Polygon.io

What is Polygon.io

Polygon.io is a stock market API that offers real-time and historical tick data, with unlimited usage via REST or WebSockets. It provides standardized JSON and CSV formats for easy integration into applications. The platform aims to modernize the financial industry by providing powerful data access options, including flat files, APIs, and SQL queries. It offers market data for stocks, options, indices, and currencies, and prides itself on being directly connected to major exchanges for accurate and reliable data.

Key Features

• API Access: Provides standardized JSON and CSV formats for easy integration into applications.
• Data Access Methods: Offers flat files, RESTful and WebSocket APIs, as well as SQL querying options.
• Market Data Coverage: Provides market data for stocks, options, indices, and currencies.
• Direct Source: Ensures accurate and up-to-date financial data with direct fiber cross-connects to exchanges.
• Institutional-Grade Data: Offers clean, normalized data without survivorship bias.