Old Second Bancorp Inc (OSBC) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for OSBC. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 177 institutions reported holding OSBC, with 38.8 million shares worth $902.2 million in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock | 4,298,683 | $100M | INCREASED |
| Vanguard | 3,421,510 | $80M | INCREASED |
| Dimensional Fund Advisors | 2,498,671 | $58M | INCREASED |
| State Street | 1,839,202 | $43M | INCREASED |
| Davis Asset Management, | 1,800,000 | $42M | UNCHANGED |
Full institutional holdings, insider history, and congressional trades for Old Second Bancorp Inc on SentiSense.