What stores does Walmart own?

No because Wal-Mart does not possess a banking license in any part of the United States and any banks you see in their stores such the SunTrust Bank in the Southeastern U.S. are owned and operated directly by the bank themselves who are subleasing the store space from Wal-Mart.

IMPROVED ANSWER

The answer is no, Wal-Mart do not own the banks in their stores. There are actually "partnering" or co-branding. It is a strategy that benefits both Wal-Mart and the banks. People choose to come to Wal-Mart because it is convenient for them to get their money from the banks. The banks get more business from Wal-Mart customers who forgot to bring their money.