Companies sell shares to raise money for growth. In return, the people who buy them own a fraction of the company and are entitled to a portion of its future success. If the business does well and becomes more valuable, the shares can rise in price, and some companies also pay out part of their profits to shareholders as dividends. If the business does poorly, the shares can fall, and in the worst case a company can fail and its shares become worthless.
Owning a share is therefore very different from lending money or holding cash. You are taking part in the ups and downs of a real business, with the potential for growth but also the risk of loss. This is why the value of shares can move so much, and why they are generally considered a long-term investment rather than a place to keep money you may need soon.
Most investors do not try to own a piece of every company directly. They may hold a handful of individual shares they have researched, spread their money across many companies through funds, or combine the two. Whatever the approach, understanding that a share represents real ownership of a business is the starting point for everything else.
This content is general information, not investment advice.