Leveraged ETFs are having a moment. The category has swelled to roughly $200 billion in assets, leveraged and inverse funds made up nearly a third of all U.S. ETF launches in the first half of this year, and average daily trading volumes in these products have ballooned to around $45 billion.
We just got a vivid reminder of where this excess can lead. South Korea's market spent the last few weeks in a full-blown leverage unwind. The KOSPI, now dominated by AI chip giants Samsung and SK Hynix (which together make up more than half the index), fell like a rock through July, triggering a record run of circuit-breaker halts, while the single-stock leveraged ETFs tracking those names amplified every swing. Retail traders who had piled in borrowed money ended up liquidating everything, selling a record number of shares even into the rebound. Korean regulators have already halted new leveraged ETF listings and are weighing emergency powers to cut leverage ratios mid-crisis.
That's an extreme case, but the underlying lesson travels. Here's one of the strangest facts in modern markets: there are exchange-traded products designed to give you three times the daily return of a single stock, and some of them have lost the majority of their value in years when the underlying stock more than doubled. It sounds impossible. It's actually just math and understanding that arithmetic is essential before anyone goes near these products. The Korean traders who sold everything at the bottom weren't necessarily wrong about the stocks. They were just wrong about the instrument they were using.
What These Funds Actually Promise
Leveraged single-stock ETFs offer investors two or three times a stock's daily return. That word, daily, is doing all the work, and it's right there in the prospectus alongside grim warnings not to hold these funds long-term.
If the underlying stock rises 3% on Monday, a 3x fund rises 9%. If the stock falls 5% on Tuesday, the fund falls 15%. The fund delivers on this promise faithfully, day after day. What it does not deliver is three times the stock's return over a month, a quarter, or a year. In volatile names, the long-term result can even be worse than 0x. The stock goes up, and the leveraged fund still loses money.
The Mechanics
Why does this happen? The fund must offer 3x the daily return to whoever buys it, whenever they buy it. That forces a daily rebalance, and the rebalance is where the trouble starts.
Say Monday morning the ETF trades at $100 and the underlying stock trades at $100. Each ETF share gives you exposure to three shares of stock. The simplest way to picture it: $100 of investor money plus $200 of borrowing, buying $300 worth (three shares) of stock.
- Monday: The stock rises 10% to $110. The ETF's three shares are now worth $330, or $130 of equity for investors on top of the $200 of borrowing, so the ETF rises 30% to $130.
- Monday night: To keep offering 3x exposure to Tuesday's buyers, the fund must now hold three times $130 of stock, or $390. That's about 3.55 shares instead of 3 ($130 divided by the $110 share price is 1.1818 times three is 3.5454). So, the fund borrows another $60 and buys more shares after they've gone up.
- Tuesday: Now suppose the stock falls 9%, closing at $100.10. The fund's 3.55 shares, worth $390 the night before, lose 9% of their value and are now worth $354.90. Subtract the $260 of borrowing and investors are left with $94.90. The ETF has fallen 27%.
Look at the two-day scoreboard. The stock is up 0.1% ($100 to $110 to $100.10). The 3x ETF is down 5.1% ($100 to $130 to $94.90). The fund gave you exactly three times Monday's return and exactly three times Tuesday's return, and roughly negative 50 times the two-day return. (And then, to reset for Wednesday, the fund sells some stock to get back to 3x its now-smaller $94.90 equity base. Buy high, sell low, repeat.)
Volatility Drag
There are two useful ways to build intuition here:
- The asymmetry of percentage moves. When the stock rises X% then falls Y%, the ETF rises 3X% and then falls 3Y% of a bigger number. Losses after gains hurt more and gains after losses help less.
- The forced trading pattern. The fund must buy exposure after every up day and sell exposure after every down day. Buying high and selling low, mechanically, every single day, is a drag on returns.
Here's the key point: both of these only bite when the stock is volatile. If a stock marches steadily upward, 3x daily compounding actually works out to roughly 3x (or better) over time. But if a stock swings 6 to 8% in a typical day, as the high-flying names these funds attach to tend to do, the daily resets compound into something brutal.
You can construct the math yourself. If a stock alternates between +u% and -d% days, its two-day return is (1 + u)(1 − d), which works out to 1 + u − d − ud. The stock gains ground only if (u − d) exceeds u × d. So a stock alternating between +8% and -7% days climbs steadily over time, because 1% beats 0.56%. But triple those daily moves to +24% and -21% (exactly what a 3x fund delivers) and the same path declines steadily, because now the 3% net gain is overwhelmed by the 5.04% interaction term. Mostly positive daily returns, tripled, can produce a negative long-term return.
Add management fees, borrowing costs, and trading friction on top, and the real-world results are worse than the pure arithmetic. In one extreme real-world case, mechanically tripling a volatile stock's mostly positive daily returns turned a triple-digit annual gain into a double-digit loss before fees. The actual 3x product did far worse than that.
It Can Be Worse
The math above assumes the fund survives long enough for you to experience the drag. Sometimes it doesn't.
On July 14th, a false bankruptcy rumor sent Lucid Group down more than 50% intraday. The 2x leveraged ETF tracking it, GraniteShares' LCDL, saw its swap counterparty exercise its contractual right to terminate the position under the fund's governing documents (i.e. the fund lost all of it’s equity, so the bank/counterparty terminated the agreement). The fund's net asset value went negative, trading was suspended, and delisting proceedings began. The next day, Lucid called the report "completely false" and the stock recovered much of its losses. None of that mattered to LCDL holders. The fund was already gone, and they didn't get to participate in the recovery.
2x leverage means a 50%+ drop and it’s over. 3x leverage only needs a 33%+ daily drawdown... This is the final layer of risk. Volatility drag erodes returns over time. A single-day collapse can erase the entire position in the blink of an eye.
Traders Seem to Get It
To their credit, U.S. investors appear to be using these products as intended: as trading vehicles, not investments. Turnover data on popular leveraged single-stock funds suggests the average position flips in a matter of days, compared to holding periods measured in months or years for broad index ETFs like Vanguard's S&P 500 fund. These are tools for expressing a short-term view, and most of the money flowing through them behaves that way.
The danger is the investor whose logic runs: "I like this stock, so I'd like 3x of this stock even more. I'll buy the 3x fund and hold it." That's the trade that gets your face ripped off, even when you're right about the stock. And as Korea just demonstrated, when enough investors make that mistake at the same time, the forced daily rebalancing of the funds themselves can pour fuel on the underlying stock's swings. Regulators there are now openly debating whether the products amplified the very volatility that wiped out their users.
Bottom Line
- Read "daily" as a warning label. The leverage resets every day, which means multi-day returns are path-dependent and unpredictable.
- Volatility is the enemy, not direction. Even a stock that trends up can destroy a leveraged holder if it whipsaws along the way.
- These are trading instruments. If you use them at all, the holding period should be measured in days, which is how most of the market already treats them.
- The drag is structural. Fees and borrowing costs make it worse, but the decay would exist even in a frictionless world.
- The fund can die before you do. A single-day move against you can wipe out the position even if the stock recovers the next day.
Leveraged single-stock ETFs do exactly what they say on the label. The trouble is that many investors never read the label carefully enough to notice what it actually says.
Disclosures
This material has been prepared for informational purposes only and should not be construed as a solicitation to effect, or attempt to effect, either transactions in securities or the rendering of personalized investment advice. This material is not intended to provide, and should not be relied on for tax, legal, investment, accounting, or other financial advice. You should consult your own tax, legal, financial, and accounting advisors before engaging in any transaction. Asset allocation and diversification do not guarantee a profit or protect against a loss. All references to potential future developments or outcomes are strictly the views and opinions of Richard W. Paul & Associates and in no way promise, guarantee, or seek to predict with any certainty what may or may not occur in various economies and investment markets. Past performance is not necessarily indicative of future performance.