Hedge funds pull back on Treasury basis trade as spreads dry up

For years, the Treasury basis trade was the quiet money machine humming in the background of hedge fund portfolios. Buy cash Treasuries, short the corresponding futures contract, pocket the tiny spread between them, and crank up the leverage until that tiny spread becomes a very large pile of money.

Hedge funds have pulled back more than $200 billion in leveraged positions from the Treasury basis trade in recent months, a retreat that some market participants are calling the effective death of the strategy. The culprit is straightforward: the spreads that made the trade profitable have narrowed to the point where even massive leverage can’t squeeze out attractive returns.

How big this trade actually got

As of September 2025, hedge funds’ basis trade positions sat at approximately $830 billion. That represented roughly 35% of their total long Treasury exposure of $2.4 trillion, a figure that had nearly doubled from early 2020 levels.

By mid-2026, the total leverage associated with the trade had swelled to around $1 trillion. The names involved read like a who’s who of the hedge fund world: Millennium Management, Citadel, ExodusPoint, and Capula Investment Management all built significant positions in the strategy.

As of early 2026, hedge funds held around $2 trillion in Treasuries overall, representing a record 7% of the entire Treasury market. That’s more than double the share from five years prior.

Why the trade worked, and why it stopped

The basis trade exploits a simple inefficiency. Treasury futures contracts sometimes trade at a slight premium or discount to the underlying cash bonds. Hedge funds buy the cheaper instrument and sell the more expensive one, capturing the difference when the two converge at expiration.

The catch is that the spread on any single trade is minuscule, often just a few basis points. To make it worthwhile, funds borrow heavily in the repo market, sometimes leveraging positions 50 to 1 or more.

Amplified volatility driven by geopolitical tensions, elevated government debt issuance, and shifting corporate borrowing patterns have all contributed to an environment where the trade’s risk-reward profile looks considerably less appealing.

The systemic question that won’t go away

The strategy’s reliance on high repo-market leverage means that when positions unwind quickly, they can amplify stress across the broader Treasury market. We saw a version of this in March 2020, when a rapid basis trade unwind contributed to the worst Treasury market dislocation in decades, ultimately requiring Federal Reserve intervention.

The current pullback is happening in a more orderly fashion. Funds are reducing positions because profitability has declined, not because they’re being forced out by margin calls or liquidity crises. Evidenced by lower repo funding activity and decreased net short futures positions, their engagement has plateaued or diminished in recent months.