 2024, and the largest ten controlled 96% (SEC DERA active ETF report, Feb. 2026). The Herfindahl-Hirschman Index for passive ETF families was 0.28 in 2024 (SEC DERA active ETF report, Feb. 2026).
Active ETFs were less concentrated but still not fragmented. The largest four active ETF families controlled 58% of active ETF market share in 2024, while the largest ten controlled 80% (SEC DERA active ETF report, Feb. 2026). The Herfindahl-Hirschman Index for active ETF families was 0.11 in 2024 (SEC DERA active ETF report, Feb. 2026).
Those concentration statistics suggest a market with room for product innovation but strong gravity toward a small number of dominant issuers. In other words, the ETF universe may contain thousands of funds, but the economics of the market are still controlled by a relatively small set of families.
Derivatives use in ETF portfolios
The active-versus-passive comparison also shows that funds are not structured the same way under the hood.
- Passive ETFs held equity derivatives in 41.97% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
- Passive ETFs held foreign-exchange derivatives in 6.32% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
- Active ETFs held commodity derivatives in 3.91% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
- Active ETFs held credit derivatives in 3.73% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
- Active ETFs held equity derivatives in 39.85% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
- Active ETFs held foreign-exchange derivatives in 6.83% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
- Active ETFs held interest-rate derivatives in 11.49% of series in 2024 (SEC DERA active ETF report, Feb. 2026).
This derivative usage points to complexity that is easy to miss when looking only at headline AUM. ETF structures can be broad index vehicles, active strategies, or specialized risk-managed wrappers, and those differences show up in portfolio construction.
The bottom line for readers tracking ETF statistics
The most important ETF statistics are not just the largest asset figures. They are the relationships between scale, ownership, fees, and product mix. The U.S. market now sits at 3,637 funds and $10.3 trillion in assets (ICI 2025 Fact Book), dominates global ETF assets (ICI 2025 Fact Book), and reaches 16.9 million U.S. households (ICI 2025 Fact Book). At the same time, active ETFs are growing, cost pressure remains intense, and the market continues to concentrate around a handful of dominant families.