| # | Institution | Type | Branches | Deposits | Share |
|---|---|---|---|---|---|
| 1 | Manufacturers and Traders Trust Company | Bank | 25 | $4.58B | 16.64% |
| 2 | ESL Federal Credit Union | Credit union | 20 | $3.68B* | 13.36% |
| 3 | KeyBank National Association | Bank | 19 | $3.30B | 12.00% |
| 4 | JPMorgan Chase Bank, National Association | Bank | 18 | $3.15B | 11.43% |
| 5 | The Canandaigua National Bank and Trust Company | Bank | 18 | $2.54B | 9.23% |
| 6 | Bank of America, National Association | Bank | 10 | $1.69B | 6.16% |
| 7 | Citizens Bank, National Association | Bank | 16 | $1.66B | 6.03% |
| 8 | Five Star Bank | Bank | 8 | $1.37B | 4.99% |
| 9 | Genesee Regional Bank | Bank | 3 | $1.08B | 3.91% |
| 10 | The Summit Federal Credit Union | Credit union | 9 | $786.1M* | 2.86% |
| 27 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 | $27.52B | 37 | 209 | Manufacturers and Traders Trust Company | 16.6% | 954 |
| 2025 | $26.09B | 36 | 203 | ESL Federal Credit Union | 17.2% | 1,036 |
| 2024 | $25.23B | 36 | 204 | ESL Federal Credit Union | 17.4% | 1,037 |
| 2023 | $25.52B | 36 | 210 | ESL Federal Credit Union | 18.4% | 1,040 |
| 2022 | $27.19B | 36 | 209 | Manufacturers and Traders Trust Company | 17.4% | 1,058 |
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.