| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | BMO Bank National Association | Bank | 16 | $3.46B | 8.92% |
| 2 | Summit Credit Union | Credit union | 27 | $3.24B* | 8.38% |
| 3 | Associated Bank, National Association | Bank | 13 | $3.13B | 8.07% |
| 4 | University Of Wisconsin Credit Union | Credit union | 21 | $2.91B* | 7.51% |
| 5 | First Business Bank | Bank | 1 | $2.85B | 7.37% |
| 6 | Lake Ridge Bank | Bank | 17 | $2.59B | 6.68% |
| 7 | U.S. Bank National Association | Bank | 10 | $2.07B | 5.33% |
| 8 | John Deere Financial, f.s.b. | Bank | 1 | $1.56B | 4.03% |
| 9 | One Community Bank | Bank | 8 | $1.49B | 3.84% |
| 10 | JPMorgan Chase Bank, National Association | Bank | 8 | $1.26B | 3.24% |
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* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $38.73B | 60 | 250 | BMO Bank National Association | 8.9% | 497 |
| 2025 | $37.20B | 60 | 253 | BMO Bank National Association | 9.4% | 493 |
| 2024 | $35.73B | 61 | 251 | BMO Bank National Association | 10.7% | 496 |
| 2023 | $35.31B | 63 | 261 | BMO Bank National Association | 10.5% | 527 |
| 2022 | $36.09B | 61 | 259 | Summit Credit Union | 10.5% | 521 |
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.