Why would a stock have a .a at the end of its ticker symbol?

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9. Is Nordstrom publicly traded?
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Tags

1. #securities
2. #class
3. #traded
4. #which
5. #issues
6. #united
7. #nasdaq
8. #reports
9. #company
10. #means
11. #immediately
12. #states
13. #exchange
14. #commission
15. #shares
16. #stock
17. #indicates
18. #investor
19. #behind
20. #symbol