It is the portion of a market controlled by a particular company or product. For example company ABC has 60% market share of soaps in India.
Market share shows the size of a company in relation to its market and its competitors by comparing the company’s sales to total industry sales.
It also tells how much of the total market the company has captured and how much is left to be captured. This helps in judging the market standing and opportunities that lie ahead for the company!