IMF warns hedge funds pose systemic risk to global markets

The International Monetary Fund has issued a stark warning regarding the escalating risks posed by hedge funds to the global financial system. The institution highlights that the sector’s expanding exposure to US Treasury bonds and artificial intelligence equities, combined with increased reliance on borrowing, creates vulnerabilities where sharp sell-offs could spiral into crises affecting banks and the wider economy.

Hedge fund assets surge since 2020

Citing data from Axios, the IMF notes that hedge fund assets have doubled since 2020, approaching $13 trillion. Of this total, approximately $7.7 trillion is financed through debt. By the end of the first quarter of 2026, the gross value of investment positions—including the notional value of derivatives—reached roughly $42.2 trillion.

This figure does not represent potential losses or fully invested capital, as it includes offsetting contracts used for hedging risks. However, it reflects the scale of financial exposure these institutions hold and their interconnectedness with market dynamics.

Leverage amplifies market shocks

Hedge funds utilize financial leverage to execute investments exceeding their own capital. This strategy multiplies losses when prices decline, making funds susceptible to margin calls from lenders. Such demands can force asset sales, which in turn depresses prices and widens the scope of losses.

Valentina Bruno, a finance professor at the American University, cautioned during a discussion of the IMF study that borrowing levels appearing manageable under normal conditions can rapidly become dangerous if markets face sudden shocks.

AI stocks drive portfolio concentration

The IMF reports increasing similarity among hedge fund portfolios, particularly among major institutions, with rising overlap in equity ownership since 2022. Stocks most prevalent in these portfolios exhibit volatility nearly 10 percentage points higher than less concentrated holdings. They also suffer larger declines, approximately 4 percentage points greater, during periods of market turbulence due to the likelihood of simultaneous selling.

Artificial intelligence stocks feature prominently in these investments. Last July, the hedge fund Situational Awareness incurred significant losses after AI shares it held via borrowed money declined. According to Axios, the fund was forced to sell part of its portfolio to meet lender demands before Citadel, owned by billionaire Ken Griffin, purchased a large portion of its shares at discounted prices, helping contain the crisis.

US Treasury bond exposure grows

Hedge fund influence extends into government debt markets. Over the past three years, their exposure to sovereign debt has doubled, with US Treasury bonds accounting for about two-thirds of this increase, according to the IMF. Reuters reported that the hedge fund share of the US Treasury market rose from 4% in 2022 to 9% in 2025, driven by strategies leveraging borrowing to exploit price differences between bonds and futures.

In its Global Financial Stability Report released in April 2026, the IMF warned that rising financing costs could prompt funds to unwind positions quickly, pressuring bond prices and market liquidity. This scenario mirrors the disruptions seen in March 2020, which required Federal Reserve intervention to restore stability.

Risks spread to banks and emerging markets

The fallout from hedge fund losses is not limited to investors. Pressure can transfer to banks providing financing, impacting their ability to offer credit and liquidity, especially when multiple funds face simultaneous losses. The IMF states that consequences extend to emerging markets, where reduced hedge fund activity during turbulent periods places pressure on stock prices and capital flows, particularly in less liquid markets.

These developments signal a shift in the global financial architecture, with an increasing portion of financial activities moving to non-bank institutions subject to different disclosure and risk management requirements. The IMF bases its analysis on data from more than 25,000 hedge funds across 78 countries since 1990 to track sector growth, borrowing levels, and investment overlaps.

The Fund advocates for improved information exchange among regulators, enhanced disclosure of leverage and derivative levels, and closer monitoring of relationships between hedge funds and lending banks. These warnings do not indicate that a new financial crisis is imminent, but highlight structural vulnerabilities within the current system.