equities  |  March 28, 2025

How active ETFs can help investors in the small- and mid-cap space

Potential benefits of actively managed exchange-traded funds.

 

Key Insights

  • Most U.S.-listed small- and mid-cap exchange-traded funds (ETFs) track passive indices, and some of the companies within these indices have no earnings.

  • Unlike mutual fund investors, ETF investors have limited options to access active strategies in the small- and mid-cap space.

  • The T. Rowe Price Small-Mid Cap ETF (TMSL) offers investors a low-cost, tax‑efficient, and active approach from a leading U.S. small- and mid-cap manager.

Christopher Murphy, CIMA®

Head of ETF Specialists

Sean Erb, CFA®

Lead Portfolio Analyst—Small- and Mid-Cap U.S Equities

Roughly 82% of the USD 837 billion1 small- and mid-cap exchange‑traded fund (ETF) assets is managed based on passive strategies and in line with one of three primary index providers: S&P, Russell, or the Center for Research in Security Prices (CRSP). (See “Small- and mid-cap ETF assets, by largest passive index”) However, the USD 10.7 trillion ETF market2 is changing, and actively managed ETFs are quickly becoming the fastest-growing category.

At the beginning of 2023, active ETFs held only 5.3% of the market but 75% of total ETF launches.2 By the end of 2024, that number increased to 8.4% of the market and 79% of total launches.2 This growth hasn’t necessarily reached across all asset classes, however. Investors show that they believe active management can work in the small- and mid-cap (SMID) space, but they are dramatically underserved in the ETF structure.

What is an active ETF?

In an active ETF, fund managers make decisions, based on a predetermined investment strategy, about what securities to overweight, underweight, exclude, or include relative to the benchmark index holdings. By comparison, a passive ETF attempts to replicate the index portfolio by holding the same or similar securities, or a representative sample, at the same proportions as the index.

Active ETFs generally seek to outperform their benchmark index rather than simply matching the return of that index. Wherever there are inefficiencies in the markets, such as in emerging markets or mid- and small-cap sectors, there are opportunities for active management to generate higher returns. Investors interested in these market sectors may want to consider active strategies.

Small- and mid-cap ETF assets, by largest passive index

(Fig. 1) The majority of small- and mid-cap ETF AUM is benchmarked across three main indices

Bar chart of small- and mid-cap exchange-traded fund assets by benchmark, where majority of AUM is within indices.

As of December 31, 2024. AUM also includes style segments. Due to rounding, figures may not add up precisely to the totals provided.
Source: FactSet (see Additional Disclosures).

How active ETFs work in the small- and mid-cap space

One challenge of investing in products indexed to small- and mid-cap benchmarks is that an index investor will seek to replicate the benchmark portfolio through owning the same securities or a representative sample. However, a significant number of companies within these indices have no earnings. Even the S&P indices, which have a profitability screen for inclusion, carry a meaningful exposure to non-earners. (See “Benchmarks have exposure to non-earners”)

Benchmarks have exposure to non-earners

(Fig. 2) Percent of nonearning companies in S&P and Russell indices

Line chart of small- and mid-cap indices, where percent of companies that do not have earnings are represented.

As of December 31, 2024.
Source: FactSet (see Additional Disclosures). Analysis by T. Rowe Price.
Past performance cannot guarantee future results.

This dynamic has long been an important part of the case for active investing in the small- and mid-cap space. Strong active managers will generally focus on higher‑quality companies and will underweight non-earners in their portfolios. Even when active managers do choose to own non-earners, they are vetted, and the manager will typically have a view on their path to profitability. The value in avoiding, or at a minimum being underweight in, non-earners is clear. Profitable companies in the Russell 2000 Index have outperformed non-earners by 1,151% since December 31, 1999.3

As information has become more readily available to all investors, markets have generally become more efficient. Yet the small- and mid-cap equity markets remain relatively inefficient compared with large-cap markets. These asset classes tend to be less followed by sell-side analysts than large-cap equities, which gives investors with access to dedicated analysts the potential to derive an information advantage that can lead to increased alpha potential. (See “Average number of sell-side estimates per S&P index.”)

A dedicated investment team to support portfolio manager decision-making is as important as ever. Small- and mid-cap equities remain a fertile hunting ground for investment managers with the right resources to uncover alpha potential.

Average number of sell-side estimates per S&P index

(Fig. 3) Lower analyst coverage for asset classes shows market inefficiency, information gap

Bar chart of analyst coverage across indices, showing an information gap in the asset class compared with the S&P 500.

As of December 31, 2024.
Source: FactSet (see Additional Disclosures). Analysis by T. Rowe Price.

Index quality has also deteriorated

As the cost of being a public company has risen and the number of companies staying private for longer continues to grow, we have seen a decrease in publicly traded companies in the U.S., from more than 7,000 in 1998 to fewer than 3,400 today.4 As a result, the quality of small-cap indices has deteriorated significantly. (See “Benchmarks have exposure to non-earners.”) More than 40% of the Russell 2000 Index, and therefore 40% of the assets in ETFs that track the index, have experienced losses. A study by Furey Research Partners shows that the median return on equity of the Russell 2000 has fallen from 12.6% to 5.5% over the same period.5

Does the quality of an ETF really matter?

Investors define quality in many ways. To show a simple comparison, consider the Russell 2000 Defensive Index and the Russell 2000 Index. (See “Higher quality has outperformed over full market cycles.”) The Russell 2000 Defensive Index represents U.S. small-cap stocks that exhibit a combination of high return on assets, low debt to equity, low earnings variability, and low long- and short-term total return volatility. These factors are all associated with quality. At T. Rowe Price, our analysts and portfolio managers do not specifically screen for stocks with these characteristics, but our fundamental bottom-up stock selection process typically leads us to names with these and similar attributes. T. Rowe Price small-cap strategies tend to overweigh these characteristics relative to their respective benchmarks; the Russell 2000 Defensive Index is a suitable proxy for this analysis. T. Rowe Price’s active approach, with a focus on quality, has been successful over time.

Higher quality has outperformed over full market cycles

(Fig. 4) Cumulative excess return of Russell 2000 Defensive Index versus Russell 2000 Index

Line chart of cumulative excess return of two indices, showing that higher quality has outperformed over full market cycles.

As of December 31, 2024.
Source: Russell (see Additional Disclosures). T. Rowe Price analysis.
Past performance cannot guarantee future results.
For illustrative purposes only.

Active investment options remain limited

The majority of small- and mid-cap assets are invested in mutual funds over ETFs. (See “Active ETFs are underserved in the small- and mid-cap space.”) An investor’s decision to invest in these vehicles has several considerations:

  • The average mutual fund expense ratio is 111 basis points, while an ETF option tends to be lower priced. (The T. Rowe Price Small-Mid Cap ETF (TMSL) has an expense ratio of 55 basis points.)

  • Another common challenge for SMID investors is capacity: 20% of the assets under management (AUM) in these mutual funds are closed.6

  • Generally, ETFs are more tax-efficient than mutual funds. However, many investors are further limited by the perception that most ETFs are passive. Considering that the vast majority of ETF assets are passive strategies, it’s easy to understand why.

Active ETFs are underserved in the small- and mid-cap space

(Fig. 5) Small- and mid-cap products by active and passive investment styles

Bar chart contrasting the larger total of active and passive mutual funds with that of ETFs in the small- and mid-cap space.

As of December 31, 2024.
Source: ETF Action. Analysis by T. Rowe Price.

The T. Rowe Price approach to small- and mid-cap investing

When Thomas Rowe Price, Jr., launched his first small‑cap fund in 1960, it was among the first small‑cap funds in the market.7 Small‑ and mid‑cap investing is core to the T. Rowe Price DNA, and our investment success has led the firm to become the largest active manager of U.S. small‑ and mid-cap equities. (See “Experience and strength in the small‑ and mid‑cap market.”) The strategies developed over the many decades spent actively managing mutual funds apply directly to actively managing ETFs. All of the firm’s experience, resources, analysis, and expertise can be leveraged in the ETF space.

Experience and strength in the small- and mid-cap market

(Fig. 6) Active U.S. mid-/SMID-cap and U.S. small- and mid-cap managers

Active U.S. Mid-/SMID-Cap
Active U.S. Mid-/SMID-Cap Managers
Firm AUM (USD M)
1. T. Rowe Price 95,853
2. Fidelity Investments 68,889
3. J.P. Morgan Investment Management Inc. 46,757
4. Vanguard 43,816
5. MFS Investment Management 43,445
Active U.S. Small/Micro-Cap
Active U.S. Small/Micro-Cap Managers
Firm AUM (USD M)
1. T. Rowe Price 75,100
2. Dimensional Fund Advisors LP 62,437
3. American Century Investments 31,224
4. Fuller & Thaler Asset Management, Inc. 25,925
5. Kayne Anderson Rudnick Investment Management, LLC 24,703

As of December 31, 2024.
Source: eVestment Alliance, LLC.

T. Rowe Price ETFs: An active approach to portfolio building blocks

TMSL favors stocks that appear inexpensively valued relative to their respective industries and equity universes, with substantial free cash flow and a high return on capital with attractive relative valuation, improving earnings and cash flow, high return on capital, attractive operating margins, and sound balance sheet and financial management. The portfolio typically invests in between 240 and 270 equities in which our managers have the highest level of confidence. These securities fall within the core-, growth-, and value‑oriented spaces. While the macro environment should present opportunities in 2025, process and philosophy is driven by fundamental stock selection. The portfolio employs a bottom-up approach, where the managers select stocks they feel have potential to offer the most compelling upside.

Seeking new opportunities

Investors who have already considered the benefits of active management in small- and mid-cap sectors and have already invested in active funds now have new opportunities to consider in actively managed ETFs. Active ETFs, as with all actively managed funds, provide investors with the opportunity to benefit from professionals with the expertise and resources to make the best decisions based on the information on hand in these sectors.

Call 1-800-225-5132 to request a prospectus or summary prospectus; each includes investment objectives, risks, fees, expenses, and other information you should read and consider carefully before investing.

1FactSet (see Additional Disclosures), as of December 31, 2024.
2ETF Action, as of January 22, 2025.
3FactSet (see Additional Disclosures). Analysis by T. Rowe Price.
4Wilshire 5000 Index.
5Furey Research Partners, December 31, 1998; September 30, 2024.
6Morningstar (see Additional Disclosures), as of March 12, 2025.
7Morningstar (see Additional Disclosures). Analysis by T. Rowe Price.

Additional Disclosures

eVestment Alliance, LLC.

Financial data and analytics provider FactSet. Copyright 2025 FactSet. All Rights Reserved. T. Rowe Price calculations using data from FactSet Research Systems Inc. All rights reserved.

©2025 Morningstar, Inc. All rights reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete, or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

London Stock Exchange Group plc and its group undertakings (collectively, the “LSE Group”). © LSE Group 2025. All rights in the FTSE Russell indexes or data vest in the relevant LSE Group company which owns the index or the data. Neither LSE Group nor its licensors accept any liability for any errors or omissions in the indexes or data and no party may rely on any indexes or data contained in this communication. No further distribution of data from the LSE Group is permitted without the relevant LSE Group company’s express written consent. The LSE Group does not promote, sponsor or endorse the content of this communication.

CFA® and Chartered Financial Analyst® are registered trademarks owned by CFA Institute.

Important Information

This material is provided for informational purposes only and is not intended to be investment advice or a recommendation to take any particular investment action.

The views contained herein are those of the authors as of March 2025 and are subject to change without notice; these views may differ from those of other T. Rowe Price associates.

ETFs are bought and sold at market prices, not NAV. Investors generally incur the cost of the spread between the prices at which shares are bought and sold. Buying and selling shares may result in brokerage commissions which will reduce returns.

Information contained herein is based upon sources we consider to be reliable; we do not, however, guarantee its accuracy.

This information is not intended to reflect a current or past recommendation concerning investments, investment strategies, or account types, advice of any kind, or a solicitation of an offer to buy or sell any securities or investment services. The opinions and commentary provided do not take into account the investment objectives or financial situation of any particular investor or class of investor. Please consider your own circumstances before making an investment decision.

Information contained herein is based upon sources we consider to be reliable; we do not, however, guarantee its accuracy.

Past performance is not a guarantee or a reliable indicator of future results. All investments are subject to market risk, including the possible loss of principal. Investments in securities issued by small and mid-cap companies are likely to be more volatile than investments in securities issued by larger companies. All charts and tables are shown for illustrative purposes only.

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