Deep Dive into Trade-Level Data with Flat Files
Explore stock market trades with Flat Files, an easy workflow for accessing and analyzing comprehensive trade-level data across all stocks on any given day.
editor
From the blog
Read about the latest news, updates, and case studies
Integration: QuantConnect
We are excited to announce our integration with QuantConnect! This offering empowers users with state-of-the-art research, backtesting, parameter optimization, and live trading capabilities, all fueled by the robust market data APIs and WebSocket Streams of Polygon.io.
jack
Integration: everviz
We are thrilled to announce our latest partnership with everviz, bringing embeddable visualizations of Polygon.io data to any platform.
jack
Historical File Downloads Included In All Plans – No Really
Polygon now includes daily historical Flat Files in all paid plans at no extra charge, featuring a new web-based File Browser and S3 access for simplified data exploration and integration.
editor
Pattern for Non-Blocking WebSocket and REST Calls in Python
This tutorial provides a step-by-step guide on implementing non-blocking WebSocket and REST API calls in Python, demonstrating efficient real-time data processing techniques essential for high-volume streaming applications.
editor
Release Notes - December 2023
We introduce enhanced WebSocket API features, expanded crypto offerings, improved data latency, Slack integration for system monitoring, along with insightful case studies and practical tutorials.
editor
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.
jack
Financials API Glossary of Fields
An individual financial report can have data points specialized for a certain industry, or even a specific company. To make the data more user-friendly and comparable across reports, we parse the XBRL and map tags to the generalized financial concepts that we return in our API.
michael
Mapping Market Movements with Polygon.io and D3.js Treemap
Learn how to create an interactive Treemap visualization of stock market conditions using Polygon.io's Snapshot API and D3.js.
editor
Building a Unix top-inspired Tool to Monitor the Stock Market in Real-Time
In this tutorial, we will learn how to build a real-time stock market monitoring tool using Python and Polygon.io's API, inspired by Unix's top command, to process and visualize streaming trade data across the US stock market.
editor
Release Notes - September 2023
We've introduced historical second aggregates based on user feedback, and enhanced our system monitoring to ensure you're always updated in real time.
editor
Polygon.io + Kotlin: Unlocking Real-Time and Historical Stock Market Data
A comprehensive guide for accessing market data using Polygon.io's APIs and the JVM client SDK written in the Kotlin programming language.
editor
Release Notes - July 2023
We've been hard at work introducing new features such as our Universal Snapshot API, a Polygon plugin for ChatGPT, and Indices data. We've also made a number of improvements to our services and have some exciting case studies and tutorials to share with you.
editor
Case Study: Algorithmic Trading With Go
In this case study, we are excited to share an insider's perspective and look under the hood of how a Polygon.io customer built an automated retail trading bot that is capable of monitoring the entire stock market in real-time.
editor
Track Movements Across Markets with our New Universal Snapshot API
Discover the newly launched Universal Snapshots API, a powerful tool providing streamlined and consistent market data across Stocks, Options, Indices, Forex, and Crypto assets, all in one API call - enhancing your market analysis and decision-making process.
editor
Announcing the Polygon ChatGPT Plugin
Introducing the Polygon plugin for ChatGPT, a powerful tool that simplifies financial research by providing easy access to real-time and historical market data for Stocks, Options, Indices, Forex, and Crypto.
editor
Finding Correlation Between Stocks
Explore how to identify stock correlations and enhance portfolio diversification by building correlation matrices with Python and Polygon's python-client library in this comprehensive tutorial.
editor
Indices Data Has Arrived
We are excited to announce the launch of the Indices API endpoints, offering real-time and historical market data for over 11,400+ Indices, including the S&P 500, Dow Jones Industrial Average, Nasdaq-100, and the VIX. With access to comprehensive market data, businesses and individual investors can make informed decisions in today's rapidly evolving financial markets. We have brought the same low-latency and developer-centric API design of our
editor
Polygon.io + JavaScript: Unlocking Real-Time and Historical Stock Market Data
A comprehensive guide for accessing market data using Polygon.io's APIs and the JavaScript programming language.
editor
Speed Up Downloads: Gzip Compression for Polygon's API
Discover the benefits of using gzip compression for faster downloads and how to get started with Python, Go, and cURL.
editor
Simplifying Data Access with CSV Support
We are excited to announce the launch of CSV support for our REST APIs. You can now choose between JSON and CSV formats when making requests to our platform for Stocks, Options, Forex, and Crypto market data. With the addition of CSV support, you no longer need to transform or convert the data manually, which makes working with financial data more accessible. In this blog, we will walk you through the new feature, provide examples, as well as links to our docs for reference. Getting Started By
editor
Deep Dive: Stock and Options Trade Activity In Wake Of Regional Bank Failures
We will analyze the trade activity around US regional banks that have been experiencing financial difficulties, using a data-driven approach with Polygon's stock and options market data
editor
Release Notes - March 2023
What's new at Polygon? Indices data, CSV support and improved company financials are just a few of the things we've added to the platform over the last few weeks. Read more about our recent feature launches and improvements.
katie
Polygon.io + Go: Unlocking Real-Time and Historical Stock Market Data
A comprehensive guide for accessing stock market data using Polygon.io's APIs and the Go programming language.
editor
Vendor Display Rule
Broker-dealers need to use full SIP data on screens where trades can be implemented. FINRA may impose fines if the Vendor Display Rule isn't followed.
stan
Polygon.io + Python: Unlocking Real-Time and Historical Stock Market Data
In this blog post, we will show you how to access market data using Polygon's Stock API and the Python programming language. Polygon is a financial data platform that provides both real-time and historical market data for Stocks , Options [https://polygon.io/docs/options/getting-started?utm_source=blog&utm_cam
editor
Introducing Options Chain Snapshot API
Level up your trading game by getting the most up-to-date price data for an asset's entire options chain in a single API call. Sort and filter by every aspect of an options contract. Get the latest price changes, greeks, and implied volatility for each option in the chain, delivered through a lightening fast API. Our new Options Chain Snapshot API makes it easy to get
katie
What’s in a Market Cap?
How do you calculate market cap? The formula to calculate market cap is share price x weighted shares outstanding, where weighted shares outstanding represents the equivalent number of shares of a particular share class that equates to the whole company.
michael
Case Study: Birdwingo
Birdwingo recently launched their mobile investment application, bringing an innovative twist to the traditional retail-brokerage landscape by allowing Gen-Z and millennial users to align their investments with their personal convictions. The first of its kind to the European market, Birdwingo provides Gen Z and Millennials a platform to discover companies and build investment portfolios that align with and reflect their personal values and preferences. "We want to
jack
New Technical Indicators APIs
After hundreds of requests from our community, we’re happy to announce the release of our new Technical Indicators APIs.
jack
OTC Stocks Have Arrived
We've just rolled out OTC data to every stocks plan on the Polygon platform. No additional subscription is needed, just query any OTC ticker from our REST or WebSocket APIs and get data for all US OTC venues.
katie
Polygon Integrates Nasdaq Basic
Today, we’re proud to announce a new initiative with Nasdaq to integrate Nasdaq Basic data into the Polygon market data platform with the launch of Poly.feed Max. Poly.feed Max with Nasdaq Basic offers a comprehensive National Best Bid and Offer (“NBBO”) alternative to consolidated market data, and it includes all of the U.S. equities price, reference, and fundamental data needed to build your next financial application. Poly.feed Max makes all of this data accessible via unlimited APIs runni
peter
OTC Upcoming Changes
We’re excited to announce that Polygon is bringing its easy to use, accessible APIs to the world of Over The Counter (OTC) traded equities. In this post we’ll tell you more about the new features and what API changes to expect. Background on OTC Market Trading in OTC securities offers a comparatively small but important market compared to traditional exchange traded stocks. OTC traders can gain exposure to major international firms such as TenCent, Nintendo, and Danon through American Deposit
matt
Case Study: PlutoHQ
About Pluto: Pluto brings Web 3.0 to retail equities investing, enabling creators and investors to maximize profits across their investment strategies, insights, and ideas. Pluto’s Mission Pluto will bring the power of automated investing to retail traders of all backgrounds. Pluto empowers anyone to become a successful trader by removing complexity and creating a powerful and accessible suite of tools. Pluto and Polygon.io Pluto makes it easy for any investor to design, backtest, and dep
jack
Greeks and Implied Volatility
Greeks and implied volatility are measures used by options traders to quantify risk. While rolling out our options products alpha, we received many requests to expose these in an API. After much research and hard work, we are excited to present, among other products, our new Options Snapshot API , which calculates Greeks and implied volatility on demand for a given contract. In this article we will discu
matthew
Introducing Stock Options APIs
We’ve just launched a new set of Stock Options APIs that change the game for options trading. We’re making available real-time trade and quote data from the full OPRA feed, as well as custom aggregate bars, greeks, open interest, and years of tick-level historical data for the entire stock options market. Real time, full market data on every active options chain — check. Custom aggregates of any duration down to 1 minute — check. 5+ years of historical tick-level data — check. Self-serve sign-
katie
How to Read A Stock Options Ticker
Just like stocks, every option has a unique ticker symbol. There are 4 separate parts to an option ticker. These include the underlying stock ticker, the expiration date, the type of option (call or put), and the strike price.
ian
Case Study: r/WallStreetBets
If I had told you a year ago that amidst a global pandemic, an online community of retail traders would take down a multi-billion dollar hedge fund, would you believe me? Probably not, and that is perfectly reasonable. This pandemic has led to some unprecedented market events. I suppose we can assume this is because everyone was bored quarantining at home and more willing to speculate on the market with their stimulus checks. The increase in retail investors from all around the world helped the
jack
Case Study: Tickblaze
Tickblaze is one of the world’s most advanced platforms for professional quants and active traders. Armed with a modern, sleek, and customizable interface, terabytes of historical data and a robust API for developing trading strategies, they’re taking on the most sophisticated trading platforms. Tickblaze is setting the new standard for automated trading software, and they’re backed by world-class financial market data from polygon.io. Tickblaze is a desktop platform that allows quants to de
jack
Polygon.io partners with Cboe to deliver market data APIs for apps, websites, and displays.
Unlimited APIs, running on world class infrastructure directly inside the exchange data centers, licensed for distribution to an unlimited number of end users.
polygonteam
New Stock Financials API
We’ve just dropped our new Financials API featuring company financials sourced directly from SEC filings. We’ve standardized annual and quarterly company filings into fundamental accounting concepts that are easy to use and compare across companies and industries.
katie
New and Improved Financial News API
Our recently released News API v2 delivers up-to-date content from multiple major financial news outlets, better searching capabilities, and conformity with our standard response structure and pagination patterns.
katie
Introducing New API Pagination Patterns Using Cursors and Query Filter Extensions
We are introducing a new pagination approach that will become the standard across our APIs going forward and query filter extensions that will increase the capabilities of our APIs to allow for more powerful searches.
ricky
Point-in-time Ticker Details, Directly From the Source
Our new experimental Ticker Details API provides company info sourced directly from SEC filings. We've also included point-in-time searching so that you can get detailed data on a company exactly as it was on a given date.
katie
New Point-in-Time Tickers API
Our new point-in-time tickers API is available on an experimental basis. We've added nightly data syncs, pagination, and the ability to query by date. With the added date dimension, you can query the historical info of a single ticker or get an overview of all tickers actively traded on that date.
katie
Announcing WebSocket Docs V2
Updated User Interface We've updated the user interface on our WebSocket documentation according to our latest design patterns. An updated wscat example makes connecting to streaming data from stocks, forex, and crypto as easy as 1,2,3. New inputs make it easier to define parameters, and the updated scrolling behavior ensures everything you need is always within view. Better Content & Examples Channel, parameter, and response attribute descriptions now have
polygonteam
Announcing Docs V2
We've updated the user interface and navigation on our API documentation according to our latest design patterns.
peter
Aggregate Data API Improvements
We have been working on improving our Aggregate Pricing Data APIs and with that comes some corrections to existing behavior. The biggest change is how we handle the timespan parameters from and to respective to the aggregate rollup parameters multiplier and resolution. This article begins by explaining some existing behavior that has not changed, then leads into the timespan changes. Tl;dr The time parameter behavior has been changed to be simpler and matches our original intent of the API. Try
ricky
Polygon.io Announces $6M Series A to Fuel the Expansion of its Financial Data Platform
Polygon.io, a leading market data platform that allows developers to interface with the world's most accurate real-time and historical financial data, announced today that they have raised a $6M Series A financing led by e.ventures with participation from existing investor, Green Visor Capital.
polygonteam
Free Data APIs and a New Dashboard
Today we’re announcing two major updates to make Polygon.io even more accessible to developers: free data and a new developer dashboard for all polygon.io subscribers. Starting today all accounts will have access to free end of day data. Free Data Free data tiers allow developers to sign up and start using our APIs instantly. No credit card required. Starting today all accounts will have access to end of day U.S. equities, forex, and crypto data, including 2 years of historical data at minute
polygonteam
Production Infrastructure Upgrades: Sunday, September 20, 2020
We will be upgrading our production infrastructure Sunday, September 20, 2020 @ 2:00 PM EST.
peter
Understanding Aggregate Bar Delays
Sometimes users reach out to us confused about why they receive an aggregate bar late or twice through our WebSocket feed. This behavior is intentional and designed for quality assurance purposes on our end, here’s why: Trades are occasionally sent to us late. FINRA, for example, has up to 15 minutes to report a trade that happened on any of the dark pools. We deal with these delayed trades differently for second and minute aggregates. Second Aggregation: For sec
jack
Understanding the SIPs
At the core of the securities markets in the U.S. lies the Securities Information Processors (the “SIPs”). The history of SIPs goes back to 1975 when Congress established the concept as part of its 1975 amendments to the Securities Exchange Act of 1934 (the “Exchange Act”) to help establish a national market system for the trading of securities. The SIPs essentially link the U.S. markets by processing and consolidating all bid/ask quotes and trades from every exchange (i.e., core data) into one
peter
Understanding Trade Eligibility
The conditions that are taken into consideration when creating aggregates...
jack
Open Sourcing Docs & Issues
We've decided to open source our swagger docs and make issues public to encourage community participation, improve the documentation, and expedite issue resolution. GitHub Issues https://github.com/polygon-io/issues The goal of this repository is to provide a feedback loop where users can see their issue assigned and track its progress to see how it fits into the rest of the work going on at any given time. GitHub Swagger UI https://github.com/polygon-io/ui-swagger Anyone can now view and
peter
Understanding Professional Status
U.S. stock exchanges like NYSE, Nasdaq, and others require data vendors such as us to collect and maintain personal information and employment information for some of our Stock API data recipients. The fees for the market data that are assessed to data vendors depends on how individual subscribers classify themselves as either Non-Professional Subscribers or Professional Subscribers, as defined below. Per exchange policies, you are considered a Professional Subscriber until you are qualified as
peter
Our New HQ
Creating a space with the proper atmosphere is crucial for encouraging productivity and creativity. Our previous location at Atlanta Tech Village was an amazing beginning. It gave us everything a startup could ask for while developing a new product and eliminating the excess worries for resources & amenities. Our original space at ATVWhile ATV gave us a great start, we wanted a place we could call our own. So we began searching for a new location in late September, 2019. We wanted a modern, lof
polygonteam
Server Upgrades
We've recently added a ton (literally) of additional hardware including entirely new racks, PDUs, and SSDs.
peter
Client Library Updates
Hi everyone! Just wanted to give a brief update regarding the status of the Client Libraries we posted about a few months ago. Since we reached out to our community, several talented developers have stepped up and contributed quality SDKs to our Github . These should help the process of connecting to our RESTful & Websocket APIs [https://polygon.io/do
jack
Planned Maintenance: Sat Feb 22 @ 10:00 AM EST
We plan on upgrading production Kubernetes Saturday, February 22 at 10:00 AM EST.
peter
Case Study: Bradley University
Market data is a driving factor in today’s world of finance. We are so often used to associating it with the corporate world, we sometimes forget the useful and important role it can play in educating our world’s future generation of financial professionals. This is why we were excited when Bradley University , a top-ranked institution founded in 1897, reached out to Polygon.io about building a state of the art ticker-tape display in their new Business Analytics Lab, where
polygonteam
Planned Maintenance: Cage Upgrades 01/17/2020 - 01/18/2020
We will be upgrading to a larger cage in the Equinix datacenter. There are many benefits to the move, however there will be some downtime required during the transition.
polygonteam
20 Startups to Watch in 2020
We are thrilled to have been selected for Atlanta Inno's top 20 startups to watch in 2020! Huge thanks to Atlanta Inno for awarding us and giving us recognition for the work we've accomplished, and the contributions we've made to the market data space. Also thanks to all of our users who contribute to our success and push the boundaries of innovation. We're excited to continue breaking ground and providing quality data apis for the development community in 2020. To read the article and check
polygonteam
Action Required: V1 Aggregates, Historic Trades, and Historic Quotes APIs will be Deprecated on 01/01/2020
Our V1 Aggregates, Historic Trades, and Historic Quotes APIs will be deprecated by the end of this year in favor of V2 Aggregates, Historic Trades, and Historic Quotes APIs beginning 01/01/2020. Customers can continue to use the V1 endpoints until 12/31/2019. We will also continue to offer support for the V1 endpoints until 12/31/2019. Our V2 APIs are built from the ground up and will give customers more flexibly and better service moving forward. We encourage users to switch to using the V2 e
peter
US Stock Market Data APIs for Businesses & Market Professionals
Introducing poly.feed: Access to real-time data from 5 top US stock exchanges & more.
peter
Announcing V2 Tick API
We've made numerous improvements to our Tick API in the V2 update.
jack
Contribute to Polygon's Developer Community
Get rewarded for contributing to polygon.io's developer community.
jack
Case Study: Find My Fills
We are thrilled to announce Proof Trading’s launch of a new, powerful tool for visualizing market activity, findmyfills.com.
jack
Trade ticks not matching Aggregates
Aggregates ( OHLCV ) are a little more complex to calculate than just min,max,sum. There are condition matrix tables you must adhere to in the CTA and UTP specifications.
polygonteam
Action Required: NATS Service will be Deprecated on 01/01/2020
Our NATS service will be deprecated by the end of this year in favor of WebSockets beginning 01/01/2020.
peter
Networking Upgrades: 08/10/2019
We will be performing some networking upgrades this Saturday, August 10, 2019 from 00:00 to 12:00 ET. Please expect some downtime during these hours.
peter
New MarketStatus APIs
We have introduced 2 new APIs to be used to determine the current and future market status. They also have the holidays for individual exchanges.
polygonteam
Changes to Aggregate Feed
We are making a couple small changes to the aggregate feed tick schema. We are removing a few less useful attributes, and adding some that have been much requested. The updated schema will begin streaming this upcoming Monday ( July 23rd, 2018 ).
polygonteam
Free Forex accounts closing soon
We posted a couple months ago that free forex accounts were no longer available, and that current free accounts would be closing soon. Now that the new forex integrations are complete, we must begin paying license fees per user, per month. Which means we can no longer offer forex data freely to users. When: Free forex accounts will lose access to real-time data streams and API calls starting on: 1st of July, 2018 The accounts and their API keys will not be disabled or deleted, however will no
polygonteam
Planned outage 5/25/18-5/26/18
We will be moving datacenters this weekend ( after market hours ) to the Equinix datacenter in NJ. There are many benefits to the move, however it will require downtime during the transition. The transition will start after market close on May 25th @ 20:00ET. The transition is expected to be completed by EOD May 26th. If for any reason this will not be the case, we will send out email updates with the status and updated ETA. Thanks - Polygon Team
polygonteam
Real-Time Forex Data Changes
New real-time forex data plans offer hundreds of currency symbol pairs, with simple and intuitive APIs. Stream real-time data, and use our RESTful APIs for historic data back to 2009.
polygonteam
We're Moving... Datacenters
We are moving into the equinix NY2/NY4 datacenters. The same datacenters as the NYSE, Nasdaq, Bats, CBOE and more. Lower latency, and higher reliability for Polygon customers.
polygonteam
New Metadata APIs
New Meta APIs available. Get information like company info, dividends, splits, news and more.
polygonteam
Addition Forex Banks
We have added an additional cluster of Forex banking institutions. Due to adding this, and plans to add more, we have modified the schema of the forex ticks to include the exchange ID. This will be valuable when looking at the prices between forex banking institutions. The Forex schema will be updated April 17, 2018. Since this is a schema addition, and not editing/removing a key, we expect the impact to be low on client application logic. Thanks,
polygonteam
Aggregate Stream Optimizations
We have changed both channels to only broadcast updates on the tickers which have actually had trades in that timespan. Which means the average is ~1000 ticks/second instead of ~8000. This allows better throughput, and less processing messages of tickers that have not changed.
polygonteam
Schema Updates
We are updating the schemas of the TRADES and QUOTES real-time data feeds. All other real-time feeds, and APIs will stay as they are currently. We are changing the schema of the trades/quotes for smaller and only unique per tick data attributes. This will make the messages smaller, enabling less bandwidth and less processing per tick for encoding/decoding the JSON. New schema ticks will start streaming on market open, Monday, January 29th. Current Trade Schema: { sym: 'MSFT', // Symbol sym
polygonteam
Consolidated Crypto Feed
Polygon.io aggregates the top crypto exchange trades into 1 feed with a standard format. This means you can have a view of the entire crypto market with 1 simple feed. Giving you the most accurate and up to date pricing across the entire market.
polygonteam
Infrastructure Upgrades
Over the past 2 weeks we have made several infrastructure changes and upgrades. The changes touched almost every part of the system, therefor you may have noticed breif latency spikes up to 200ms. However we tried to keep the upgrades completely transparent. The upgrades allow for us to add real-time data feeds more easily, with less latency and better message delivery guarantees. Which means better APIs and more data streams for you. Below are some details for the techies who are interested.
polygonteam
We have a blog!
We finally had the time to create a blog. The main goal for the blog is to have a more standard way of communicating changes, new features and other important details. We also hope to blog about some technical tidbits when time permits. Be sure to subscribe so you get notifications on future posts
polygonteam