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Should You Avoid a Small ETF?

Every successful ETF started small. So why do investors avoid them?

Nicholas Phillips
By Nicholas Phillips · June 17, 2026
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Small vs Large AUM ETF

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I'm Nicholas Phillips, President of ETF Capital Markets Advisors LLC, with 27 years of experience in ETF trading and capital markets. I provide fractional capital markets support to ETF issuers and asset managers, helping them navigate launches, liquidity, ETF market structure, market maker relationships, and sales and execution support. Through my contributions to ETF Central, I aim to provide practical insights for investors and issuers navigating the ETF landscape.

In this latest piece, I challenge one of the most common assumptions in ETF investing: that bigger is always better. As the ETF landscape continues to evolve, investors may want to look beyond assets under management when evaluating a fund.

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Looking Beyond AUM

Why assets under management may not be the most important factor when evaluating today's ETF strategies.

One of the most common mistakes investors make when evaluating ETFs is assuming that bigger automatically means better.  The logic seems straightforward. If an ETF has limited assets under management (AUM), a short track record, or relatively low trading volume, many investors assume it must be riskier or less attractive than a larger, more established fund.

While there is some truth to that thinking, it may also cause investors to overlook compelling opportunities.

In today's ETF market, AUM is important, but it may not be the most important factor.

The ETF Industry Has Changed

Historically, most ETFs were relatively simple products.

Investors typically chose among broad index funds tracking the S&P 500, international markets, sectors, or countries. In that environment, asset size often served as a useful proxy for quality, stability, and investor acceptance.

Today's ETF market looks very different.

The fastest-growing segments of the industry are increasingly active. Many modern ETFs utilize options, futures, swaps, and active portfolio management techniques to deliver outcomes that extend well beyond simple market exposure.

Investors now have access to strategies focused on:

  • Option income
  • Buy-write investing
  • Defined outcome strategies
  • Managed futures
  • Volatility management
  • Risk-managed equity exposure
  • Alternative sources of return

In many cases, investors are evaluating solutions rather than simply evaluating market exposure.

As a result, the framework used to evaluate ETFs may need to evolve as well.

The AUM Shortcut

Many investors use AUM as a shortcut for quality.

A larger asset base often suggests investor interest, operational scale, and a lower likelihood of closure. Those are all legitimate considerations.

However, AUM does not necessarily tell investors whether a strategy is good.

It does not tell investors whether the portfolio manager is talented, whether the investment process is differentiated, or whether the ETF solves a meaningful problem within a portfolio.

In many cases, investors are measuring popularity rather than investment merit.

Not Every Great ETF Starts Big

Many of today's most successful ETFs began as relatively small products.

Investors were not attracted because those funds had decades of performance history or billions of dollars in assets.

They were attracted because the investment thesis was compelling.

The strategy came first. The assets followed.

That remains true today.

Some issuers launch products with substantial seed capital or convert existing mutual funds into ETFs, allowing them to immediately satisfy certain asset and track-record screens. These approaches can benefit investors and are entirely legitimate.

However, they also demonstrate that AUM alone is not always a measure of investor demand or strategy quality.

Every successful ETF was once a new ETF.

The challenge for investors is determining which new ETFs deserve a closer look before everyone else discovers them.

The Catch-22 Facing New ETFs

Many platforms require meaningful assets and multi-year track records before approving a fund for broader distribution.

Those standards serve important purposes. They help manage operational risk, support due diligence efforts, and reduce the likelihood of recommending products that may ultimately close.

However, they can also create a challenge for innovative ETF managers.

How does a fund build a three-year track record if many investors and advisors cannot access it until it already has one?

How does a fund accumulate significant assets if it cannot gain visibility on the platforms where many advisors conduct their research and implementation?

This is not an argument for eliminating standards.

Rather, it raises an important question:

In an era increasingly defined by active management and outcome-oriented investing, should ETF viability be measured by more than just assets and age?

Understanding the Real Risk of ETF Closure

One reason investors gravitate toward larger ETFs is the perception that smaller funds are more likely to close.

While that is generally true, investors may overestimate the actual risk associated with a fund closure.

In most cases, an ETF closure is not a catastrophic event. Shareholders do not simply lose their investment because a fund shuts down.

Typically, investors have the opportunity to sell their shares after a closure announcement is made. Alternatively, if they continue to hold the ETF through liquidation, the fund's underlying holdings are sold and shareholders receive cash proceeds based on the net asset value (NAV) of the portfolio.

The primary drawbacks are often tax-related rather than investment-related.

Investors holding shares in taxable accounts may realize capital gains sooner than anticipated, potentially creating an unexpected tax event. Investors may also need to identify a replacement investment and re-establish their desired portfolio exposure.

These are legitimate considerations, but they are very different from a permanent loss of capital.

As a result, investors may benefit from viewing ETF closure risk as an inconvenience risk rather than a catastrophic investment risk. While closure should certainly be considered when evaluating a smaller ETF, it should not automatically disqualify an otherwise compelling investment strategy.

What Investors Should Evaluate Instead

When evaluating a newer ETF, investors may benefit from looking beyond AUM alone.

Does the Strategy Solve a Real Problem?

The most important question may be the simplest one.

What problem is the ETF trying to solve?

Is it helping investors generate income?

Manage downside risk?

Reduce volatility?

Improve diversification?

Navigate uncertain markets?

Many of the most successful active ETFs have gained traction because they addressed a genuine investor need.

Is the Portfolio Manager Experienced?

For active ETFs, the portfolio manager may matter more than the AUM.

Investors should understand who is making investment decisions, how long they have been managing assets, and whether they have experience executing the strategy across different market environments.

Is the Strategy Differentiated?

The ETF market has become increasingly competitive.

Investors should ask whether a strategy offers something unique or whether it simply replicates exposures that are already widely available.

Is the ETF Ecosystem Strong?

This is one area that many investors overlook.

An ETF's liquidity is influenced not only by its assets, but also by the quality of the ecosystem supporting it.

Lead market makers, authorized participants, liquidity providers, and capital markets teams all play important roles in helping ETFs trade efficiently.

A newer ETF supported by experienced market participants may offer better liquidity and execution quality than many investors realize.

The Bottom Line

The ETF industry is no longer simply about providing exposure to markets.

Increasingly, ETFs are providing solutions.

Income solutions.

Risk-management solutions.

Volatility-management solutions.

Portfolio-construction solutions.

In that environment, investors may benefit from spending less time asking, "How large is the ETF?" and more time asking, "Does this strategy solve a problem in my portfolio?"

AUM and track record remain important considerations, but they should not be the only considerations.

After all, every successful ETF was once a new ETF—and many of tomorrow's success stories are still small today.

Disclaimer

Please note this article is for information purposes only and does not in any way constitute investment advice. It is essential that you seek advice from a registered financial professional prior to making any investment decision.

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