Commercial business information providers who specialize in private company research offer information that cannot be found through public filings and other relatively easy information sources. But can their information be trusted as accurate and up to date? Generally, yes. These providers, especially the best-known ones, specialize in private company research. If the information isn't useful and current, their own business models suffer. But private company research can be expensive. It's still worth it to shop around for the best provider. Check to see if the information provider offers sample company reports, too.
Private companies are not always required to list their profiles and earnings reports, like public companies. If you're looking for private company research reports, a business solutions provider like Manta can help.