A quarterly report is a financial document that provides an overview of a company's performance and financial position during a specific three-month period. It is released by publicly traded companies to keep shareholders, investors, and other stakeholders informed about the company's progress.

Typically, a quarterly report includes financial statements such as the income statement, balance sheet, and cash flow statement, which present the company's revenue, expenses, assets, liabilities, and cash flows for the quarter. These financial statements allow stakeholders to evaluate the company's profitability, liquidity, and overall financial health.

In addition to the financial statements, a quarterly report often includes a management discussion and analysis (MD&A) section. This section provides a narrative explanation of the company's financial results, highlights significant events or trends, discusses future plans and strategies, and may address any risks or challenges faced by the company.

Quarterly reports are required by regulatory bodies, such as the Securities and Exchange Commission (SEC) in the United States, and are an important source of information for investors and analysts to assess a company's performance on a regular basis.