What does Polygon do with delisted tickers?

Feb 11, 2022
Updated: Jan 18, 2023

Survivorship bias refers to the tendency to focus on the performance of existing stocks or funds without considering those that have failed. To avoid this bias, our market data includes companies that have been delisted from the exchanges and is stored as it occurred on that date.

Additionally we have a Ticker Events Endpoint that displays a ticker symbol's full history, including changes such as mergers, acquisitions, delistings, and ticker symbol changes.


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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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