Database of public and private companies. Use it to find basic info as well as a corporate tree (who owns whom). Search by brand name to find the owner of that brand. Great place to find competitor information.
Use major newspapers for current events about your brand or company. ProQuest Newspapers also has the Wall Street Journal.
Wolfram AlphaA computational database, the money and finance section can be used to search for and compare company finances, bonds, mutual funds, and more. Look carefully at the results--Wolfram Alpha picks the bext fit, and that best fit isn't always correct.
Industry Reports: Many include information on market share. Some of their industry reports may include more niche industry info than IBISWorld Trade Articles: Search for trade articles relating to market share in your industry. So a search for your product and "market share."
How to Locate U.S. Industry Reports
Locating industry reports in Business Source Complete and IBISWorld.
Short videos (3 mins.) will open in a separate window.