Understanding common stocks, such as those of Apple Inc. or Microsoft Corporation, is crucial as they represent ownership in a corporation, giving shareholders voting rights and a claim on the company's assets and earnings. When you buy common stock, you become a part-owner of the company, entitled to vote on important issues such as electing the board of directors and approving mergers or acquisitions. Common stockholders may also receive dividends, which are portions of the company's profits distributed to shareholders, though these payments are not guaranteed and can fluctuate based on the company's performance.

It's important to note that the value of common stocks is influenced by various factors, including the company's financial health, industry conditions, and broader economic trends. Market perception and investor sentiment also play significant roles in determining stock prices. As a result, common stock prices can be highly volatile, offering both potential for substantial gains and risks of significant losses.

Investing in common stocks can build wealth over time but requires careful research and consideration of the associated risks. Common stocks are a fundamental component of many investment portfolios, offering both growth potential and an element of ownership in the business world.