MarketsJul 3, 2026
Wall Street's Leverage Machine Is Running Hot Again
Market Fragility
Rhea Lobo
Discover
US margin debt jumped 54% year-over-year to a record $1.4T in May, while leveraged ETF assets nearly doubled to more than $200B between late March and early June.
The surge is touching every corner of the financial system, from retail brokerage accounts to hedge fund balance sheets to money market funds most investors think of as safe.
Leveraged ETFs promise 2x or 3x the daily return of a stock or index, and demand has exploded alongside the AI-driven rally in semiconductors.
Funds tied to Micron Technology, Intel, Dell Technologies, and Marvell Technology have given investors triple digit returns in the first half of 2026.
The most recent entrant is SpaceX, where leveraged ETF demand surged following its blockbuster IPO.
Nowhere is this more visible than in South Korea. The CSOP SK Hynix leveraged ETF launched in Hong Kong nine months ago and has since grown to $13B, making it the largest single-stock leveraged ETF in the world.
On volatile days, the fund and its smaller peers can account for two-thirds of all trading in SK Hynix shares. Nomura estimates leveraged ETFs now generate roughly $9B of rebalancing demand for every 1% market move.
Barclays estimates that rebalancing flows from US leveraged ETFs have recently climbed to several times their long-term average.
"I am genuinely worried we have so much money going into the complex of leveraged single-stock products because the more money that goes in there, the more this procyclical trading effect happens."
Dave Nadig, ETF.com.
Banks sit at the center of this web. They supply the leverage ETFs need through total return swaps, and their equity repo positions have grown in near-lockstep with leveraged ETF assets.
Banks' total exposure to hedge funds has risen to roughly $4.5T, up from $2T a few years ago. Those hedge funds repo their Treasuries back to dealers, who in turn rely on money market funds to supply cash, meaning MMF investors are indirectly funding the same risk-taking they thought they were avoiding.
The machinery is showing strain. Banks providing swaps behind the SK Hynix ETF are hitting funding constraints and charging clients more.
The annualized cost of cliquets, derivatives used to hedge against sharp share-price collapses, has risen from roughly 3% in March to over 10%.
Charles Schwab recently tightened margin requirements and began issuing margin calls to clients who exceeded new thresholds.
Korea's top financial regulator said he regretted approving copycat leveraged ETFs, noting that roughly 92% of holders are retail investors. The system isn't failing yet, but the cost of keeping it running is climbing fast.
