6 institutions reported holding $14.7M of M&TBANKCORPORATION (MTB.WS) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($10.2M), SIMPLEX TRADING, LLC ($4.0M), GROUP ONE TRADING LLC ($454,784), McIlrath & Eck, LLC ($13,890), NBC SECURITIES, INC. ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $10.2M | 49,500 | Added |
| 2 | SIMPLEX TRADING, LLC | $4.0M | 19,500 | Added |
| 3 | GROUP ONE TRADING LLC | $454,784 | 2,200 | Trimmed |
| 4 | McIlrath & Eck, LLC | $13,890 | 13,000 | New |
| 5 | NBC SECURITIES, INC. | $0 | 0 | Exited |
| 6 | Kohmann Bosshard Financial Services, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31