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, profit, and expenses. Investors and analysts use this report to assess the company's financial health and make informed decisions about buying or selling stocks. These reports typically include comparisons to previous quarters and the same quarter from the previous year. They may also offer insights into future expectations and business strategies. Companies like Apple and Amazon are required to file these reports with the Securities and Exchange Commission (SEC).