How many tickers can you subscribe to on a single Polygon WebSocket connection?

Feb 14, 2022
Updated: Feb 13, 2023

There is no limitation on our side to the number of tickers you can subscribe to at once as long as you can consume the data fast enough. You can subscribe to all tickers and all events simultaneously in one WebSocket feed.

You can subscribe to all tickers using the "*" character. For example, to subscribe to trades for the entire US equities universe, you can use {"action":"subscribe", "params":"T.*"}

You can also use a comma separated list of events + tickers to subscribe to a custom list of tickers/events, such as {"action":"subscribe", "params":"T.AAPL, Q.MSFT, AM.F, A.SPY"}

The maximum character limit you can insert in the subscribe message is 1MB worth of characters.


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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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