Top 50 Wal-Mart's on top. Which other companies made the top 50 this year? (more)
Best big companies to work forSee more than 30 companies that made both the Fortune 1000 and Best Companies to Work For lists this year. (more)
20 best investments These 20 stocks offered some of the best returns to shareholders last year. Will they keep rising? (more)
18 of 20
18. Virgin Media
Virgin Media
Fortune 500 rank: 313
2007 loss: $927.6 million

Virgin Media was created last year after a U.S.-based cable company bought Richard Branson's Virgin Mobile, the U.K.'s largest mobile services provider. Branson's Virgin Group is the largest shareholder of the new company, which offers a package of cable, broadband, landline phone, and mobile to U.K. customers, and has seen subscriptions rise in the past year.

But a heavy debt load and a fierce price war in the U.K. have produced a string of big losses. It's a rumored target of private equity heavyweights like Blackstone and KKR.

NEXT: Avis Budget Group
Last updated April 24 2008: 11:01 AM ET
Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.