Polygon.io

About Polygon.io

Massive is a comprehensive financial data platform designed to modernize the financial industry by providing developers, builders, and institutions with fast, reliable, and institutional-grade market data. It offers multiple data access methods—including flat files, RESTful and WebSocket APIs, and SQL queries—directly connected to major exchanges with minimal latency. The platform is suitable for anyone building trading apps, robo-advisors, or data-driven financial tools who needs scalable, real-time, and historical data.