Hedge funds accumulated a record 7% of the $30 trillion tradable US Treasury market by the end of 2025, holding $2 trillion in cash Treasurys according to the Office of Financial Research (OFR). This position, nearly triple the amount held five years prior, relies heavily on leveraged basis trades that regulators warn could amplify volatility as spiking bond yields weigh on broader financial markets.
Key Takeaways:
- Record Accumulation: Hedge funds added a net $87 billion in US Treasurys during the first half of 2026.
- High Leverage: Basis trade positions are frequently leveraged 20 times or more, according to Agecroft Partners.
- Yield Milestones: The 10-year Treasury yield crossed 5% on Monday to reach its highest level since 2007, while the 30-year yield reached its highest point since 2002 on Tuesday.
- Position Reduction: Morgan Stanley estimates leveraged basis-trade positions decreased by approximately one-fifth this year down to $1.2 trillion.
Leveraged Basis Trades and Liquidity Risks
As traditional buyers like pension funds reduce long-dated fixed income exposure, domestic hedge funds have filled the gap by purchasing a net $87 billion in Treasurys during the first half of 2026. A primary mechanism driving this demand is the cash-futures basis trade, where funds purchase cash Treasurys and short corresponding futures contracts to profit from minute price discrepancies.
To monetize these narrow yield gaps, funds heavily leverage positions using short-term repurchase agreements (repos). Don Steinbrugge, founder and chief executive of Agecroft Partners, noted that these basis trades are often levered 20 times or more, warning that leveraged funds can be forced to unwind positions rapidly when market liquidity deteriorates. The Federal Reserve highlighted in its May report that hedge fund leverage remained near record levels among major funds, a concern mirrored by the Bank for International Settlements (BIS).
Volatility Concerns Versus Liquidity Provision
Soaring interest rates continue to test bond market resilience. The 10-year yield climbed above 5% on Monday, hitting its highest mark since 2007, while the 30-year yield reached a high not seen since 2002 on Tuesday, adding to broader market pressure where long-term yields remain elevated. Rapid yield spikes trigger margin calls from repo lenders, potentially forcing funds to liquidate bond holdings and exacerbating price declines.
Conversely, Ken Heinz, president of Hedge Fund Research, argued that active trading by hedge funds provides crucial liquidity during both market rallies and sell-offs. While Morgan Stanley estimates that leveraged basis-trade exposure has already contracted by roughly one-fifth this year to $1.2 trillion, ongoing market volatility will determine whether remaining positions can withstand continued rate pressures.
Why It Matters
The concentration of $2 trillion in US Treasurys within highly leveraged hedge fund strategies creates systemic exposure across global finance. If sharp rate movements trigger cascading margin calls, forced selling in the Treasury market could quickly spill over into digital assets and traditional risk markets. Investors must closely monitor repo rate stability and central bank liquidity facilities to gauge whether leverage unwinds threaten broader financial market stability.
