Lest Oklahomans forget which is the largest home-based banking company in the state, Tulsa's BOK Financial Corp. wants to remind them.

The closely held BOK currently airs 10 television commercials statewide that hammer home the point. "We're not building an empire ... just a state," says one ad. "Were you just traded to a bank to be named later? Sign up with the home team," encourages another.

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