A week after Treasuries mysteriously rallied in the wake of the Federal Reserve lifting its long-term interest-rate forecast, short sellers in the $16 trillion market have reason to celebrate.

The bond selloff deepened Thursday after data Wednesday on U.S. private-sector jobs bolstered the case for the Fed to keep raising rates into 2019, sending 10-year notes down the most in more than a year. Thirty-year Treasury yields pushed above the 3.25 percent level that fixed-income veteran Jeffrey Gundlach identified as a “game changer.”

“Solid data releases, higher oil prices and a technical backdrop that suggests there are not a lot of obstacles for yields to continue to push higher will have many wondering how far this new push higher can go,” said Rodrigo Catril, a Sydney-based strategist at National Australia Bank Ltd.

With an American economy in good shape and equity prices flirting with record highs, 10-year yields appear to be breaking out of the range of about 2.8 percent to 3.1 percent that’s lasted for months. Next up on the potential-catalyst list is Friday’s payrolls report, which gets even more focus given the emphasis Fed officials are placing on data.

Short sellers were already positioned for more pain in the Treasury market. Speculative net short positions on 10-year notes climbed to a record, the most recent Commodity Futures Trading Commission data showed. An update to those figures comes Friday.

“In hindsight we wish we were even shorter on U.S. rates,” said Raymond Lee, a fund manager at Kapstream Capital Pty in Sydney. “My view was that U.S. yields were going to go up -- maybe to 3.25 percent -- but I didn’t think it would be this quick.”

Ten-year yields reached as high as 3.23 percent on Thursday, handily above the peak in May, and the highest since 2011. It’s also above where most analysts had expected them to end the year, with the median estimate at 3.10 percent in a Bloomberg survey.

Aside from data, there’s another dynamic at work: the Fed’s accelerating reduction of its balance sheet. It’s now letting $50 billion a month of its bond portfolio run off without replacement. Along with an escalation in U.S. borrowing requirements -- the federal deficit hit $898 billion in the 11 months through August -- that’s a lot more supply to digest.

“That gradual withdrawal of liquidity is causing yields to rise,” Bob Baur, chief global economist at Principal Global Investors, said in an interview with Bloomberg Television in Tokyo Thursday. “We look for 10-year Treasury yields to hit 3.5 percent at some point -- later this year, early next year -- and I think that’s going to be a real problem for stock markets.”

Others, including Macquarie Group Ltd.’s Viktor Shvets, say ballooning debt levels will keep a lid on yields. “Yields will have to stay very low, primarily because we’re overleveraged,” Shvets, the bank’s head of Asian strategy, told Bloomberg TV in Hong Kong. “There’s just too much debt in the global economy.”

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