JM Morgan CEO says record margin debt and widespread borrowing could amplify market shocks, though he stops short of predicting a financial crisis
JPMorgan Chase Chief Executive Jamie Dimon has warned that elevated levels of leverage across financial markets are increasing the risk of sudden bouts of volatility, adding to growing concerns that years of rising asset prices and aggressive borrowing have left investors more vulnerable to sharp market reversals.
Speaking in an interview with CNBC aired on Wednesday, Dimon said leverage throughout the financial system has reached unusually high levels, making markets more susceptible to rapid selloffs if investor sentiment shifts unexpectedly.
“Market leverage is pretty high,” Dimon said.
“When you have that, you do have a higher chance that something will disrupt the market in a quick way and people will get rattled over it.”
His assertion follows investors’ debate over whether soaring equity valuations, particularly in artificial intelligence-related stocks, have encouraged excessive risk-taking through borrowed money and leveraged investment products.
Dimon made the remarks after being asked about the rapid growth of leveraged single-stock exchange-traded funds (ETFs), investment products that seek to amplify the daily gains or losses of individual stocks by using derivatives and borrowed exposure.
Such products have attracted significant investor interest during the AI-driven rally as traders sought to magnify returns from high-profile technology companies. However, regulators and market participants have questioned whether these vehicles could exacerbate volatility during market downturns.
Rather than focusing on leveraged ETFs themselves, Dimon said his larger concern was the amount of leverage embedded throughout financial markets.
“Margin debt is the highest it’s ever been,” he said, noting that many forms of leverage are not captured in traditional margin debt statistics.
Margin debt refers to money investors borrow from brokerage firms to purchase securities. While borrowing can magnify gains during rising markets, it also increases losses when asset prices decline, often triggering margin calls that force investors to liquidate positions quickly.
Those forced sales can intensify market declines, particularly when many investors are simultaneously using borrowed funds.
Dimon, however, stopped short of suggesting that current leverage levels pose an immediate threat to financial stability.
“I’m not going to say it’s systemically high or that it’s going to cause a disaster, but it’s high,” he said.
This is considered a measured assessment that elevated leverage increases market vulnerability without necessarily signaling an imminent financial crisis. The issue has attracted renewed attention following a series of sharp market swings linked to highly leveraged investment strategies.
In South Korea, regulators recently tightened oversight of single-stock leveraged ETFs after heightened volatility exposed the risks associated with products that amplify daily movements in individual shares. The concern intensified after the country’s semiconductor-heavy stock market experienced sharp declines.
On Thursday, the benchmark Kospi index closed 5% lower and has now fallen roughly one-third from the record high reached in June, highlighting how quickly investor sentiment toward AI-related assets can reverse.
The selloff was led by major technology companies that have been among the biggest beneficiaries of the global AI investment boom.
Samsung Electronics fell about 6%, while memory chipmaker SK Hynix tumbled nearly 10%, reflecting growing investor caution after several semiconductor companies reported earnings that, although strong, failed to exceed the market’s elevated expectations.
The recent volatility has bolstered concerns that richly valued AI stocks have become increasingly sensitive to even modest disappointments in earnings or guidance.
Separately, the collapse of AI-focused hedge fund Situational Awareness indicated that leverage can accelerate losses once markets move against investors. The hedge fund lost approximately 67% in July after margin calls forced it to unwind much of its public equity portfolio. The firm ultimately sold most of those holdings to Ken Griffin’s Citadel as it sought to meet financing obligations.
The episode revealed that leveraged investment strategies can unravel rapidly when declining asset prices trigger demands from lenders for additional collateral, forcing investors to sell assets into falling markets and potentially amplifying broader market declines.
Dimon’s warning comes at a time when global equity markets remain near record highs, supported by strong corporate earnings, continued investment in artificial intelligence infrastructure and expectations that major central banks will eventually begin easing monetary policy.
Those factors have fueled investor appetite for risk assets, particularly technology stocks, while encouraging greater use of leverage to enhance returns.
Although leverage is a common feature of modern financial markets and can improve liquidity during stable conditions, periods of elevated borrowing have historically increased the severity of market corrections by accelerating forced selling once prices begin to fall.
