Usually you can extract information/data like this from financial data vendors (Bloomberg, Reuters, etc.). I am going to explain how you can get volumes of a stock traded on different exchanges using Bloomberg:
- Type in the search box AAPL
- Type in VWAP
Then you can play around with different parameters like
volume, etc. Under the column
Breakdown you have the names of the exchanges where the security is traded and respective volume under the column
You can also check the exchanges on OpenFIGI. Just refine the filter by selecting
Common Stock in
Security Type. Unfortunately, this page only gives the Exchange codes. Here is a link to an excel file where you can find the full details of Exchanges by their code.
Let me know if you have any further questions.