At $31B, Airbnb Now Second Most Valued Company Behind Uber

Airbnb has raised an additional $1 billion, expanding its war chest at a time of increased investor interest in fast-growing businesses.

The company, which disclosed the funding in a securities filing on Thursday, raised the money in a financing round that began last summer and that valued the business at $30 billion. The filing did not name the investors.

Over the years, Airbnb, a short-term lodging rental company founded in 2008, has raised more than $3 billion, and secured a $1 billion line of credit, according to the research firm CB Insights. Airbnb, based in San Francisco, is the No. 2 most valuable private company in the United States behind Uber, the ride-hailing business, according to CB Insights.

CNBC earlier reported that Airbnb had closed the funding round. An Airbnb spokesman declined to comment further on the filing.

The completion of the funding round follows the initial public offering this month of Snap, the maker of the ephemeral messaging application Snapchat, which was also one of the most highly valued private companies before its debut. Snap’s I.P.O. has raised questions about which other private tech companies may go public this year.

Airbnb has long been mentioned as an I.P.O. candidate. Unlike other prominent technology start-ups that are backed by venture capital, the company is not burning through investor money to pay for its operations. Airbnb is profitable, according to two people briefed on its finances who spoke on the condition of anonymity because the financial statements are private.

Still, Brian Chesky, the chief executive of Airbnb, said in an interview in November that, although he was not opposed to a public offering, the company had no immediate plans for one.

“I think companies should go public when it’s the best thing for the mission, but we don’t have those immediate needs,” Mr. Chesky said.

Airbnb, which matches travelers with people who want to rent their homes on a short-term basis, says it has three million listings in more than 190 countries. The company is expanding by buying and investing in new business lines, such as payments, property management and restaurant reservations.

This year, Airbnb confirmed two acquisitions: Tilt, a payments start-up that allows people to more easily split bills; and Luxury Retreats, a company that manages vacation homes. It also announced an investment in Resy, a restaurant reservation app.

The hotel industry is trying to hem in Airbnb, according to the notes from the American Hotel & Lodging Association’s board meeting in January.

The association plans to “counter Airbnb’s ‘we’re just helping the middle-class make ends meet’ narrative with a wave of personal testimonials of consumer harm,” and to work with Congress and state attorneys general to rein in and encourage enforcement actions against companies like Airbnb, notes of the meeting said.

The association did not respond to requests for comment. It includes representatives of 70 hotel, travel and hospitality groups.