The companies on this list includes firms with annual revenue greater than $2 billion and either too few shareholders to be required to file financial statements with the Securities and Exchange Commission or have shares whose ownership is restricted to some group, such as employees or family members.
"Market share is, quite simply, the ratio of sales for one company's product or product line to the total market sales of that product or product line, expressed as a percentage of the market" (p. 147). This book is located in the Reference Collection on the 1st floor of Library. Market Share is addressed and explained on pages 147-149; you may find this information helpful.
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Presents comparative business statistics featuring descriptive title, data and market description, a list of producers/products along with their market shares, and cites original sources. Annual publication, access 1999 - present.