The U.S. Equities Basic Shares Outstanding dataset provides authoritative coverage of shares outstanding for U.S. exchange-listed equity securities from 2007 to the present. It delivers a structured historical record of share count changes over time, supporting accurate valuation, capitalization analysis, and regulatory calculations. Key fields include algoseek SecId, ticker symbol, effective date, record creation and change dates, and the number of shares outstanding. The dataset captures changes that became available on the official public sources resulting from corporate actions and other issuer-driven updates that impact outstanding share counts. The dataset is updated multiple times per day, ensuring timely visibility into newly reported or revised share outstanding figures. It is designed to support institutional workflows such as market capitalization computation, earnings-per-share (EPS) analysis, ownership and float calculations, and regulatory reporting.