| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Bank First, N.A. | Bank | 2 | $676.5M | 18.28% |
| 2 | Oostburg State Bank | Bank | 4 | $388.4M | 10.49% |
| 3 | UMB Bank, National Association | Bank | 4 | $294.6M | 7.96% |
| 4 | Wells Fargo Bank, National Association | Bank | 2 | $288.0M | 7.78% |
| 5 | Kohler Credit Union | Credit union | 6 | $283.7M* | 7.67% |
| 6 | Associated Bank, National Association | Bank | 1 | $262.6M | 7.10% |
| 7 | U.S. Bank National Association | Bank | 2 | $216.8M | 5.86% |
| 8 | National Exchange Bank and Trust | Bank | 5 | $214.9M | 5.81% |
| 9 | BMO Bank National Association | Bank | 3 | $212.8M | 5.75% |
| 10 | Unitedone Credit Union | Credit union | 4 | $161.5M* | 4.36% |
| 11 more institutions, year-over-year share and branch changes with Pro →$29/mo, cancel any time. | |||||
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $3.70B | 21 | 48 | Bank First, N.A. | 18.3% | 842 |
| 2025 | $3.58B | 20 | 46 | Bank First, N.A. | 18.9% | 864 |
| 2024 | $3.47B | 20 | 45 | Bank First, N.A. | 18.7% | 875 |
| 2023 | $3.52B | 21 | 49 | Bank First, N.A. | 17.3% | 858 |
| 2022 | $3.60B | 21 | 51 | Bank First, N.A. | 16.8% | 847 |
Every institution above links to its profile — ratios, peer medians and this quarter’s change signals. Pro adds the full table, share movement and CSV export.