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, Q3 2025
Institutional positions in Old Second Bancorp Inc as of Sep 30, 2025. 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
- 197
- +16 vs. Q2 2025
- Shares held
- 36.1M
- +3.50M (+10.7%) vs. Q2 2025
- Total value
- $624.4M
- +$45.5M (+7.9%) vs. Q2 2025
- New holders
- 32
- 84 more added
- Sold out
- 16
- 50 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Old Second Bancorp Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,817,778 | $66.0M | 0.00% | +316,180+9.0% | Added |
| Vanguard Group Inc | 3,269,993 | $56.5M | 0.00% | +553,169+20.4% | Added |
| Dimensional Fund Advisors LP | 2,204,884 | $38.1M | 0.01% | +86,416+4.1% | Added |
| FJ Capital Management LLC | 1,919,934 | $33.2M | 3.57% | +82,601+4.5% | Added |
| Goldman Sachs Group Inc | 1,558,706 | $26.9M | 0.00% | +163,374+11.7% | Added |
| Davis Asset Management, L.P. | 1,500,000 | $25.9M | 0.92% | +115,498+8.3% | Added |
| American Century Companies Inc | 1,387,891 | $24.0M | 0.01% | +160,429+13.1% | Added |
| State Street Corp | 1,367,478 | $23.6M | 0.00% | +61,936+4.7% | Added |
| Geode Capital Management, LLC | 1,363,185 | $23.6M | 0.00% | +211,814+18.4% | Added |
| Kennedy Capital Management, Inc. | 1,093,318 | $18.9M | 0.42% | +96,326+9.7% | Added |
| Banc Funds Co LLC | 1,006,378 | $17.4M | 3.04% | −151,000−13.0% | Reduced |
| Northern Trust Corp | 997,898 | $17.2M | 0.00% | +583,491+140.8% | Added |
| Manufacturers Life Insurance Company, The | 916,668 | $15.8M | 0.01% | −17,805−1.9% | Reduced |
| JPMorgan Chase & Co | 780,001 | $13.5M | 0.00% | −69,867−8.2% | Reduced |
| Stieven Capital Advisors, L.P. | 778,028 | $13.4M | 2.54% | +61,000+8.5% | Added |
| Alliancebernstein L.P. | 699,270 | $12.1M | 0.00% | −14,472−2.0% | Reduced |
| AQR Capital Management LLC | 518,099 | $8.96M | 0.01% | −2,827−0.5% | Reduced |
| Bridgeway Capital Management, LLC | 504,951 | $8.73M | 0.19% | +20,423+4.2% | Added |
| Jacobs Asset Management, LLC | 478,217 | $8.27M | 4.52% | +15,717+3.4% | Added |
| Charles Schwab Investment Management Inc | 437,591 | $7.56M | 0.00% | +71,038+19.4% | Added |
| Nuveen, LLC | 414,668 | $7.17M | 0.00% | +31,620+8.3% | Added |
| River Street Advisors LLC | 383,949 | $6.64M | 2.57% | +383,949 | New |
| Bank of America Corp | 354,401 | $6.13M | 0.00% | +155,952+78.6% | Added |
| Bank of New York Mellon Corp | 340,877 | $5.89M | 0.00% | +11,441+3.5% | Added |
| Gator Capital Management, LLC | 335,335 | $5.80M | 1.49% | +2,385+0.7% | Added |
| Morgan Stanley | 309,897 | $5.36M | 0.00% | −35,112−10.2% | Reduced |
| Qube Research & Technologies Ltd | 265,314 | $4.59M | 0.01% | −30,786−10.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 216,895 | $3.75M | 0.00% | +3,659+1.7% | Added |
| Forum Financial Management, LP | 215,371 | $3.72M | 0.05% | −14,516−6.3% | Reduced |
| Empowered Funds, LLC | 198,548 | $3.43M | 0.03% | +20,423+11.5% | Added |
| LSV Asset Management | 193,426 | $3.34M | 0.01% | −9,700−4.8% | Reduced |
| Two Sigma Investments, LP | 187,791 | $3.25M | 0.00% | +66,340+54.6% | Added |
| Bank of Montreal | 179,350 | $3.10M | 0.00% | +179,350 | New |
| EJF Capital LLC | 173,834 | $3.00M | 1.75% | +30,548+21.3% | Added |
| Thrivent Financial for Lutherans | 173,669 | $3.00M | 0.01% | −16,251−8.6% | Reduced |
| Great Lakes Advisors, LLC | 167,385 | $2.89M | 0.02% | −25,077−13.0% | Reduced |
| Siena Capital Partners GP, LLC | 163,038 | $2.82M | 0.81% | 00.0% | Unchanged |
| Victory Capital Management Inc | 162,310 | $2.81M | 0.00% | +40,402+33.1% | Added |
| Elizabeth Park Capital Advisors, Ltd. | 158,657 | $2.74M | 2.22% | +7,358+4.9% | Added |
| Wellington Management Group LLP | 156,108 | $2.70M | 0.00% | 00.0% | Unchanged |
| Blair William & Co | 154,436 | $2.67M | 0.01% | +136,416+757.0% | Added |
| Knights of Columbus Asset Advisors LLC | 136,442 | $2.36M | 0.14% | +4,487+3.4% | Added |
| Martingale Asset Management L P | 135,240 | $2.34M | 0.06% | +3,248+2.5% | Added |
| Boothbay Fund Management, LLC | 125,249 | $2.16M | 0.06% | +125,249 | New |
| State of New Jersey Common Pension Fund D | 120,925 | $2.09M | 0.01% | +6,915+6.1% | Added |
| Barclays PLC | 116,579 | $2.02M | 0.00% | −16,898−12.7% | Reduced |
| Russell Investments Group, Ltd. | 111,213 | $1.92M | 0.00% | +4,505+4.2% | Added |
| Fisher Asset Management, LLC | 102,505 | $1.77M | 0.00% | −5,518−5.1% | Reduced |
| RMB Capital Management, LLC | 100,496 | $1.74M | 0.03% | 00.0% | Unchanged |
| Mendon Capital Advisors Corp | 100,000 | $1.73M | 0.79% | 00.0% | Unchanged |
| Sara-Bay Financial | 99,063 | $1.71M | 0.48% | +99,063 | New |
| Brandywine Global Investment Management, LLC | 94,020 | $1.63M | 0.01% | −3,500−3.6% | Reduced |
| MSH Capital Advisors LLC | 84,826 | $1.47M | 0.39% | 00.0% | Unchanged |
| Swiss National Bank | 81,700 | $1.41M | 0.00% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 79,032 | $1.37M | 0.00% | −27,095−25.5% | Reduced |
| Citadel Advisors LLC | 77,588 | $1.34M | 0.00% | +25,833+49.9% | Added |
| Invesco Ltd. | 77,001 | $1.33M | 0.00% | +6,662+9.5% | Added |
| Rhumbline Advisers | 75,349 | $1.30M | 0.00% | +4,256+6.0% | Added |
| JCSD Capital, LLC | 75,100 | $1.30M | 2.31% | +75,100 | New |
| HGK Asset Management Inc | 61,653 | $1.07M | 0.17% | +979+1.6% | Added |
| State Board of Administration of Florida Retirement System | 58,816 | $1.02M | 0.00% | 00.0% | Unchanged |
| PMC FIG Opportunities LLC | 56,569 | $977.8K | 1.50% | +56,569 | New |
| SEI Investments Co | 55,126 | $952.9K | 0.00% | +1,470+2.7% | Added |
| Ieq Capital, LLC | 53,274 | $920.8K | 0.00% | +22,495+73.1% | Added |
| Black Maple Capital Management LP | 52,500 | $907.5K | 0.66% | +5,000+10.5% | Added |
| UBS Asset Management Americas Inc | 52,022 | $899.2K | 0.00% | −75,919−59.3% | Reduced |
| Renaissance Technologies LLC | 49,125 | $849.1K | 0.00% | −33,600−40.6% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 48,615 | $838.6K | 0.00% | −10,157−17.3% | Reduced |
| Bailard, Inc. | 47,750 | $825.4K | 0.02% | +9,600+25.2% | Added |
| Point72 Asset Management, L.P. | 47,672 | $824.0K | 0.00% | +28,335+146.5% | Added |
| Legal & General Group Plc | 47,570 | $822.2K | 0.00% | +487+1.0% | Added |
| ExodusPoint Capital Management, LP | 47,538 | $821.7K | 0.01% | −12,867−21.3% | Reduced |
| Hunter Perkins Capital Management, LLC | 45,820 | $792.0K | 0.18% | 00.0% | Unchanged |
| CenterBook Partners LP | 45,797 | $791.6K | 0.04% | +45,797 | New |
| UBS Group AG | 44,812 | $774.6K | 0.00% | +7,541+20.2% | Added |
| HighTower Advisors, LLC | 44,728 | $773.1K | 0.00% | +422+1.0% | Added |
| Two Sigma Advisers, LP | 44,500 | $769.2K | 0.00% | −32,800−42.4% | Reduced |
| Skylands Capital, LLC | 43,350 | $749.5K | 0.10% | +19,250+79.9% | Added |
| Dynamic Technology Lab Private Ltd | 41,951 | $725.0K | 0.12% | +41,951 | New |
| CI Private Wealth, LLC | 40,753 | $704.4K | 0.00% | +40,753 | New |
| Teacher Retirement System of Texas | 40,588 | $701.6K | 0.00% | −990−2.4% | Reduced |
| California State Teachers Retirement System | 39,417 | $681.3K | 0.00% | +20.0% | Added |
| Citigroup Inc | 38,893 | $672.3K | 0.00% | −5,966−13.3% | Reduced |
| Quest Partners LLC | 38,771 | $670.2K | 0.04% | −4,217−9.8% | Reduced |
| Wells Fargo & Company | 38,670 | $668.4K | 0.00% | +10,727+38.4% | Added |
| Creative Planning | 38,306 | $662.1K | 0.00% | +4,618+13.7% | Added |
| Deutsche Bank AG | 37,834 | $654.1K | 0.00% | +6,741+21.7% | Added |
| Rafferty Asset Management, LLC | 36,771 | $635.6K | 0.00% | +3,995+12.2% | Added |
| Pinnacle Financial Group, LLC | 36,414 | $629.4K | 0.19% | +36,414 | New |
| Principal Financial Group Inc | 34,962 | $604.3K | 0.00% | −4,608−11.6% | Reduced |
| Quantbot Technologies LP | 34,512 | $596.5K | 0.02% | +23,668+218.3% | Added |
| HSBC Holdings PLC | 34,063 | $585.2K | 0.00% | +2,314+7.3% | Added |
| 4WEALTH Advisors, Inc. | 33,558 | $580.0K | 0.54% | +33,558 | New |
| Gamco Investors, Inc. Et Al | 32,721 | $565.6K | 0.01% | +32,721 | New |
| Envestnet Asset Management Inc | 32,695 | $565.1K | 0.00% | −589−1.8% | Reduced |
| Royal Bank of Canada | 32,413 | $560.0K | 0.00% | −17,163−34.6% | Reduced |
| Price T Rowe Associates Inc | 32,243 | $558.0K | 0.00% | +4,900+17.9% | Added |
| MQS Management LLC | 31,654 | $547.1K | 0.32% | +31,654 | New |
| R Squared Ltd | 30,899 | $534.1K | 0.23% | +6,598+27.2% | Added |
| Prudential Financial Inc | 29,910 | $516.8K | 0.00% | +580+2.0% | Added |