Polygon Review (August 2026)
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
What is Polygon's Revenue?
Polygon's estimated revenue is $7M.
What does Polygon do?
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
How fast is Polygon growing?
Polygon has changed by -0.6% in the last 3 months according to SimilarWeb.
How do people find Polygon?
People visit Polygon through various channels. 100% find them through search engines.
How do people interact with Polygon?
Last month, Polygon received 16.6K visitors who spent an average of 7:45 minutes on the website and visited 1.6 different pages per session. Overall, 86% of people bounce on the first visit.
Who uses Polygon?
Polygon's top market is Brazil and they receive 32% of visitors from there. The 2nd is United States with 25%. The 3rd is United Kingdom with 10%.
Traffic Growth (last 3 months)
Traffic Sources
Top Countries
The quality of data is very bad
The quality of data is very bad, incorrect data for prices, statements, data gaps
YFinance is better
YFinance is better. I subscribed to Polygon.io intending to build a simple .XSP index options screener—something straightforward, based on defined delta, IV, OI, and expiration filters. That’s it. They also don't even provide HV.... I couldn’t even get that done at the $79/month tier. Not with: Gemini Pro 2.5 ChatGPT-4 with Code Interpreter CoPilot Options SDKs O1 Pro Nothing could reliably pull the necessary data and compute trades without hitting rate limits, broken endpoints, or documentation that reads like it was written during a hangover. Their options API is a complete joke. Greeks are delayed or unavailable. OI data is hit-or-miss. Filtering is non-existent unless you want to write your own query engine with duct tape and pray. Even basic things like “get all XSP options expiring today” turn into hell. If you're a retail trader, avoid. If you're building anything rule-based with AI or GPTs, Polygon is a productivity trap with a billing system. I’ve had better data from open-source Yahoo Finance wrappers. At least those don't pretend to be institutional-grade.
Inaccurate data, sleeping support can't help you, missing splits - so incorrect prices
Data is totally inaccurate. Duplicating splits, missing splits - that's why incorrect prices for months and nobody cares. After contacting support (must respond in 15 mins) after 2 hours they just told: "Oh, I see some mistakes. We'll try to correct errors, it'd take some time." Seriously?!?! No apologies! Just errors - oh, it's ok, never mind. Yeah, after couple of weeks we'll correct them.... Never buy their service!
Disappointing Experience: Unresponsive Support, Inaccurate Data, and Outdated SDKs
I had high hopes for Polygon.io, but my experience has been nothing short of disappointing. From unresponsive support channels to inaccurate data and outdated SDKs, this platform has failed to meet even the most basic expectations. First and foremost, their support channels are essentially black holes. Whether it's reaching out via Github, email, or chat, I've received absolutely no response. It's frustrating to encounter issues with their service and have no way of getting assistance or clarification. Moreover, the accuracy of the data provided by Polygon.io leaves much to be desired. One glaring issue is with dividend information. For instance, stocks like USOI are shown to have dividends of exorbitant amounts, like $8 or more, which is simply incorrect. Additionally, dividend dates are often wrong or inconsistent, making it impossible to rely on this data for investment decisions. Furthermore, the SDKs provided by Polygon.io are outdated, making it challenging to integrate their services seamlessly into applications or platforms. In today's fast-paced technological landscape, having up-to-date SDKs is crucial for developers to leverage the full potential of a service. Lastly, Polygon.io is lacking fundamental features that one would expect from a data provider in this space. Whether it's comprehensive data coverage, robust analytics tools, or reliable real-time updates, the platform falls short on multiple fronts. Overall, my experience with Polygon.io has been extremely unsatisfactory. With unresponsive support, inaccurate data, outdated SDKs, and lacking features, I cannot recommend this platform to anyone seeking reliable financial data and services.
Promises Not to Throttle; Throttles Anyway, Returning Invalid Data
Polygon cannot deliver on their promise of "unlimited API calls". After working through issues with Polygon returning invalid JSON -- without any help from customer service representatives who are completely unaware of the product they provide support for -- Polygon informed me that they would begin throttling requests for my account six weeks after I subscribed. While they refunded me for the current month I paid for, they refused to refund me for the previous month and would not explain why my usage was acceptable then and wasn't going forward. I've since switched over to ThetaData without issue.
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