| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | CoVantage Credit Union | Credit union | 3 | $439.1M* | 72.72% |
| 2 | JPMorgan Chase Bank, National Association | Bank | 2 | $72.4M | 11.98% |
| 3 | BMO Bank National Association | Bank | 2 | $29.8M | 4.94% |
| 4 | Bank of Sun Prairie | Bank | 1 | $28.5M | 4.72% |
| 5 | Associated Bank, National Association | Bank | 1 | $26.3M | 4.36% |
| 6 | The Peshtigo National Bank | Bank | 1 | $7.7M | 1.28% |
* Credit-union deposits are estimated (June total shares spread evenly across branches).
| Year | Deposits | Institutions | Branches | Leader | Top share | HHI |
|---|---|---|---|---|---|---|
| 2026 | $603.9M | 6 | 10 | CoVantage Credit Union | 72.7% | 5,499 |
| 2025 | $560.3M | 6 | 10 | CoVantage Credit Union | 74.3% | 5,742 |
| 2024 | $561.7M | 6 | 9 | CoVantage Credit Union | 78.7% | 6,342 |
| 2023 | $652.2M | 5 | 9 | CoVantage Credit Union | 82.9% | 6,966 |
| 2022 | $706.5M | 5 | 9 | CoVantage Credit Union | 82.9% | 6,971 |
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.