Traders are returning to a popular hedge fund strategy that bets on US Treasuries outperforming interest rate swaps. This move comes as swap spreads, the difference between Treasury yields and swap rates, have widened sharply. The trade had fallen out of favor during the recent period of tight spreads.

The strategy's resurgence is directly tied to the soaring swap spreads, which have reached multi-year highs. Wider spreads make the basis trade more attractive, as the potential profit from the convergence of Treasury and swap rates increases. This shift reflects changing market dynamics and monetary policy expectations.

Investors now watch for continued volatility in the US debt market. The trade's popularity could influence Treasury liquidity and swap market dynamics. Market participants will assess whether the spread widening is a temporary move or signals a more enduring shift in fixed-income pricing.