A quarterly earnings report is a financial document that publicly traded companies release every three months. It provides important information about the company's performance, including revenue, expenses, and profit or loss during that period. Investors and analysts closely examine these reports to assess the company's financial health and make informed decisions. These reports typically include key metrics such as earnings per share (EPS) and guidance for future performance. Companies like Apple and Amazon use quarterly earnings reports to communicate their business progress to shareholders and the market, influencing stock prices and investor confidence.