Largest companies list 2009. Companies that didn't fail, companies that are still some of the world's largest companies. I decided to list private companies in US that are still in the running for largest company world wide. Data comes from http://money.cnn.com/galleries/2008/fortune/0805/gallery.private_companies.fortune/index.html. It really says something if business are still going strong even after an economic disaster, so these companies really deserve some recognition.