Business & Markets
IMF says hedge funds’ growth raises market stress risks
The fund’s analysis finds a larger role in Treasurys and other markets, while calling for better exposure data and stress testing.
Executive summary
- The scale: The IMF estimates hedge funds hold about $13 trillion in assets, more than triple the 2013 level, while gross notional exposures are about $40 trillion. Those are different measures: notional exposure is not assets under management or an estimate of losses.[1][2]
- The risk channel: The IMF says leverage, similar positions across funds and investor withdrawals can combine during market stress, forcing asset sales and potentially transmitting pressure to banks that finance the funds.[1][2]
- The policy gap: The IMF calls for better data on leverage, derivatives, financing and investor redemptions, as well as system-wide stress tests. It also says hedge funds can support liquidity and price discovery in calmer markets.[1][3]
Hedge funds’ expanding role in global markets could make bouts of stress harder to contain, the International Monetary Fund said in a new analysis, pointing to leverage, crowded positions and investor withdrawals as risks that can reinforce one another. The IMF also said the funds can support liquidity and price discovery in normal conditions; its warning describes how risks may build under stress, not a forecast of an imminent market disruption.[1][3][2]
The IMF estimates the sector holds about $13 trillion in gross assets, more than triple its 2013 level, and has roughly $40 trillion in gross notional exposures. Notional exposure measures the face value of positions, including on- and off-balance-sheet trades; it is not the amount of investor assets or a measure of potential losses. Reuters reported that hedge funds held about 9% of the U.S. Treasury market in 2025, up from 4% in 2022, citing the IMF analysis.[1][3][2]
The IMF’s chapter draws on data covering more than 25,000 hedge funds and describes an industry in which assets and leverage are concentrated among a relatively small number of managers and strategies. Many funds borrow through repurchase agreements and bank prime brokers or use derivatives to increase exposure. If volatility rises or financing tightens, margin calls and risk limits can push funds to cut positions quickly.[1][3][2]
Those sales can matter beyond the funds themselves. The IMF says crowded trades and correlated redemptions can trigger simultaneous unwinds, weigh on prices and liquidity, and transmit stress to dealer banks that provide financing. The analysis identifies a possible spillover channel; it does not say that a current hedge-fund event is already causing broad market disruption.[1][3]
The fund says supervisors often lack a complete view of funds’ leverage, derivatives, securities financing, prime-broker relationships and redemption terms. It recommends stronger reporting and cross-border information sharing, alongside system-wide stress tests to identify how losses could move among funds, banks and markets.[1][3][2]
The IMF argues that remedies should match the source of risk. Broad market safeguards such as stronger collateral practices may address synchronized deleveraging, while limits tied to a particular firm or exposure may fit concentrated risks. Reuters reported the chapter was released ahead of the full October Global Financial Stability Report, scheduled for Oct. 13.[1][3][2]