GREAT PLAINS BANK is an FDIC-insured commercial bank headquartered in EUREKA, SD, established in Oct. 23, 1920, midnight. As of 2025-12-31, the bank reported total assets of $154M and total deposits of $123M. Profitability stands at 1.41% ROA and 8.17% ROE, with a net interest margin of 4.53%. CET1 capital ratio: 17.01%, well above regulatory minimums. NPL ratio: 0.02% · Texas Ratio: 0.08%. Operates 3 domestic branches.
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