Uber said it had 103 million consumers a month in the third quarter, up 26 percent from a year earlier. It provided 1.7 billion rides and food deliveries, up 31 percent from the same period. Growth was affected by the heavy discounts that Uber continues to provide for shared rides, Mr. Khosrowshahi said.

The company provided more details on each of its businesses on Monday, breaking out its revenues from rides, food delivery, bike and scooter rentals, freight shipment and autonomous vehicles for the first time.

Previously, Uber reported the figures from rides and food delivery as a lump sum. The change is “a step in the right direction from a transparency perspective,” Mr. Ives said.

Investor skepticism about unprofitable companies could work in Uber’s favor, Mr. Khosrowshahi argued, especially as its food delivery competitors, many of which are still private companies, continue to burn cash by subsidizing deliveries.

“Many of the start-ups in the food delivery category have been trying to use cheap capital to buy their way to growth, but we have seen that capital is getting more expensive and can run dry,” Mr. Khosrowshahi said during an earnings call. “Platform leadership is both far cheaper and more permanent.”

Nelson Chai, Uber’s chief financial officer, said the company was willing to leave markets where food delivery competition had grown unsustainable. In September, Uber pulled out of delivering food in South Korea.

The pressure on Uber’s stock is not likely to end soon. On Wednesday, the so-called lockup period on insider sales of its shares will expire. That means Uber’s employees and early investors will be able to sell their company stock. If many employees and insiders rush to sell at once, that could cause Uber’s share price to decline further.