16 QUESTIONS IN THIS CATEGORY:

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If no trades occurred during an aggregate period, then no aggregate bar will be generated. For tick data, if no trades occurred, then no tick data would be available.
Jan 18, 2023

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Any trade that occurs will be included, even if it’s canceled. Canceled trades will be indicated by the Trade Correction field ‘e’.
Jan 18, 2023

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We source our data directly from the SIPs. This includes every single trade and NBBO quote that occurs on any of the 19 US exchanges. Other providers typically source from a handful of exchanges instead of all of them.
Jan 18, 2023

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Yes, we provide data for every single trade that occurs, whether that happens during normal trading hours, or extended trading hours. Our tick-level market data will stream normally during pre-market and after-hours.
Jan 17, 2023

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Exponential Moving Average (EMA): A bit more complex, this moving average is similar to SMA, but places greater weight on more recent data, as it is viewed as more relevant or important.
Jan 16, 2023

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All data provided on Polygon is provided for informational purposes only, and is not intended for trading or investing purposes. Polygon provides all information as is. You must not redistribute information displayed on or provided by Polygon. Stock prices displayed in the ticker are from a subset of exchanges, this price does not represent the real-time price from the SIP.

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