Hedge Funds Fill the Void as Traditional Buyers Retreat
TREE NEWS reports: Hedge funds have become an indispensable force in the US Treasury market. Hedge funds held a record $2 trillion in cash Treasuries by the end of 2025, accounting for 7% of the roughly $28.9 trillion in marketable US government debt—nearly triple their holdings five years ago. Federal Reserve data shows the buying spree continued into the first half of 2026, with net purchases of $60.6 billion in the second quarter alone.
This surge comes as traditional long-term buyers step back. Pension funds, historically the backbone of demand for long-duration Treasuries, are shifting from defined-benefit to defined-contribution plans, while accelerating allocations to higher-yielding private credit. Mercer data shows institutional inflows into private credit vehicles approached $300 billion in 2025. As AdvisorShares founder Noah Hamman notes, “Pension funds and insurers have extremely long investment horizons and focus on liability matching; hedge funds pursue performance, typically aiming to beat benchmarks and high-water marks, with much shorter holding periods.”
The Basis Trade: Thin Margins, Massive Leverage
Hedge funds are not buying Treasuries out of bullish conviction. Their primary motivation is relative-value strategies, most notably the Treasury cash-futures basis trade—buying cash Treasuries while selling corresponding futures to capture tiny price discrepancies. Because spreads are razor-thin, these trades rely on enormous leverage, often 20 times or more according to Agecroft Partners CEO Don Steinbrugge. Funds borrow through repo markets, using Treasuries as collateral to magnify positions to multiples of their own capital.
Stress signals are emerging. Morgan Stanley estimates that leveraged basis trade positions have fallen about 20% from their peak to roughly $1.2 trillion. Yet Fed data confirms hedge funds remain net buyers overall, suggesting the contraction reflects strategic adjustment rather than wholesale selling.
Forced Deleveraging: The Liquidity Trigger
The fragility of high-leverage strategies during market turmoil has precedent. Steinbrugge warns: “As seen in March 2020, when Treasury market liquidity deteriorated sharply, leveraged funds were forced to unwind quickly. This triggers a vicious cycle—margin calls, forced selling, and further market volatility.” Union Bancaire Privée hedge fund specialist Ricky Siao adds that hedge funds “use leverage more aggressively than other investor types, potentially amplifying systemic risk.”
Rising volatility itself can spark a downward spiral: falling prices force funds to post more collateral or liquidate, adding selling pressure that pushes prices lower and forces more funds out.
The Double-Edged Sword of Liquidity Provision
Despite the risks, experts acknowledge hedge funds provide real value. Hedge Fund Research president Ken Heinz notes they trade actively rather than holding to maturity, supplying two-way liquidity in both rising and falling markets and helping dampen rate volatility.
The debate is not whether hedge funds are inherently harmful, but that they are both stabilizers and amplifiers—improving liquidity and correcting mispricing in normal times, while becoming a flashpoint for fragility under stress.
Key Takeaways for Investors
- Monitor basis trade positioning: A sharp unwind could trigger Treasury market volatility, spilling into equities, credit, and crypto.
- Watch repo market stress: Funding pressures are the first sign of forced deleveraging.
- Expect rate volatility: With 10-year yields at 2007 highs and 30-year at 2002 peaks, duration risk remains elevated.
- Diversify beyond Treasuries: Reduced pension demand may mean structurally higher term premiums.
