| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | KeyBank National Association | Bank | 12 | $1.49B | 30.58% |
| 2 | Manufacturers and Traders Trust Company | Bank | 4 | $753.8M | 15.52% |
| 3 | Northwest Bank | Bank | 5 | $675.2M | 13.90% |
| 4 | Cornerstone Community Federal Credit Union | Credit union | 6 | $575.9M* | 11.85% |
| 5 | Bank of America, National Association | Bank | 1 | $308.2M | 6.34% |
| 6 | Niagara's Choice Federal Credit Union | Credit union | 5 | $239.1M* | 4.92% |
| 7 | Citizens Bank, National Association | Bank | 3 | $236.5M | 4.87% |
| 8 | CNB Bank | Bank | 3 | $170.0M | 3.50% |
| 9 | Ontario Shores Federal Credit Union | Credit union | 4 | $148.0M* | 3.05% |
| 10 | NBT Bank, National Association | Bank | 1 | $69.2M | 1.42% |
| 10 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 | $4.86B | 20 | 57 | KeyBank National Association | 30.6% | 1,624 |
| 2025 | $4.75B | 22 | 56 | KeyBank National Association | 31.0% | 1,643 |
| 2024 | $4.61B | 24 | 59 | KeyBank National Association | 31.3% | 1,648 |
| 2023 | $4.56B | 24 | 60 | KeyBank National Association | 30.5% | 1,598 |
| 2022 | $4.65B | 24 | 61 | KeyBank National Association | 30.9% | 1,653 |
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.