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.
13F holders, Q2 2026
Institutional positions in Old Second Bancorp Inc as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 184
- −1 vs. Q1 2026
- Shares held
- 38.8M
- +1.11M (+2.9%) vs. Q1 2026
- Total value
- $903.3M
- +$143.3M (+18.9%) vs. Q1 2026
- New holders
- 19
- 78 more added
- Sold out
- 20
- 47 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting OSBC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 184 | $903.3M |
| Q1 2026 | 188 | $761.2M |
| Q4 2025 | 185 | $723.9M |
| Q3 2025 | 197 | $624.4M |
| Q2 2025 | 183 | $579.1M |
| Q1 2025 | 192 | $546.2M |
| Q4 2024 | 180 | $573.9M |
| Q3 2024 | 175 | $495.0M |
| Q2 2024 | 153 | $457.4M |
| Q1 2024 | 151 | $415.0M |
| Q4 2023 | 160 | $470.4M |
| Q3 2023 | 145 | $406.8M |
| Q2 2023 | 134 | $385.5M |
| Q1 2023 | 155 | $415.0M |
| Q4 2022 | 145 | $471.2M |
| Q3 2022 | 133 | $384.5M |
| Q2 2022 | 135 | $395.2M |
| Q1 2022 | 136 | $403.8M |
| Q4 2021 | 129 | $281.7M |
| Q3 2021 | 113 | $266.1M |
| Q2 2021 | 115 | $253.5M |
| Q1 2021 | 101 | $271.1M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Old Second Bancorp Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Asset Management, Ltd | 38,777 | $904.3K | 0.00% | +8,318+27.3% | Added |
| FMR LLC | 39,922 | $931.0K | 0.00% | +34,080+583.4% | Added |
| Legal & General Group Plc | 40,578 | $946.3K | 0.00% | +471+1.2% | Added |
| Wells Fargo & Company | 42,857 | $999.4K | 0.00% | +23,035+116.2% | Added |
| HighTower Advisors, LLC | 43,563 | $1.02M | 0.00% | −289−0.7% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 45,547 | $1.04M | 0.00% | +2,763+6.5% | Added |
| Price T Rowe Associates Inc | 46,957 | $1.10M | 0.00% | +5,494+13.3% | Added |
| Ieq Capital, LLC | 50,309 | $1.17M | 0.01% | −2,198−4.2% | Reduced |
| Susquehanna Fundamental Investments, LLC | 50,693 | $1.18M | 0.02% | +34,268+208.6% | Added |
| Deutsche Bank AG | 51,034 | $1.19M | 0.00% | +4,557+9.8% | Added |
| California State Teachers Retirement System | 51,243 | $1.19M | 0.00% | +4,447+9.5% | Added |
| ExodusPoint Capital Management, LP | 53,769 | $1.25M | 0.01% | +53,769 | New |
| Creative Planning | 53,848 | $1.26M | 0.00% | +6,899+14.7% | Added |
| Campbell & CO Investment Adviser LLC | 54,037 | $1.26M | 0.07% | +18,593+52.5% | Added |
| Citigroup Inc | 55,100 | $1.28M | 0.00% | +17,869+48.0% | Added |
| Knights of Columbus Asset Advisors LLC | 57,364 | $1.34M | 0.07% | −74,077−56.4% | Reduced |
| HGK Asset Management Inc | 60,706 | $1.42M | 0.19% | +28,624+89.2% | Added |
| Sara-Bay Financial | 61,000 | $1.42M | 0.38% | −33,063−35.1% | Reduced |
| Martingale Asset Management L P | 61,224 | $1.43M | 0.03% | −26,000−29.8% | Reduced |
| Bank of Montreal | 64,272 | $1.50M | 0.00% | −54,193−45.7% | Reduced |
| HSBC Holdings PLC | 66,312 | $1.54M | 0.00% | −18,871−22.2% | Reduced |
| Rhumbline Advisers | 69,998 | $1.63M | 0.00% | +3,903+5.9% | Added |
| Quantinno Capital Management LP | 73,556 | $1.72M | 0.00% | +23,677+47.5% | Added |
| JCSD Capital, LLC | 74,100 | $1.73M | 2.57% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 76,132 | $1.78M | 0.00% | +8,602+12.7% | Added |
| Invesco Ltd. | 77,241 | $1.80M | 0.00% | −4,371−5.4% | Reduced |
| Principal Financial Group Inc | 80,534 | $1.88M | 0.00% | +5,444+7.2% | Added |
| MSH Capital Advisors LLC | 84,826 | $1.98M | 0.34% | 00.0% | Unchanged |
| Barclays PLC | 87,603 | $2.04M | 0.00% | +601+0.7% | Added |
| State of New Jersey Common Pension Fund D | 88,964 | $2.07M | 0.01% | −40,415−31.2% | Reduced |
| First Trust Advisors LP | 94,347 | $2.20M | 0.00% | +75,587+402.9% | Added |
| Fisher Asset Management, LLC | 97,285 | $2.27M | 0.00% | 00.0% | Unchanged |
| Mendon Capital Advisors Corp | 100,000 | $2.33M | 0.82% | 00.0% | Unchanged |
| Swiss National Bank | 100,400 | $2.34M | 0.00% | +1,700+1.7% | Added |
| RMB Capital Management, LLC | 100,505 | $2.34M | 0.04% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 114,326 | $2.67M | 0.00% | +114,326 | New |
| SEI Investments Co | 117,666 | $2.74M | 0.00% | −85,422−42.1% | Reduced |
| Elizabeth Park Capital Advisors, Ltd. | 129,457 | $3.02M | 2.09% | −37,000−22.2% | Reduced |
| Russell Investments Group, Ltd. | 135,010 | $3.15M | 0.00% | +23,061+20.6% | Added |
| Victory Capital Management Inc | 141,914 | $3.31M | 0.00% | +2,860+2.1% | Added |
| UBS Group AG | 147,223 | $3.43M | 0.00% | −112,051−43.2% | Reduced |
| EJF Capital LLC | 151,358 | $3.53M | 2.36% | +188+0.1% | Added |
| Siena Capital Partners GP, LLC | 163,038 | $3.81M | 0.92% | 00.0% | Unchanged |
| Blair William & Co | 163,228 | $3.81M | 0.01% | +345+0.2% | Added |
| Squarepoint Ops LLC | 167,884 | $3.92M | 0.01% | −2,767−1.6% | Reduced |
| Two Sigma Investments, LP | 200,819 | $4.68M | 0.00% | +133,462+198.1% | Added |
| Great Lakes Advisors, LLC | 203,909 | $4.76M | 0.04% | +5,905+3.0% | Added |
| Forum Financial Management, LP | 205,673 | $4.80M | 0.06% | +120.0% | Added |
| Arrowstreet Capital, Limited Partnership | 210,745 | $4.91M | 0.00% | +69,719+49.4% | Added |
| Mariner, LLC | 225,303 | $5.25M | 0.01% | +207,236+1,147.0% | Added |
| Thrivent Financial for Lutherans | 242,278 | $5.65M | 0.01% | +99,159+69.3% | Added |
| Empowered Funds, LLC | 248,627 | $5.80M | 0.03% | +15,068+6.5% | Added |
| Franklin Resources Inc | 259,324 | $6.05M | 0.00% | +171,158+194.1% | Added |
| Citadel Advisors LLC | 304,021 | $7.09M | 0.00% | +243,956+406.2% | Added |
| Morgan Stanley | 318,318 | $7.42M | 0.00% | +39,931+14.3% | Added |
| Congress Asset Management Co | 338,650 | $7.90M | 0.05% | +338,650 | New |
| Vanguard Fiduciary Trust Co | 341,200 | $7.96M | 0.00% | +5,717+1.7% | Added |
| Bank of New York Mellon Corp | 342,013 | $7.98M | 0.00% | +4,749+1.4% | Added |
| Gator Capital Management, LLC | 359,730 | $8.39M | 1.81% | +8,250+2.3% | Added |
| Bank of America Corp | 372,648 | $8.69M | 0.00% | +41,318+12.5% | Added |
| AQR Capital Management LLC | 386,234 | $9.01M | 0.00% | −5,726−1.5% | Reduced |
| Charles Schwab Investment Management Inc | 431,304 | $10.1M | 0.00% | +394+0.1% | Added |
| Bridgeway Capital Management, LLC | 453,323 | $10.6M | 0.19% | +15,068+3.4% | Added |
| Nuveen, LLC | 492,162 | $11.5M | 0.00% | +72,520+17.3% | Added |
| Wellington Management Group LLP | 544,345 | $12.7M | 0.00% | −313,440−36.5% | Reduced |
| JPMorgan Chase & Co | 555,602 | $12.9M | 0.00% | −145,351−20.7% | Reduced |
| Alliancebernstein L.P. | 641,845 | $12.9M | 0.00% | −49,000−7.1% | Reduced |
| Northern Trust Corp | 555,408 | $13.0M | 0.00% | −208,933−27.3% | Reduced |
| River Street Advisors LLC | 779,008 | $18.2M | 5.35% | +32,348+4.3% | Added |
| Stieven Capital Advisors, L.P. | 815,328 | $19.0M | 3.63% | +41,800+5.4% | Added |
| Vanguard Portfolio Management LLC | 819,368 | $19.1M | 0.00% | +106,935+15.0% | Added |
| Manufacturers Life Insurance Company, The | 872,651 | $20.4M | 0.02% | −6,019−0.7% | Reduced |
| Banc Funds Co LLC | 1,034,143 | $24.1M | 3.98% | +5,000+0.5% | Added |
| Kennedy Capital Management, Inc. | 1,236,983 | $28.8M | 0.51% | −31,507−2.5% | Reduced |
| Geode Capital Management, LLC | 1,349,432 | $31.5M | 0.00% | +67,421+5.3% | Added |
| Boston Partners | 1,415,165 | $32.9M | 0.03% | −28,724−2.0% | Reduced |
| FJ Capital Management LLC | 1,460,413 | $34.1M | 4.42% | −44,689−3.0% | Reduced |
| Goldman Sachs Group Inc | 1,624,852 | $37.9M | 0.00% | −66,671−3.9% | Reduced |
| American Century Companies Inc | 1,783,820 | $41.6M | 0.02% | +192,877+12.1% | Added |
| Davis Asset Management, L.P. | 1,800,000 | $42.0M | 1.06% | 00.0% | Unchanged |
| State Street Corp | 1,839,202 | $42.9M | 0.00% | +239,900+15.0% | Added |
| Vanguard Capital Management LLC | 2,179,877 | $50.8M | 0.00% | −71,972−3.2% | Reduced |
| Dimensional Fund Advisors LP | 2,498,671 | $58.3M | 0.01% | +109,809+4.6% | Added |
| BlackRock, Inc. | 4,298,683 | $100.2M | 0.00% | +172,439+4.2% | Added |
| Jacobs Asset Management, LLC | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −51,428−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −41,087−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −38,533−100.0% | Sold out |
| Gamco Investors, Inc. Et Al | 0 | $0 | 0.00% | −32,721−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −31,475−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −26,934−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | −21,243−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −17,860−100.0% | Sold out |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0 | $0 | 0.00% | −15,821−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −13,706−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −13,425−100.0% | Sold out |
| Abacus Wealth Partners, LLC | 0 | $0 | 0.00% | −11,590−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −11,467−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −10,590−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −2,523−100.0% | Sold out |