Which banks are the big 4?

bank of america checking account 18 BANK OF PONTIAC 5 CAMBRIDGE SVG Bank 23 CAPITAL Community Bank 13 Columbus State Bank 6 Currency Bank 5 First National Bank of Cokato 3 First Savings Bank 4 Grand MO Bank 4 HNB National Association National Bank 14 LAKESIDE Bank 13 Marion Center Bank 7 MinnStar Bank, National Association 4 OptimumBank 19 OSB Community Bank 10 RSNB Bank 8 Southern Bank of Tennessee 1 TexasBank 8 Verus Bank of Commerce 2 Williamsville State Bank & Trust 3