Polygon Stocks REST API

Polygon (rebranded as Massive in early 2026) exposes real-time and historical US equity market data via a REST API at `https://api.polygon.io`. This specification covers a representative subset of the Stocks API: aggregate bars, daily open/close, grouped daily bars, and previous-close. Authentication uses an API key, sent either as the `apiKey` query parameter or as `Authorization: Bearer `. Contact Support: Name: Polygon Documentation

• Finance
• Fintech
• Market Data
• Stocks
• Options
• Forex
• Crypto
• Indices
• Futures
• WebSockets
• Real-time
• Historical
• Public APIs
• Postman Collection

Overview

Polygon Stocks REST API is a Postman Collection published by Polygon on the APIs.io network.

Polygon (rebranded as Massive in early 2026) exposes real-time and historical US equity market data via a REST API at https://api.polygon.io. This specification covers a representative subset of the Stocks API: aggregate bars, daily open/close, grouped daily bars, and previous-close. Authentication uses an API key, sent either as the apiKey query parameter or as Authorization: Bearer <apiKey>. Contact Support: Name: Polygon Documentation

The collection contains 4 requests organised into 20 folders.

Tagged areas include Finance, Fintech, Market Data, Stocks, and Options.

Requests & Folders

v2

v1