Personal Finance
Top reasons why exchange-traded fund growth has ballooned
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Exchange-traded funds have steadily gained popularity among investors in recent years — a trend experts say is largely due to advantages like lower tax bills and fees relative to mutual funds.
The first ETF debuted in 1993. Since then, ETFs have captured about $9.7 trillion, according to Morningstar data through August 2024.
While mutual funds hold more investor funds, at $20.3 trillion, ETFs are gaining ground. ETF market share relative to mutual fund assets has more than doubled over the past decade, to about 32% from 14%, per Morningstar data.
“The simple fact is, the structure of an ETF is a superior fund structure to a mutual fund, especially for taxable accounts,” said Michael McClary, chief investment officer at Valmark Financial Group, who uses ETFs to build financial portfolios for clients.
Here are four reasons why McClary and other experts say ETFs took off.
1. They have ‘tax magic’
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ETFs resemble mutual funds in many ways. They’re both baskets of stocks and bonds overseen by professional money managers.
But there are a few distinctions.
At a high level, ETFs trade on a stock exchange, like the stock of a publicly traded company. Investors generally buy mutual funds directly from an investment company.
On a more micro level, many ETF investors can sidestep the fund-level capital gains taxes incurred by many investors who own mutual fund shares, experts said.
Investors generally owe capital-gains tax to the IRS on investment profits, typically from the sale of investment funds or other financial assets like individual stock and real estate.
However, mutual fund managers can also generate capital-gains taxes within a fund itself when they buy and sell securities. Those taxes then get passed along to all the fund shareholders.
In other words, these investors get a tax bill even if they personally didn’t sell their holdings.
The structure of an ETF, however, allows most managers to trade a fund’s underlying stocks and bonds without creating a taxable event for investors, experts said.
This is “tax magic that’s unrivaled by mutual funds,” Bryan Armour, director of passive strategies research for North America and editor of the ETFInvestor newsletter at Morningstar, wrote earlier this year.
In 2023, about 4% of ETFs distributed capital-gains taxes to investors relative to more than 60% of stock mutual funds, Armour said in an interview.
But the advantage depends on a fund’s investment strategy and asset class. Investors who hold actively managed mutual funds that trade often are more susceptible to tax loss, whereas those with market-cap-weighted index funds and bond funds “don’t benefit that much from the tax advantage of ETFs,” Armour wrote.
Additionally, “the taxable argument doesn’t matter in a retirement account,” McClary said.
That’s because workplace retirement plans like a 401(k) plan and individual retirement accounts are tax-advantaged. Investors don’t owe capital-gains taxes related to trading as they would in a taxable brokerage account.
“The 401(k) world is a place where mutual funds can still make sense,” McClary said.
2. Costs are low
The first ETF was an index fund: the SPDR S&P 500 ETF Trust (SPY).
Index funds, also known as passively managed funds, track a market index like the S&P 500.
They tend to be less expensive than their actively managed counterparts, which aim to pick winning stocks to outperform a benchmark.
Investors have equated ETFs with index funds since their inception, even though there are also index mutual funds, experts said. The first actively managed ETF wasn’t available until 2008.
ETFs have therefore benefited from investors’ long-term gravitation toward index funds, and away from active funds, as they seek lower costs, experts said.
The average ETF costs half as much as the average mutual fund, at 0.50% versus 1.01%, respectively, according to Armour.
ETFs accounted for 80% of net money into index stock funds in the first half of 2024, Morningstar found.
“Low costs and greater tax efficiency are an easy win for investors, so I think that’s the simple answer that’s been so effective for ETFs,” Armour said.
That said, investors shouldn’t assume ETFs are always the lowest-cost option.
“You may be able to find an index mutual fund with lower costs than a comparable ETF,” according to a March 2023 report by Michael Iachini, head of manager research at Charles Schwab.
3. Financial advice fee model changes
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Financial advisors have also undergone a shift that’s benefited ETFs, said Morningstar’s Armour.
Retail brokerage firms historically earned money from commissions on the sale of funds and other investments.
However, many firms have moved toward a so-called fee-based model, whereby clients incur an annual fee — say, 1% — based on the value of the holdings in their account. A virtue of this model, according to advocates, is that it doesn’t influence an advisor’s investment recommendation as a commission might.
Low costs and greater tax efficiency are an easy win for investors, so I think that’s the simple answer that’s been so effective for ETFs.
Bryan Armour
director of passive strategies research for North America at Morningstar
The shift is “one of the most important trends in the retail brokerage industry over the past decade,” according to McKinsey.
ETFs work well for fee-based advisors because they’re less likely than mutual funds to carry sales-related costs like sales loads and 12b-1 fees, Armour said. The latter is an annual fee that mutual funds charge investors to cover marketing, distribution and other services.
While brokerage firms may charge a commission to buy ETFs, many large brokerages have ditched those fees.
“There was a whole generation of advisors who only used mutual funds,” McClary said. “Now, it’s hard to find a quality [advisor] that doesn’t use ETFs to some capacity.”
4. SEC rule made ETF launches easier
The Securities and Exchange Commission issued a rule in 2019 that made it easier for asset managers to launch ETFs and streamlined portfolio management for active managers, Armour said.
As a result, financial firms have been debuting more ETFs than mutual funds, increasing the number of funds available for investors.
In 2023, for example, fund companies issued 578 new ETFs, relative to 182 mutual funds, according to Morningstar.
Potential drawbacks of ETFs
Stock traders on the floor of the New York Stock Exchange.
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That said, ETFs have drawbacks while some of their stated benefits may be oversold.
For example, while most ETFs disclose their holdings every day (unlike mutual funds), such transparency “adds little value” for investors, who have little need to check underlying securities frequently, Armour wrote.
Additionally, ETFs trade throughout the day like a stock, while investors’ orders for mutual funds are only priced once a day, when the market closes.
But the ability to trade ETFs like a stock is “not much of an advantage for most investors,” Armour said. That’s because frequent buying and selling is generally a “losing proposition” for the average investor, he said.
Certain ETFs may also be tough to trade, a situation that could add costs for investors due to wide differences between the asking price and the bidding price, experts said. By contrast, mutual funds always trade without such “bid/ask spreads,” Iachini said.
Unlike mutual funds, ETFs can’t close to new investors, Armour said. If the fund gets too big, it can sometimes be difficult for certain actively managed ETFs to execute their investment strategy, he said.
The Federal Reserve held interest rates steady at the conclusion of its policy meeting on Wednesday.
In what could be Jerome Powell’s last as chair before President Donald Trump’s yet-to-be-confirmed nominee Kevin Warsh takes the helm, central bankers maintained the federal funds rate in a target range of 3.5% to 3.75%.
Inflation has surged since the war with Iran began, leaving policymakers with limited room to act, according to Sean Snaith, the director of the University of Central Florida’s Institute for Economic Forecasting. “We’re in a kind of suspended animation — between Iran and the Fed transition,” Snaith said.
Before the oil shock, inflation was holding above the Fed’s 2% target but not worsening. Now the jump in energy costs could have longer-term inflationary effects, economists say.
For Americans struggling in the face of higher gas prices and overall affordability challenges, the central bank’s decision to keep interest rates unchanged does little to ease budgetary pressures. “The cavalry isn’t coming anytime soon,” Snaith said.
How the Fed decision impacts you
The Fed’s benchmark sets what banks charge each other for overnight lending, but also has a trickle-down effect on many consumer borrowing and savings rates.
Short-term rates are more closely pegged to the prime rate, which is typically 3 percentage points above the federal funds rate. Longer-term rates, such as home loans, are more influenced by inflation and other economic factors.
Credit cards
Most credit cards have a short-term rate, so they track the Fed’s benchmark.
After the Fed cut rates three times in the second half of 2025, the average annual percentage rate has stayed just under 20%, according to Bankrate.
“Without Fed rate cuts, there’s not much reason to expect meaningful declines anytime soon, so carrying a balance will remain very expensive,” said Matt Schulz, chief credit analyst at LendingTree.
Mortgage rates
Fixed mortgage rates, on the other hand, don’t directly track the Fed but typically follow the lead of long-term Treasury rates.
Concerns about how the Iran war will impact the U.S. economy have already pushed the average rate for a 30-year, fixed-rate mortgage up to 6.38% as of Tuesday, from 5.99% at the end of February, according to Mortgage News Daily.
That leaves homeowners with existing low mortgage rates “feeling stuck,” said Michele Raneri, vice president and head of U.S. research and consulting at TransUnion. “Mortgages, more than any other credit type, work on a churn,” she said, referring to how a dip in rates can boost borrowing activity.
Student loans
Federal student loan rates are also fixed and based in part on the 10-year Treasury note, so most borrowers are somewhat shielded from Fed moves and recent economic uncertainty.
Current interest rates on undergraduate federal student loans made through June 30 are 6.39%, according to the U.S. Department of Education. Interest rates for the upcoming school year will be based in part on the May auction of the 10-year note.
Car loans
Auto loan rates are tied to several factors, including the Fed’s benchmark. Because financing costs remain elevated, new car buyers are taking on longer loans to keep their monthly payments manageable, according to the latest data from Edmunds.
Even so, with the rate on a five-year new car loan near 7%, the average monthly payment on a new car rose to $773 in the first quarter of 2026, an all-time high.
“Car buyers are in a tough spot right now because they’re getting squeezed from both ends: high sticker prices and high interest rates, with neither showing any signs of letting up,” said Joseph Yoon, consumer insights analyst at Edmunds.
“Until the rate picture shifts, buyers will keep stretching loan terms to make payments work, which only adds to the total cost of ownership down the road,” Yoon said.
Savings rates
While the Fed has no direct influence on deposit rates, the yields tend to be correlated with changes in the target federal funds rate. So, although rates on certificates of deposit and high-yield savings accounts have fallen from recent highs, they are holding above the annual rate of inflation.
For now, top-yielding online savings accounts and one-year CD rates pay around 4%, according to Bankrate.
“Yields on high-yield savings accounts and certificates of deposit are down from their peaks of a few years ago, but they’re still strong compared to what we’ve seen for most of the past decade,” Schulz said.
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The average tax refund is 11.2% higher this season, compared with about the same period in 2025, according to the latest IRS filing data.
As of April 10, the average refund amount for individual filers was $3,397, up from $3,055 about one year ago, the IRS reported on Friday.
The IRS data reflects about 114 million individual returns received, out of about 164 million expected through Tax Day. Next week’s filing update is expected to include data through the April 15 deadline.
President Donald Trump‘s 2025 legislation, rebranded to the “working families tax cuts,” was a key talking point for Republicans on Tax Day.
With the November midterm elections approaching and Republicans defending slim majorities in Congress, many GOP lawmakers have highlighted Trump’s tax breaks and higher average refunds.
Meanwhile, affordability has been top of mind for many Americans amid rising costs of gas, electricity, food and other living expenses.
For filers who expected a refund this season, nearly one-quarter, or 23%, planned to use the funds to pay down credit card debt, and the same share said they would save the payment, according to the CNBC and SurveyMonkey Quarterly Money Survey, released in April. It polled 3,494 U.S. adults at the end of March.
Who benefited from Trump’s ‘big beautiful bill’
“It’s been a great tax season for the American people,” many of whom have benefited from Trump’s tax breaks, Treasury Secretary Scott Bessent said during a White House press briefing on Wednesday.
More than 53 million filers claimed at least one of Trump’s “signature new tax cuts” — the deductions for tip income, overtime earnings, seniors and auto loan interest — the Department of the Treasury also announced on Wednesday.
Those filers, who claimed the deductions on Schedule 1-A, have seen an average tax cut of over $800, according to the Treasury. Tax cuts can trigger a higher refund or reduce taxes owed, depending on the filer’s situation.
Some filers who itemize tax breaks have also seen benefits from the bigger federal deduction limit for state and local taxes, known as SALT. Trump’s legislation raised that cap to $40,000, up from $10,000, for 2025.
The latest SALT deduction limit change is expected to primarily benefit higher earners, according to a May 2025 analysis of various proposals from the Tax Foundation.
The Treasury has not released data on how many filers have claimed the SALT deduction during the 2026 filing season.
Traders work at the New York Stock Exchange on April 16, 2026.
NYSE
U.S. stocks climbed to record highs on Thursday against a backdrop of war, an oil supply shock and economic forecasts warning of stunted growth amid a protracted conflict.
Many investors may be thinking: Why?
Largely, it’s because the stock market is a barometer of what investors think will happen in the future, rather than an assessment of the present day, according to economists and market analysts.
Investors are essentially shrugging off the Middle East conflict as a blip that will be resolved relatively quickly, they said.
“The stock market isn’t trying to price what’s happening today,” said Joe Seydl, a senior markets economist at J.P. Morgan Private Bank. “The stock market is always trying to price what the world is going to look like six to 12 months from now.”
Why stocks have been ‘resilient’
The S&P 500, a U.S. stock index, fell about 8% in the initial weeks of the Iran war, from the start of the conflict on Feb. 28 to a recent low on March 30.
But stocks have rebounded since then, erasing all losses since the beginning of the war. The S&P 500 closed at an all-time high on Thursday — about 11% higher than its nadir at the end of March. That followed a record close on Wednesday.
“The market has remained very resilient in the face of the war and has rallied strongly on the prospect that it will be resolved,” said Mark Zandi, chief economist at Moody’s.
A ship waits to pass through the Strait of Hormuz following the two-week temporary ceasefire between the US and Iran, which is conditional on the opening of the strait, in Oman on April 8, 2026.
Shady Alassar | Anadolu | Getty Images
And while investors cheered the possibility of a diplomatic off-ramp to the conflict, the temporary ceasefire has appeared tenuous, with the U.S. and Iran each accusing the other of breaking the agreement.
Nations haven’t been able to reach a peace deal ahead of the ceasefire’s end. Vice President JD Vance said U.S. officials left peace talks in Pakistan over the weekend after the Iranian delegation refused to agree to American demands not to develop a nuclear weapon.
The markets ‘have memory’
Ultimately, the stock market is signaling a collective belief that tensions will ratchet down, the war will end in the near term and oil flows through the Strait of Hormuz will normalize, economists said.
That’s largely because investors have been conditioned to believe that President Donald Trump will back off if the economic pain becomes too intense, economists said — the so-called “TACO” trade, shorthand for “Trump always chickens out.”
“Investors strongly believe — and have been conditioned to believe — he’s going to stand down, find a way to pivot, declare victory and move on,” Zandi said.
Trump has pushed back on the notion of backing down, framing his brinkmanship as a savvy negotiating tactic.
Economists pointed to a recent example of this dynamic: in April 2025 during so-called liberation day, when the Trump administration levied a host of tariffs on U.S. trading partners.
Within days — after the stock market had cratered more than 12% — Trump announced a 90-day pause on those tariffs. Stocks then saw one of their biggest daily rallies in history following Trump’s reversal.
Investors remember that Trump often de-escalates geopolitical shocks — which is why they’ve seized on positive headlines that hint at progress in peace talks, for example, Seydl said.
“The markets have memory,” Seydl said.
AI stocks and the ‘tech boom’
Traders celebrating at the New York Stock Exchange on April 15, 2026, as the S&P 500 closed above the 7,000 level for the first time.
NYSE
There are other factors underpinning market resilience during wartime, economists said.
One is the investors’ enthusiasm for artificial intelligence and technology stocks, which account for almost half of the S&P 500’s market capitalization, Zandi said.
“Those stocks run on their own dynamic independent of anything, including the war in Iran,” Zandi said. “I think we would have been down a lot more and it would have been harder for us to recover had it not been for the very, very optimistic perspectives on AI.”
We’re in the middle of a “tech boom” — and investors are likely to remain optimistic until they think the tech cycle has run its course, Seydl said.
More broadly, stock investors are essentially making a bet on the future earnings growth of a company — and the earnings backdrop has been “pretty solid,” Seydl said.
Consumer spending appears to be stable, for example, economists said. And companies are getting a boost to their after-tax earnings from the GOP’s so-called “big beautiful bill,” which, among other things, made it easier to write off investments upfront and therefore reduce their tax liability, Zandi said.
Going forward
Experts said there will be an economic hit from the Iran war, though.
“Despite the recent news of a temporary ceasefire, some damage is already done, and the downside risks remain elevated,” Pierre-Olivier Gourinchas, director of research at the International Monetary Fund, wrote Tuesday.
A protracted conflict risks deep and global economic pain, he wrote.
Even if the conflict is short-lived — as the broad market expects — stocks are unlikely to march much higher until it’s clear the U.S. is on the other side of the war and its economic fallout, Zandi said.
If investors are incorrect, and President Trump doesn’t back down or quickly extricate the U.S. from the war, the stock market may see a “full-blown correction” or worse, Zandi said. A stock market correction is a decline of at least 10% from recent highs.
“Everyone thinks they know what the script is,” Zandi said. “Now they just need to follow the script. If they don’t, the market will have some real problems.”
The uncertainty provides yet another example of why the average investor with a long time horizon should stick to their investment plan and ignore the noise, experts said.
“Trying to time the market is very difficult if not impossible for the average investor,” Seydl said. “It’s better to take a long-term perspective and ride out bouts of volatility.”
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