The resources below will help you identify competitors. Once you have done that use the resources listed under Company Information tab to research those competing companies.
Business Source Complete-to identify competitors, consider searching in this database (and others) on the name of your company and the phrase "market share"
Mergent Online- search for a company and click on the "competitors" tab to see a list of competitors within the industry. You can then create a comparison report using the Company Analysis feature.
IBISWorld - provide comprehensive and up-to-date collection of US Industry Research covering more than 700 Industries at the 5-digit NAICS codes. It includes factual and easy-to-use reports on any industry in the US economy and identifies competitors.