Does Polygon offer pre-market and after-hours data?
Yes, we provide data for every trade that occurs, including during pre-market and after-hours. Our tick-level market data streams during these extended hours as well.
While our Aggregates endpoint does not have a parameter to exclusively return normal trading hours data, you can pass nanosecond UTC timestamps into the ‘from’ and ‘to’ parameters to indicate that you would only like the data returned to be within the 9:30 AM - 4 PM timeframe or during pre-market or after-hours.
It is important to note most extended hour trades tend to have 'Sale Conditions' attached that prevent them from updating aggregates. This causes there to be fewer aggregates during extended hours as opposed to normal trading hours. You can learn more about trade conditions and how they affect aggregates in our blog post
Talk with our market data experts
Reimagining financial market data for the 21st century.
Can’t find the answer you’re looking for? Contact our team.
FAQ
Stocks
Stocks
FAQ
Data Coverage
Stocks
FAQ