(Reuters) - WeWork owner The We Company published detailed financial statements for the first time on Wednesday, revealing breakneck revenue growth and soaring losses as it prepares for an initial public offering as early as next month.

FILE PHOTO: People visit the booth of WeWork as they attend the TechCrunch Disrupt event in Manhattan, in New York City, NY, U.S. May 15, 2017. REUTERS/Eduardo Munoz

WeWork has sent a shockwave through the office real estate sector globally with its model of taking on long-term leases and renting them out to corporate clients on a flexible short-term basis.

Its funky, Silicon Valley style co-working environment have proved a hit, transforming it into a major player in the space of a couple of years.

The model, however, has raised skepticism among investors, who are concerned that WeWork could be left holding substantial liabilities in a downturn as clients evaporate.

Flexible office providers have dominated leasing in major gateway cities, most notably London, New York and San Francisco, a sign of growing demand by companies and not just the start-ups and entrepreneurs that put coworking on the map.

Below is a comparison on some of the top office space providers in the market and how they compare on some key metrics:

- WeWork (as of June 30)

Total liabilities: $24.6 billion

Total square feet: Did not report square footage it manages

Footprint: 528 locations in 111 cities across 29 countries

Revenue: $1.54 billion (first half of 2019)

- Boston Properties Inc (as of June 30):

Total liabilities: $13.25 billion

Total square feet: 50.9 million

Total properties: 193

Footprint: United States

Market Cap: $19.67 billion

Revenue: $733.7 million

- British Land Company Plc (as of March 31 - for H1, 2019):

Total liabilities: 3.57 billion pounds ($4.30 billion)

Total square feet: 22 million

Total properties: 127

Footprint: United Kingdom

Market Cap: 4.41 billion pounds

Revenue: 904 million pounds

- IWG Plc (as of June 30 - for H1, 2019):

Total liabilities: 298.1 million pounds

Total square feet: 50 million

Total properties: More than 300

Revenue: 1.30 billion pounds ($1.57 billion)

Footprint: 18 countries

Market Cap: 3.72 billion pounds

Cash-in-hand: 385.1 million pounds (Cash flow before net growth capital expenditure, share repurchases & dividend)

- Mitsubishi Estate Co Ltd (as of Aug. 6)

Total liabilities: 77.26 billion yen ($730.04 million)

Total square: Not available

Total properties: Not available

Revenue: 265.88 billion yen

Cash-in-hand: 243.34 billion yen (at the end of the year)

Footprint: Japan, U.S., U.K., China, Singapore