The financial markets appear calm on the surface, but powerful undercurrents are surging beneath. In the first half of 2026, an unprecedented expansion of leverage is quietly unfolding within the global financial system—from retail leveraged ETFs to institutional futures and total return swaps, to the extreme stretching of dealer balance sheets, the chain of leverage has extended into every corner.

Goldman Sachs futures trading expert Robert Quinn noted in a recent weekly report that stock financing costs saw an "unprecedented" spike this week, with dealer leverage hitting a historical mid-year peak. The financing rate for September S&P 500 TRF briefly reached the federal funds rate plus 127.5 basis points. The CME S&P 500 Adjusted Interest Rate Total Return Futures (AIT TRF), a measure of U.S. stock financing costs, has climbed to its highest level since late 2024.

Andy Kent of brokerage Kyte stated, "Leverage has become one of the central themes for investors, with margin debt at elevated levels and borrowing continuing to expand across the shadow banking system."

The potential risks of this leverage wave cannot be ignored. Citing market warnings, it was noted that the explosive growth of leveraged trading products, the expansion of retail margin accounts, and the surge in hedge fund deposits at prime brokers are accumulating systemic risks. Should financing spreads render a counterparty unsustainable, the entire leverage chain could abruptly reverse, triggering a cascade of falling asset prices.

Leveraged ETFs and Institutional Positions Resonate

The starting point of this leverage expansion is the fervent pursuit of leveraged and inverse ETFs by retail investors. The assets under management for such products are now nearing $200 billion, corresponding to a net exposure of approximately $400 billion. Concurrently, trading volumes in leveraged ETFs have also seen explosive growth.

Goldman Sachs points out that the capital flows from retail investors into leveraged ETFs have pushed dealers to the limit of their capacity to provide exposure to the hottest targets—including SK Hynix, Samsung, and TSMC. Dealers typically use total return swaps (TRS) to meet this demand. Notably, the strong performance of a few leading stocks in sectors like semiconductors and memory chips has also driven organic growth in the assets under management of related leveraged ETFs, further amplifying the overall exposure.

Institutional demand is equally robust. Goldman Sachs' futures trading desk observed that because the market's financing demand for the information technology sector far exceeds that for small-cap stocks, the implied financing rate spread between S&P 500 and Russell 2000 index futures has risen to a multi-year high, reflecting a significant divergence in leverage demand across different assets.

Asian Demand as a Driving Force, South Korean Market Stands Out

Goldman Sachs' analysis points to Asia—particularly the South Korean market—as another major driver behind the recent surge in financing costs. In a recent report, Goldman described the trajectory of the Korea Composite Stock Price Index (KOSPI) as having "evolved into a massive self-reinforcing feedback loop," underpinned by the continuous accumulation of leveraged capital.

Although South Korean regulators have attempted to tighten controls on total return swaps, these measures have proven largely ineffective in curbing the runaway expansion of market leverage. Demand formed by retail investors through leveraged ETFs, combined with positions established by institutions via TRS, has collectively pushed dealers' financing capacity to its limits.

Andy Kent characterized the current situation as a "perfect storm": the rapid growth of leveraged ETFs, the continued accumulation of long futures positions, the absorption of bank capital by IPO and ADR programs, and the expansion of prime brokerage business. The confluence of these multiple factors is jointly driving an "explosive rise" in U.S. market financing costs.

Risk Hedging Heats Up, Leverage Chain Faces Reversal Pressure

Faced with the dual pressures of high financing costs and tech stock valuation bubbles, some investors have begun seeking hedges. Banks are observing substantial trading flows from clients on both the long and short sides of major macro themes. Raphael Cyna, head of global yield structuring at Bank of America, noted that investors initially placed bets on a "stagflation scenario," where stock markets fall and interest rates rise. Subsequently, some traders shifted to hedging for a recession scenario of "falling stocks and falling rates," treating bonds as a traditional safe-haven asset.

Morgan Stanley strategist Bram Kaplan, meanwhile, advised clients to buy S&P 500 call options linked to rising interest rates to capture trading opportunities arising from stock-bond correlations falling to multi-year lows. Major banks are also continuously introducing new variants of hybrid structured products to meet investors' diversified hedging needs in a complex macro environment.

Goldman Sachs' futures trading desk warns that, using May of this year as a reference, financing costs could rise again as the quarter-end approaches. A deeper risk lies in the fact that with dealer financing spreads already at historically high levels, should a counterparty become unable to bear the financing pressure and liquidity suddenly tighten, the entire leverage chain—extending from retail leveraged ETFs to institutional TRS and dealer balance sheets—would face severe reverse compression. In such an event, risk assets would struggle to remain unscathed.