Bond Market Turbulence Lifts 30-Year Yield Most Since March 2020

(Bloomberg) -- US government bonds tumbled Monday, erasing a portion of their biggest weekly advance since August, amid signs investors were momentarily regaining their appetite for risk.

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The historic selloff lifted yields across all maturities by at least 20 basis points during the session, with those on 30-year bonds higher by nearly 23 basis points in late trading — set for the biggest one-day increase since March 2020.

“We are in this environment where a little bit of good news has a disproportional environment on asset prices,” said Ian Pollick, head of fixed income, commodities and currency strategy at CIBC. “We saw some potential rebalancing of the markets today, with the equity market starting to improve, and it had the first impact on displacing bonds.”

Traders’ bets on how much the Federal Reserve will lower interest rates this year fluctuated between three and five quarter-point cuts. Four reductions are now reflected in overnight interest-rate swaps this year, with the first fully priced in for June. A May reduction is seen as a coin toss.

Fear of a global recession triggered by the US administration’s tariffs agenda announced last week — and uncertainty around whether some of the most severe levies are being negotiated — led to sharp swings in the bond market as the week kicked off. While US President Donald Trump touted talks with Japanese officials, the White House denied to CNBC any plans to pause tariffs for 90 days.

Some of the whipsawing in Treasuries is tied to to the volatility in stocks, said Subadra Rajappa, head of US rates strategy at Societe Generale. The S&P 500 was only slightly lower after diving as much as 4.7% and then climbing 3.4%. Likewise, yields on 30-year bonds fell as low as 4.32%, then shot up to 4.62%. They were around 4.58% in late trading.

“It’s perhaps a combination of factors,” Rajappa said. “First, unlike prior crises it is not clear the Fed put is viable this time. Second, it is the concern that Treasuries might not act as a haven asset.”

Volatility in rates also surged, and interest-rate swaps dramatically outperformed Treasuries, indicating a preference for off-balance-sheet alternatives.

There’s also potential for auctions later this week to reveal cracks in demand for US bonds, especially from foreign buyers. The Treasury will sell three- and 10-year notes and 30-year bonds, starting on Tuesday.

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