While WeWork’s product has proved popular, its expansion has been costly — it had an operating loss of $1.37 billion in the first half of this year — and it is not clear when it might turn a profit.

“We have decided to postpone our I.P.O. to focus on our core business, the fundamentals of which remain strong,” Artie Minson and Sebastian Gunningham, co-chief executives of the We Company, said in a statement on Monday.

They said that WeWork still had “every intention” to become a public company and that it would seek to list its shares on the stock market in the future.

Reflecting investors’ concerns about WeWork’s financial position, the price of the company’s bonds has plunged in recent days. The bonds were trading on Monday at about 85 cents to the dollar, down from more than 102 cents a month ago. The yield on that debt, which moves inversely to its price, has jumped to more than 11 percent, from 7.3 percent a month earlier.

“Right now, the market is telling you the horrific risk being ascribed to this name,” said Vicki Bryan, chief executive of Bond Angle, a bond analysis firm.

Standard & Poor’s cut the company’s credit rating last week to B–, from B, citing “heightened uncertainty around the We Company’s ability to raise capital to support aggressive growth and the pressure this places on liquidity.”

The company said Monday that it would now expand at a slower pace. “While we will continue to sign new lease agreements with our landlord partners, we expect the pace to slow over the next several quarters as we focus on strategic expansion and profitability,” Matt Lawyue, a spokesman for WeWork, said in a statement.