Shares, also known as portions, represent ownership in a company. When individuals buy shares, they become partial owners and can benefit from the company's profits, typically through dividends or an increase in share value. The total number of shares issued by a company determines its market capitalization, which reflects its overall value in the stock market. Investing in shares allows individuals to participate in the financial growth of a company. However, the value of shares can fluctuate based on market conditions, company performance, and investor sentiment. Understanding the risks and rewards associated with shares is essential for making informed investment decisions.