Old Second Bancorp Inc
OSBC- Exchange
- Nasdaq
- Industry
- State Commercial Banks
- SEC CIK
- 0000357173
In the last 90 days, Old Second Bancorp Inc insiders filed 0 open-market purchases and 7 sales; 184 institutions reported holding it in 13F filings for Q2 2026, worth $903.3M in total; no superinvestor holds it.
Q2 2026 vs. Q1 2026
How the institutions holding Old Second Bancorp Inc changed between Q1 2026 and Q2 2026.
All holders in Q2 2026All holders in Q1 2026
| Measure | Q1 2026 | Of which not filed for Q2 2026 | Q2 2026 | Change |
|---|---|---|---|---|
| Holders | 188 | 3 | 184 | −1 |
| Shares | 37.8M | 60.0K | 38.8M | +1.11M (+2.9%) |
| Value | $761.2M | $1.21M | $903.3M | +$143.3M (+18.9%) |
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (19)
Institutions that held Old Second Bancorp Inc at the end of Q2 2026 but not at the end of Q1 2026.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Congress Asset Management Co | 338,650 | $7.90M | 0.05% |
| D. E. Shaw & Co., Inc. | 114,326 | $2.67M | 0.00% |
| ExodusPoint Capital Management, LP | 53,769 | $1.25M | 0.01% |
| Aquatic Capital Management LLC | 37,700 | $879.2K | 0.03% |
| Gsa Capital Partners LLP | 34,819 | $812.0K | 0.05% |
| Sanctuary Advisors, LLC | 33,909 | $790.8K | 0.00% |
| Jupiter Topco LLC | 26,232 | $612.4K | 0.00% |
| Virtu Financial LLC | 11,758 | $274.0K | 0.01% |
| Voya Investment Management LLC | 10,636 | $248.0K | 0.00% |
| J.W. Cole Advisors, Inc. | 10,509 | $245.1K | 0.00% |
| RSM US Wealth Management LLC | 9,099 | $212.2K | 0.00% |
| VERITY Wealth Advisors | 8,815 | $205.6K | 0.12% |
| GWM Advisors LLC | 8,660 | $202.0K | 0.00% |
| Huntington National Bank | 288 | $6.72K | 0.00% |
| Clearstead Advisors, LLC | 211 | $4.92K | 0.00% |
| Fortitude Family Office, LLC | 155 | $3.62K | 0.00% |
| UMA Financial Services, Inc. | 15 | $350 | 0.00% |
| Zions Bancorporation, National Association | 5 | $117 | 0.00% |
| SJS Investment Consulting Inc. | 5 | $117 | 0.00% |
Sold out (20)
Institutions that held Old Second Bancorp Inc at the end of Q1 2026 and filed for Q2 2026 without it.
| Institution | Shares, Q1 2026 | Value, Q1 2026 |
|---|---|---|
| Jacobs Asset Management, LLC | 150,000 | $3.02M |
| Jane Street Group, LLC | 51,428 | $1.04M |
| CI Private Wealth, LLC | 41,087 | $825.4K |
| Susquehanna International Group, LLP | 38,533 | $776.8K |
| Gamco Investors, Inc. Et Al | 32,721 | $659.7K |
| Millennium Management LLC | 31,475 | $634.5K |
| Atom Investors LP | 26,934 | $543.0K |
| nVerses Capital, LLC | 21,243 | $428.3K |
| Assenagon Asset Management S.A. | 17,860 | $360.1K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 15,821 | $319.0K |
| Amundi | 13,706 | $276.3K |
| CenterBook Partners LP | 13,425 | $270.6K |
| Abacus Wealth Partners, LLC | 11,590 | $233.7K |
| DRW Securities, LLC | 11,467 | $231.2K |
| XTX Topco Ltd | 10,590 | $213.5K |
| Quadrant Capital Group LLC | 2,523 | $50.9K |
| MAI Capital Management | 1,491 | $30.1K |
| Eastern Bank | 758 | $15.3K |
| Root Financial Partners, LLC | 106 | $2.14K |
| National Bank of Canada | 3 | $60 |
Not filed for Q2 2026 yet (3)
Institutions that held Old Second Bancorp Inc at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q1 2026 | Value, Q1 2026 |
|---|---|---|
| Janus Henderson Group PLC | 26,232 | $529.0K |
| CWM, LLC | 23,515 | $474.1K |
| Skopos Labs, Inc. | 10,216 | $206.0K |