Old Second Bancorp, Inc. · NASDAQ:OSBC
Old Second Bancorp, Inc. shareholders
As of Jun 30, 2026, 178 institutions reported holding Old Second Bancorp, Inc., 76.3% of its shares. Largest: BlackRock, Vanguard and Dimensional. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Old Second Bancorp, Inc. | Change | Filed |
|---|---|---|---|---|
| BlackRock | 4.3M | 8.4% | +172K | Aug 7, 2026 |
| Vanguard | 3.42M | 6.7% | +48,998 | Aug 13, 2026 |
| Dimensional | 2.5M | 4.9% | +110K | Aug 11, 2026 |
| State Street | 1.84M | 3.6% | +240K | Aug 7, 2026 |
| Davis Asset Management, L.P. | 1.8M | 3.5% | no change | Aug 12, 2026 |
| American Century | 1.78M | 3.5% | +193K | Aug 12, 2026 |
| Goldman Sachs | 1.62M | 3.2% | −66,671 | Aug 14, 2026 |
| FJ Capital Management LLC | 1.46M | 2.9% | −44,689 | Aug 14, 2026 |
| Boston Partners | 1.42M | 2.8% | −28,724 | Aug 4, 2026 |
| Geode Capital | 1.35M | 2.7% | +67,421 | Aug 12, 2026 |