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What Investment Fund Types Are Selling Best? 11 ICI Factbook Trends

By 
Opher Ganel, Ph.D.
Opher Ganel is an accomplished scientist (particle physics), instrument designer, systems engineer, instrument manager, and professional writer with over 30 years of experience in cutting-edge science and technology in collider experiments, sub-orbital projects, and satellite projects.

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What this article covers

Opher Ganel digs into the Investment Company Institute’s 2024 Factbook to show where fund investors are putting their money, from index funds and ETFs reaching near parity with active funds to the $2.6 trillion that flowed out of actively managed domestic equity funds from 2014 to 2023. He compares the data with his own portfolio and explains why falling fees and the decline of load funds matter for every investor.

Key Takeaways

1

Index funds and ETFs now hold nearly half of US fund assets

Index mutual funds and ETFs held 48 percent of fund assets in 2023, up from 19 percent in 2010, 28 percent in 2015 and 40 percent in 2020. Over the same decade, actively managed domestic equity funds lost $2.6 trillion, most of it to domestic equity index ETFs.

2

Mutual funds still hold far more investor money than ETFs

Despite their growing popularity, ETFs account for under a quarter of fund assets, while US mutual funds hold over 75 percent. Financial planner Kevin Estes notes that workplace retirement plans often offer few choices and perhaps no ETFs, so many employees invest in mutual funds out of necessity.

3

Fund fees have fallen sharply, and no-load funds now dominate

Asset-weighted equity mutual fund fees dropped from 0.99 percent in 2000 to 0.42 percent in 2023, and index fund fees fell to 0.05 percent. Funds without sales loads or marketing fees grew from 46 percent of the investment pie to 92 percent, which matters because a five percent load puts a $10,000 investment $500 in the red on day one.

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Knowing which way the herd is going is useful information.

Because, sometimes, following the herd offers safety (and cost advantages). Other times, playing a contrarian game is better (though usually riskier).

That makes the annual Investment Company Institute (ICI) factbook fascinating (if long and data-dense).

It’s even more interesting to compare the 2024 ICI Factbook to the 2023 version to see what’s changing.

What the 2024 ICI Factbook Headlines Say About Fund Investors

The Financial Times highlighted the following tidbits from the ICI report:

  • The number of US households investing in mutual funds is growing (to over half of US households) despite 2023 showing net outflows (translation: more people are investing, but on average, the amounts invested in 2023 were smaller than those that were withdrawn).
  • Individuals and households invest far more in long-term mutual funds (including Exchange Traded Funds, or ETFs) than in money market funds, 83 percent vs. 17 percent, while institutional investors flip that, with about 33 percent in long-term funds and 67 percent in money market funds. As a result, institutional investors own just 5 percent of mutual funds but over half of money market funds.
  • Older investors’ money is mostly in mutual funds, with index funds and ETFs continuing to grow in popularity, reaching nearly half of fund assets. Meanwhile, younger investors put money into crypto.

11 Fund Industry Trends From the ICI Factbook Worth Knowing (and Why)

Here are some things I find more interesting than the above factoids:

1. Where Are Fund Assets Invested? Mostly in the US and Europe

I live and invest in the US, so I found it interesting that nearly half of the $68.9 trillion worldwide assets invested in “regulated open-end funds” (i.e., mutual funds, ETFs, and institutional funds) are invested in the US. If you add in Europe, that reaches 80 percent!

Where’s the rest of the world? More on that below.

2. Mutual Funds vs. ETFs: Which Holds More Investor Money?

I started investing in the 1990s when ETFs were just getting started, so I learned to invest in mutual funds.

Over time, ETFs have gained quite a following, so you may think of me as an investing dinosaur because nearly all my financial investments are still in mutual funds.

However, it seems that I’m far from alone. While ETFs are growing in popularity, they account for under a quarter of fund assets.

Kevin Estes, founder and financial planner of Scaled Finance, LLC comments:

Investment options can shape these statistics. Workplace retirement plans often have few choices – and perhaps no ETFs. Many employees save into their company plan for the match, higher contribution limits, and simplicity. Individual retirement accounts offer more choices. However, they’re often funded by rollovers. Employees might invest in mutual funds out of necessity. Retirees have more flexibility.

3. How Much of the Stock and Bond Markets Do Funds Own?

I once started an experiment to see if I could pick stocks that would outperform the market. Since I had no idea how it would turn out, I limited myself to $25k invested equally across five stocks.

Suffice it to say that the experiment proved to my complete satisfaction that while I can pick funds well, I’m not so great at picking out individual stocks, so I liquidated those stock positions and have stuck with funds ever since.

Given this, I was surprised to learn that US funds own only:

  • A third of US corporate equities
  • A fifth of US and foreign corporate bonds
  • Under a sixth of US treasury and government agency securities
  • A quarter of US municipal bonds
  • A fifth of commercial paper.

Who owns all the rest?

4. How Much Does the Typical Household Hold in Mutual Funds?

Comparing your finances to those of others seems to be a national sport in the US (and elsewhere), and I’m no exception.

That’s why I found it interesting that the median mutual fund stake of US households owning fund shares is $125k and the median number of funds they own is three.

Without getting into specifics, my numbers are higher in both categories. Just three funds?! Seriously?!

5. How Many US Households Have Tax-Advantaged Retirement Savings?

Pensions, a.k.a. defined-benefit retirement plans, have become an endangered financial species in the US, verging on extinction.

While I had an opportunity to get into one when I worked at the University of Maryland in the 1990s and 2000s, it seemed like an underwhelming proposition, so I invested in a 403b plan instead (similar to 401k plans, but for employees of non-profits and government agencies).

I also invested through IRAs.

It turns out that I’m like most Americans in this — three in four US households have such tax-advantaged retirement savings.

6. How Do Fund Investors Allocate Their Assets? (Call Me Aggressive!)

The asset allocation of fund investments in 2023 was 46 percent in equities, 19 percent in bonds, 11 percent mixed/balanced, 15 percent money market, and nine percent “other.”

As I wrote elsewhere, my allocations are far more aggressive. If we assume the “mixed/ balanced” category is split 60/40 between equities and bonds, the world holds 53 percent in equities vs. my 73 percent stock allocation.

My bond allocation, at 22 percent, is slightly lower than the world’s 23 percent, and my paltry five percent cash position is dwarfed by the world’s 15 percent in money markets.

Since I don’t plan to draw money from my portfolio for at least a decade, I’m comfortable with my allocation.

However, most financial advisors would consider my equity allocation overly aggressive for someone over 60.

7. Active vs. Index Funds: How Close Are Index Funds and ETFs to Parity?

I’ve long believed that you can pick winning actively managed funds, which is reflected in the fact that I hold very little in index funds. It seems I’m bucking a trend.

It seems I’m bucking a trend.

  • In 2010, 81 percent of fund assets were invested in active funds, with just 19 percent in index mutual funds and ETFs.
  • Five years later, in 2015, index funds and ETFs grew to 28 percent.
  • Another five years saw their share reach 40 percent in 2020.
  • In 2023, index funds and ETFs reached 48 percent — near parity with active funds!

Jorey Bernstein, Founder, Jorey Bernstein Private Wealth Management says:

While the resurgence of mutual funds may suggest a renewed confidence among investors, it’s essential to look beyond the statistics. The shift towards mutual funds and ETFs reflects a broader trend in asset diversification and risk management.

In my practice, I guide clients based on their individual financial goals and risk tolerance, often blending active and index strategies to align with their unique needs. What surprises me most is how many investors are still unaware of the benefits of low-cost index funds, which can significantly impact long-term returns.

My advice? Stay informed, remain flexible, and always consider the total cost of investment options, as these factors can make a substantial difference in your portfolio’s performance.

8. Where Is Fund Money Flowing? Out of Active Equity Funds

From 2014 to 2023, actively managed domestic equity funds have hemorrhaged assets to the tune of $2.6 trillion!

Most of those funds flowed into domestic equity index ETFs, most of the rest went to domestic index mutual funds, and a small sliver went to active domestic equity ETFs.

As I mentioned above, I’ve been bucking this trend, continuously pouring money into actively managed mutual funds, mostly domestic, but with a good helping of active global and international equity funds.

9. How Much Have Mutual Fund and ETF Fees Fallen?

Fund management fees have always strongly affected shareholder results. The higher the fees the worse off shareholders (that’s you and me).

The funds I invest in have lower than average management fees, for active funds, but higher than index fund fees.

Over the past 23 years, from 2000 to 2023, the simple average of equity mutual fund fees dropped from 1.6 percent to 1.11 percent. Averaging by assets, fees dropped from 0.99 percent to 0.42 percent.

Bond funds started 2000 with lower fees, but dropped less, from 1.13 to 0.83 percent simple average and from 0.76 to 0.37 percent asset-based average. Any way you slice it, lower fees are a big win for us investors.

Index funds, especially, saw fees drop precipitously, from 0.27 percent (equity funds) and 0.21 percent (bond funds) to 0.05 percent (both types, asset-based average).

Interestingly, index ETFs seem to sport higher fees than index mutual funds, at 0.15 percent (equity index ETFs) and 0.11 percent (bond index ETFs).

10. Why Fund Loads and 12b-1 Fees Hurt Investors

Speaking of fees, one especially pernicious fee has always been the so-called “load,” used to pay commissions to advisors who steer investors into a fund.

Talk about a conflict of interest!

An advisor recommends you put your $10k into fund ABC that charges a five percent load. He gets $500 of your money, which means that your investment starts five percent in the red!

He could have sent you to invest in “no-load” fund XYZ instead where every one of your investment dollars would have remained yours, but that wouldn’t have earned him a commission.

Then there’s the so-called “12b-1 fee” that uses your money, as an investor in a fund, to pay for that fund’s marketing efforts that will, at best, do nothing for you, and at worst make the fund too big to remain nimble, making your returns close to the market average you’d get with a no-load, low-fee index fund.

Research proved that fund investment performance was, at best, uncorrelated to sales loads and marketing fees, so investors in load funds fared far worse than those in no-load funds.

That’s why I’ve never bought a single share of any load fund. It also explains why funds that don’t charge load fees and/or marketing-related saw their portion of the investment pie double from 46 percent in 2000 to 92 percent in 2023.

11. What Factors Matter Most When Choosing a Fund?

The ICI report shows high percentages of investors who think the following are very or at least somewhat important.

  • Investment objectives (82 percent)
  • Risks (87 percent)
  • Historical performance (89 percent)
  • Performance vs. an index (85 percent)
  • Have we mentioned fees yet? (87 percent)

When I pick funds to invest in, I look primarily at the fund’s investment objectives, long-term performance vs. its index, long-term risk-adjusted performance, and fees.

By “long term” I don’t mean the most recent quarter or year. I’m talking at least 10 years, and preferably 15 years.

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7 More Surprising Stats About Funds Worldwide From the ICI Factbook

Here are some random stats you might find as interesting as I did:

  • Worldwide, there are nearly 140,000 funds. Of these, 43 percent are in Europe, 29 percent in China and the rest of Asia, just 7 percent in the US (!), and 21 percent elsewhere.
  • In terms of the type of investments, a third invest in stocks, a sixth in bonds, a quarter are mixed/balanced, nearly a quarter are “other,” and just two percent are money market funds.
  • Since 2013, the number of funds increased by 44 percent, but the increase in assets was nearly 90 percent.
  • Since 2013, the portion of assets held by funds increased from 22 percent to 27 percent. Who holds the remaining 73 percent? The ICI reports these are “central banks, sovereign wealth funds, pension plans (both defined benefit and defined contribution), banks, insurance companies, hedge funds and private equity funds, broker-dealers, and households’ direct holdings of stocks and bonds.”
  • In the US, households hold nearly twice as much of their financial assets in funds than in bank accounts (22 vs. 12 percent). In Europe, that ratio flips, and then some – 32 percent in bank accounts vs. just 10 percent in funds. In Japan, that ratio is even more lopsided – 53 percent in banks vs. a measly five percent in funds!
  • In the US, there are over 16,000 funds, of which 54 percent are mutual funds and 21 percent are ETFs, for a ratio of 2.6:1. But when you look at assets, mutual funds hold over 75 percent vs. ETFs’ 24 percent, with the remaining 25 percent of other fund types holding just one percent of assets.
  • Running funds is quite lucrative, at least if your investment results are reasonably good. This incentivizes fund companies to launch new funds and, perhaps as much, to close or merge their losers into better-performing funds. From 2013 to 2023, 7880 new funds were launched, while 6465 went away. Significantly more funds were launched than disappeared in five of these 11 years, five years showed near parity (within 15 percent of each other), and just one year, 2020, saw significantly more funds disappear than new ones launched. Interestingly, in all 11 years, the number of new ETFs significantly exceeded the number of ETFs that went away, possibly because most ETFs are index followers, so they can’t perform poorly unless their fees are exorbitant.

The Bottom Line: What the ICI Factbook Can Teach Fund Investors

You can learn a lot from reports such as ICI’s annual factbook.

In the above, I detail 11 topics I found especially interesting, why I think they’re interesting, and how I manage our investments in those regards. I then list seven other random stats that I found interesting, even though they don’t affect my investments much.

Which facts did you find most intriguing and why?

Frequently Asked Questions

Are ETFs more popular than mutual funds?

ETFs are growing in popularity, but according to the ICI data cited in the article they account for under a quarter of fund assets, while US mutual funds hold over 75 percent. One advisor interviewed points out that workplace retirement plans often offer few choices and perhaps no ETFs, so many savers hold mutual funds out of necessity.

What share of fund assets is invested in index funds and ETFs?

Index funds and ETFs reached 48 percent of fund assets in 2023, near parity with active funds. That share was just 19 percent in 2010, 28 percent in 2015 and 40 percent in 2020.

How much have mutual fund fees dropped?

From 2000 to 2023, the asset-weighted average fee for equity mutual funds fell from 0.99 percent to 0.42 percent, and for bond funds from 0.76 percent to 0.37 percent. Index fund fees dropped to 0.05 percent on an asset-weighted basis, while index ETFs averaged 0.15 percent for equity and 0.11 percent for bonds.

What is a fund load, and why do investors avoid it?

A load is a sales fee used to pay a commission to the advisor who steers an investor into a fund. With a five percent load, $500 of a $10,000 investment goes to the advisor, so the investment starts five percent in the red. Opher Ganel notes that research found fund performance was, at best, uncorrelated to sales loads and marketing fees, and no-load funds grew from 46 percent of the market in 2000 to 92 percent in 2023.

What should you look at when choosing a mutual fund?

Most investors in the ICI survey rated investment objectives, risks, historical performance, performance against an index and fees as important. Opher Ganel focuses on a fund’s objectives, long-term performance versus its index, long-term risk-adjusted performance and fees, measuring long term as at least 10 and preferably 15 years. One advisor interviewed adds that investors should always consider the total cost of their investment options.

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Disclaimer: This article is intended for informational purposes only, and should not be considered financial advice. You should consult a financial professional before making any major financial decisions.

Opher Ganel, Ph.D.

About the author

Opher Ganel, Ph.D.

Contributing Writer, Wealthtender

My career has taken some unexpected turns, from earning a PhD in experimental high-energy physics, to conducting cosmic-ray research in Antarctica, to supporting NASA projects and programs, to running my own consulting business. I also run several other small businesses and help my wife run her Marriage and Family Therapy practice.

Those experiences taught me to question assumptions, think critically, and recognize that real-world decisions of any significance rarely have simple answers that apply to everyone. Today, I bring that perspective to writing about personal finance. Drawing on my analytical background, business experience, and research, I explore financial decisions, challenge conventional wisdom, and help readers understand the tradeoffs that can affect their financial well-being. To complement my own research and experience, I also weave insights from financial professionals into my articles, drawing on their expertise and real-world experience helping clients navigate financial decisions and challenges.

At medium.com/@opher-ganel, you can read more of my articles and subscribe to receive email notifications when new ones come out.

Wealthtender is a trusted, independent financial directory and educational resource governed by our strict Editorial Policy, Integrity Standards, and Terms of Use. While we receive compensation from featured professionals (a natural conflict of interest), we always operate with integrity and transparency to earn your trust. Wealthtender is not a client of these providers. ➡️ Find a Local Advisor | 🎯 Find a Specialist Advisor