Amenity is using FactSet symbology solution identifiers to identify the main ticker in case of symbology change. Each company might have multiple unique identifiers such as ticker-region, sedol, isin and cik. However, those may change over time and as the company changes. FactSet's unique identifier strives to stay constant over time to provide an easy path to track companies.
- By using the optional parameter "identifiers=main", the API call will show only the main ticker.
- When using "identifiers=all" the API call will show all the tickers that are related to the target company ticker by symbology.
It is highly recommended to include "identifiers=main" in the API call.
Example of using Symbology solution:
Base case - IBM -
A company with multiple tickers -
Extending the selection of tickers over a period where a company changed its main ticker (GOOG to GOOGL) –
Note that in this example you can see how the main ticker changes from GOOG to GOOGL in 2014