Modernizing Wall St. one market at a time.

At Polygon.io, we're on a mission to modernize the financial industry. We believe that the industry runs on old technology, and we're here to change that.

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By developers for developers

Made for builders, founders, scholars, dabblers, and dreamers

Standardized JSON / CSV.
Our data is available in both JSON and CSV formats, making it easy for you to integrate it into your application.
Client Libraries.
Our client libraries make it simple to access and use our data, so you can spend less time worrying about the technical details and more time building your application.
Tutorials & Examples.
We know that getting started with a new API can be hard, which is why we provide tutorials and examples to help you get up and running in no time.
from polygon import RESTClient

client = RESTClient("API_KEY")

aggs = []
for a in client.list_aggs(
    "AAPL",
    1,
    "minute",
    "2022-01-01",
    "2023-02-03",
    limit=50000,
):
    aggs.append(a)

print(aggs)
Rows of Data
1 Trillion+
Raw Data
2 Petabytes
Uptime
99.99%
Messages/sec
70 Million

Intuitive and easy-to-use

Powerful data, simple access

Choose the data access method that suits your needs and get started today.

Flat Files

Our S3 interface lets you access our flat files easily and seamlessly. With just a few clicks, you'll have the data you need to power your applications.

API

Our Restful and WebSocket APIs provide flexible and powerful options for accessing our data. Whether you need real-time or historical data, we've got you covered.

SQL

Our SQL Query option lets you harness the power of SQL to access our data. With this flexible and intuitive option, you can easily customize queries to fit your needs.

Market data for all

Unblock your next innovation

We're committed to providing fair access to the financial markets for everyone, not just the big players on Wall Street. That's why we offer the same institutional-level data access to both companies and individuals alike.

Direct from the source

No middlemen, just us

We're located in the datacenter with direct fiber cross-connects to the exchanges. This is a key advantage that sets us apart from other vendors who rely on third-party market data providers.

With Polygon.io, you can trust that you're getting the most accurate and up-to-date financial data to power your applications.

About Polygon.io →

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Built with Polygon

You're in good company

Whether you're building a trading app, a robo-advisor, or anything in between, our institutional-level data access can help you make better decisions and deliver better results.

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    "We had no idea the landscape around market data was so complex. Polygon did the best job at simplifying the entire process."

    Adam Hano
    Co-Founder
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    "Polygon.io has been amazing to work with, and has allowed Fool.com to display US Equities data through their intuitive, easy to use APIs."

    Yervand Khoranian
    Investment Ops Specialist
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    "Polygon.io APIs have set the standard for easy access to financial market data, and have proven to be extremely robust and reliable over the course of our partnership."

    Fergus Colleran
    Ops Manager, Wealth & Trading
  • Everything you need

    Market data platform

    Our API is easy to use, fast, and reliable, so you can spend less time worrying about data and more time building your app.

    API first approach
    Familiar RESTful APIs and WebSockets to consume data in a language agnostic way.
    Financial data platform
    Intuitive access to financial data in real-time and access to the world’s financial history in an instant.
    Accurate, fast, and reliable
    Real-time data at <20ms latency. Complete redundancy, horizontal scalability, and built on proven technologies.
    Institutional grade data
    Directly from major exchanges. Clean, normalized data without survivorship bias.
    Extensive documentation
    We’re passionate about documentation and are always adding more tutorials, example projects, and explainers to support learners.
    Simple pricing
    Unlimited access and simple, transparent 
monthly pricing across all available asset classes.

    What will you build?

    Discover the power of a market data platform that breaks down barriers and levels the playing field.

    From the blog

    See what's happening at Polygon

    case study fey Feature Image

    Case Study: Fey

    Discover how Fey, a rising star in fintech, transformed their financial application's capabilities with Polygon.io's API services. Dive into our latest case study to see how we're powering innovation in finance.