In many of the markets covered by our Stock Screener, the table not only contains the primary listed companies for that market, but might also contain companies that are listed on that market as an additional or optional placement.
If you want to filter out these additional symbols, we have introduced a new “Show primary exchange symbols only” setting. You can find it in the menu by right-clicking on the Ticker column.
For example, AAPL’s primary listing is on the U.S. Nasdaq exchange. However, the company also lists its ticker on other international exchanges, such as the Italian market.
If you don’t want to see this data, you can select to exclude these symbols. First, select the Italian market in the Stock Screener. With the “Show primary exchange symbols only” setting turned off, you can see that AAPL is at the top of the table.
If you only want to see symbols that have their main listing in the Italian market, you can enable the “Show primary exchange symbols only” setting, and exclude optional additions like AAPL from your list.