Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Company stock listed in multiple exchanges?
Keep in mind that the exchanges do not hold, buy, or sell the stock - people (or funds) do.  All the exchange does is facilitate the sale of stock from one entity to another. So the shares outstanding (and market cap) for a company are set regardless of how many exchanges the stock is listed on.  The company typically indicates the number of shares outstanding in its financial statements.  I do not know if the exchange itself keeps track of shares outstanding; it may just report whatever the company publishes. So theoretically, if you wanted to buy all of the stock of a company, you could do it all in one exchange, provided that all the existing holders of the stock were willing to sell you their shares.  There are many issues with that, though, which I don't think are germane to your question.