FAQ
49 articles
What is the difference between RESTful APIs and WebSockets?
What are the Securities Information Processors (SIPs)?
How can I connect to a Polygon WebSocket?
What is the average latency for Polygon.’s WebSockets?
What does Polygon do with delisted tickers?
What are pro and non-pro classifications for Polygon’s stock data?
How does Polygon deal with minutes where no trades occurred?
Why are there missing aggregates in Polygon’s data?
How does Polygon handle ticker changes and acquisitions?
How does Polygon’s feeds handle canceled trades?
How does Polygon treat hourly bars when querying regular trading hours (9:30 AM - 4PM EST)?
How much data is streamed through Polygon’s WebSockets?
What symbols/exchanges are included in Polygon’s data?
Why are there gaps in Polygon’s aggregates when querying a large time frame?
How many tickers can you subscribe to on a single Polygon WebSocket connection?
How many Polygon WebSocket connections can I use at one time?
How much historical data does Polygon have for financial 10K and 10Q reports?
Which timestamps are returned for Polygon’s stock trades and NBBO quotes?
What timezone are Polygon’s timestamps in?
How much historical data does Polygon have?
How quickly can I access Polygon’s market data?
Why are ticker symbols with dashes ‘-’ not showing in Polygon’s system? Example - BRK-A
What does Polygon use for Sector?
What are the different types of tickers that Polygon supports?
What is the request limit for Polygon’s RESTful APIs?
Why am I receiving a late aggregate bar through Polygon’s WebSockets?
Does Polygon have per second aggregates available?
Why is Polygon’s market data different from other providers?
Does Polygon have a market holiday or status page?
Does Polygon have an endpoint that returns the latest trades, quotes and aggregates in one request?
How does Polygon create aggregate bars?
How should I go about reporting a possible Polygon data discrepancy?
How can I redistribute Polygon’s market data?
Why am I “not authorized” when attempting to connect to Polygon’s WebSockets?
Why do Polygon WebSocket disconnects happen?
Where are Polygon’s servers located?
Can I create multiple Polygon API keys?
Does Polygon have a system status page?
Does Polygon offer pre-market and after-hours data?
Does Polygon offer sample code?
Does Polygon offer any education discounts?
Does Polygon offer any startup discounts?
Does Polygon support commodities data?
Can I execute trades through Polygon’s platform?
Can I use Polygon’s data if I am not a US citizen?
Does Polygon support market data outside of normal trading hours?
Does Polygon offer Level 2 data?
What is the max number of tickers I can pass through Polygon's Snapshot?
Does Polygon offer dark pool data?