These products are built on derivatives that can multiply, flip, or flip-and-multiply a reference asset's daily return.
In South Korea, a speculative wave channeled billions of dollars into leveraged ETFs tied to SK Hynix Inc. and Samsung Electronics Co. At first those products stoked an already hot AI-driven rally; later, they worsened the selloff once sentiment flipped. With the Kospi Index dominated by those two stocks, the gauge ended up more volatile than Bitcoin.
It was a stark sign that the rapid growth of these instruments in recent years now lets their problems spill beyond the people who buy them.
After the South Korean episode, an intense wave of deleveraging reduced the amount staked in leveraged ETFs, and even at its height that total was modest relative to global equities. Yet a Bloomberg News analysis found that these products' slice of daily trading volume is far out of proportion to their share of assets, implying more market impact than meets the eye.
Meanwhile, much of the money at stake is tied up in a small set of AI-related stocks. An expanding slice of equity leverage is loaded onto those same AI names, several of which have swung wildly. So the yardstick for influence is not the whole market; it is how many shares of those companies are available to trade, and whether leveraged products tied to them are big enough to move that pool.
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Rocky Fishman, founder of Asym Research, said, "The scenario that worries me most is a sudden event very close to the close of trading, whether at a company or market level, that would force end-of-day rebalancing activity to happen in a very short period of time."
On the surface, the leveraged ETF business appears small. Funds in this corner hold roughly $250 billion in global assets, a tiny sum compared with the $22 trillion held by ETFs around the world. Yet by daily trading volume, the picture is different: leveraged ETF shares change hands constantly, making these products one of the busiest corners of the fund business.
That gap comes down to how investors employ these vehicles. Ordinary ETF money can sit in place for years; leveraged funds are built to magnify the daily moves of whatever index or stock they track.
The Korean episode is a case study in how quickly these products can escalate: demand for AI exposure pulled in enormous flows, new listings followed, and daily rebalancing in the funds fed back into the underlying shares. The Micron-tracking listing points to the same dynamic beyond Seoul.
Wall Street has a long record of popular products that backfired. Quant strategies became so crowded they failed. Mortgage bundles helped trigger a crisis.
Volatility-wager products once became the main source of market turbulence. Now, leveraged ETFs seem poised to join them.
Amy Wu Silverman, RBC Capital Markets' head of derivatives strategy, said, "There are elements of the growth of levered ETFs that remind me of the meme frenzy." She added that even people who avoid these products entirely can still feel their effects through broader market moves.
A relatively tiny slice of leveraged ETF assets has an outsized influence on trading. The bulk of the bets sit in only a few AI-related names. You may never buy a leveraged ETF. That does not mean one cannot move a market you are invested in.
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