How ransomware attack on ICBC rattled the Treasury market and shook up a 30-year bond auction

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Vivien Lou Chen is a Markets Reporter for MarketWatch. You can follow her on Twitter @vivienlouchen.

It was a trading day unlike any other for traders in the $25 trillion Treasury market, with a 30-year bond auction seen as having been partially undermined by a cyberattack on the U.S. unit of a Chinese bank.

Traders were grappling on Friday to answer the question of what created the sudden lack of interest at the auction, which went so badly that it also shook up U.S. stock investors. Thursday’s sale was the worst since November 2021, based on the extent to which primary dealers were forced to step in and pick up the slack in demand, one trader said. And it reinforced a recent pattern of weak auctions for the 30-year bond that may not bode well for future sales of that long-dated maturity.

“One dynamic that makes yesterday’s ugly auction results murky was the ICBC cyberattack described across various financial media, which gunked-up anybody who clears UST trades through them, and made it so that many dealers were then likely unable to trade with those clients until resolved, on account of unsettled trades which weren’t able to be matched,” McElligott said.

Powell’s policy-related remarks, which indicated the central bank might take further action to control inflation, “didn’t help things and kind of spooked people again,” said John Farawell, head of municipal trading at New York bond underwriter Roosevelt & Cross.As of Friday afternoon in New York, the Treasury market found stabilization as buyers returned to segments of government debt in a sign that calm was being restored.

 

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