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, Q4 2025
Institutional positions in Old Second Bancorp Inc as of Dec 31, 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
- 185
- −8 vs. Q3 2025
- Shares held
- 37.1M
- +1.03M (+2.8%) vs. Q3 2025
- Total value
- $723.9M
- +$100.0M (+16.0%) vs. Q3 2025
- New holders
- 22
- 78 more added
- Sold out
- 30
- 59 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Old Second Bancorp Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Quantinno Capital Management LP | 31,418 | $612.7K | 0.00% | +7,315+30.3% | Added |
| Two Sigma Investments, LP | 32,599 | $635.7K | 0.00% | −155,192−82.6% | Reduced |
| Gamco Investors, Inc. Et Al | 32,721 | $638.1K | 0.01% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 34,262 | $669.0K | 0.00% | +2,019+6.3% | Added |
| Royal Bank of Canada | 34,831 | $679.0K | 0.00% | +2,418+7.5% | Added |
| CI Private Wealth, LLC | 40,933 | $798.2K | 0.00% | +180+0.4% | Added |
| Deutsche Bank AG | 41,187 | $803.1K | 0.00% | +3,353+8.9% | Added |
| Rafferty Asset Management, LLC | 43,049 | $839.5K | 0.00% | +6,278+17.1% | Added |
| HighTower Advisors, LLC | 44,002 | $858.0K | 0.00% | −726−1.6% | Reduced |
| Citigroup Inc | 45,424 | $885.8K | 0.00% | +6,531+16.8% | Added |
| Hunter Perkins Capital Management, LLC | 45,820 | $893.0K | 0.21% | 00.0% | Unchanged |
| California State Teachers Retirement System | 47,172 | $919.9K | 0.00% | +7,755+19.7% | Added |
| Creative Planning | 47,209 | $920.6K | 0.00% | +8,903+23.2% | Added |
| Squarepoint Ops LLC | 48,472 | $945.2K | 0.00% | +38,117+368.1% | Added |
| Black Maple Capital Management LP | 49,000 | $955.5K | 0.71% | −3,500−6.7% | Reduced |
| Principal Financial Group Inc | 49,782 | $970.8K | 0.00% | +14,820+42.4% | Added |
| Legal & General Group Plc | 50,624 | $987.2K | 0.00% | +3,054+6.4% | Added |
| Ameriprise Financial Inc | 50,629 | $987.3K | 0.00% | −28,403−35.9% | Reduced |
| Raymond James Financial Inc | 55,133 | $1.08M | 0.00% | +33,744+157.8% | Added |
| Wells Fargo & Company | 56,544 | $1.10M | 0.00% | +17,874+46.2% | Added |
| Ieq Capital, LLC | 57,265 | $1.12M | 0.00% | +3,991+7.5% | Added |
| HGK Asset Management Inc | 58,241 | $1.14M | 0.17% | −3,412−5.5% | Reduced |
| State Board of Administration of Florida Retirement System | 58,816 | $1.15M | 0.00% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 64,157 | $1.25M | 0.00% | −201,157−75.8% | Reduced |
| UBS Asset Management Americas Inc | 64,739 | $1.26M | 0.00% | +12,717+24.4% | Added |
| Rhumbline Advisers | 66,974 | $1.31M | 0.00% | −8,375−11.1% | Reduced |
| Citadel Advisors LLC | 67,313 | $1.31M | 0.00% | −10,275−13.2% | Reduced |
| JCSD Capital, LLC | 74,100 | $1.44M | 2.00% | −1,000−1.3% | Reduced |
| HSBC Holdings PLC | 80,105 | $1.56M | 0.00% | +46,042+135.2% | Added |
| Invesco Ltd. | 80,545 | $1.57M | 0.00% | +3,544+4.6% | Added |
| MSH Capital Advisors LLC | 84,826 | $1.65M | 0.35% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 86,325 | $1.68M | 0.00% | +37,200+75.7% | Added |
| Brandywine Global Investment Management, LLC | 90,620 | $1.77M | 0.01% | −3,400−3.6% | Reduced |
| Fisher Asset Management, LLC | 97,285 | $1.90M | 0.00% | −5,220−5.1% | Reduced |
| Swiss National Bank | 98,700 | $1.92M | 0.00% | +17,000+20.8% | Added |
| Sara-Bay Financial | 99,063 | $1.93M | 0.58% | 00.0% | Unchanged |
| Mendon Capital Advisors Corp | 100,000 | $1.95M | 0.76% | 00.0% | Unchanged |
| RMB Capital Management, LLC | 100,505 | $1.96M | 0.03% | +90.0% | Added |
| Martingale Asset Management L P | 110,468 | $2.15M | 0.05% | −24,772−18.3% | Reduced |
| Russell Investments Group, Ltd. | 112,121 | $2.19M | 0.00% | +908+0.8% | Added |
| SEI Investments Co | 117,031 | $2.28M | 0.00% | +61,905+112.3% | Added |
| State of New Jersey Common Pension Fund D | 129,379 | $2.52M | 0.01% | +8,454+7.0% | Added |
| Knights of Columbus Asset Advisors LLC | 132,945 | $2.59M | 0.15% | −3,497−2.6% | Reduced |
| Bank of Montreal | 139,252 | $2.72M | 0.00% | −40,098−22.4% | Reduced |
| Thrivent Financial for Lutherans | 143,119 | $2.79M | 0.00% | −30,550−17.6% | Reduced |
| Barclays PLC | 143,188 | $2.79M | 0.00% | +26,609+22.8% | Added |
| EJF Capital LLC | 149,076 | $2.91M | 1.65% | −24,758−14.2% | Reduced |
| Blair William & Co | 154,219 | $3.01M | 0.01% | −217−0.1% | Reduced |
| Victory Capital Management Inc | 154,715 | $3.02M | 0.00% | −7,595−4.7% | Reduced |
| Elizabeth Park Capital Advisors, Ltd. | 158,657 | $3.09M | 2.55% | 00.0% | Unchanged |
| Siena Capital Partners GP, LLC | 163,038 | $3.18M | 0.85% | 00.0% | Unchanged |
| Great Lakes Advisors, LLC | 167,385 | $3.26M | 0.03% | 00.0% | Unchanged |
| UBS Group AG | 177,102 | $3.45M | 0.00% | +132,290+295.2% | Added |
| Forum Financial Management, LP | 208,884 | $4.07M | 0.05% | −6,487−3.0% | Reduced |
| Arrowstreet Capital, Limited Partnership | 216,511 | $4.22M | 0.00% | −384−0.2% | Reduced |
| Adage Capital Partners GP, L.L.C. | 243,192 | $4.74M | 0.01% | +243,192 | New |
| Jacobs Asset Management, LLC | 281,477 | $5.49M | 3.06% | −196,740−41.1% | Reduced |
| Morgan Stanley | 288,122 | $5.62M | 0.00% | −21,775−7.0% | Reduced |
| Millennium Management LLC | 313,560 | $6.11M | 0.00% | +313,560 | New |
| Gator Capital Management, LLC | 337,995 | $6.59M | 1.36% | +2,660+0.8% | Added |
| Bank of America Corp | 342,579 | $6.68M | 0.00% | −11,822−3.3% | Reduced |
| Bank of New York Mellon Corp | 344,292 | $6.71M | 0.00% | +3,415+1.0% | Added |
| River Street Advisors LLC | 366,071 | $7.14M | 2.67% | −17,878−4.7% | Reduced |
| Nuveen, LLC | 415,470 | $8.10M | 0.00% | +802+0.2% | Added |
| Bridgeway Capital Management, LLC | 427,617 | $8.34M | 0.17% | −77,334−15.3% | Reduced |
| Charles Schwab Investment Management Inc | 437,510 | $8.53M | 0.00% | −810.0% | Reduced |
| AQR Capital Management LLC | 447,118 | $8.72M | 0.00% | −70,981−13.7% | Reduced |
| Alliancebernstein L.P. | 686,032 | $13.4M | 0.00% | −13,238−1.9% | Reduced |
| Stieven Capital Advisors, L.P. | 776,128 | $15.1M | 2.81% | −1,900−0.2% | Reduced |
| Boston Partners | 817,311 | $16.0M | 0.02% | +817,311 | New |
| JPMorgan Chase & Co | 858,806 | $16.7M | 0.00% | +78,805+10.1% | Added |
| Northern Trust Corp | 881,576 | $17.2M | 0.00% | −116,322−11.7% | Reduced |
| Manufacturers Life Insurance Company, The | 891,878 | $17.4M | 0.01% | −24,790−2.7% | Reduced |
| Banc Funds Co LLC | 905,190 | $17.7M | 3.49% | −101,188−10.1% | Reduced |
| Wellington Management Group LLP | 969,708 | $18.9M | 0.00% | +813,600+521.2% | Added |
| Goldman Sachs Group Inc | 1,263,223 | $24.6M | 0.00% | −295,483−19.0% | Reduced |
| Kennedy Capital Management, Inc. | 1,267,042 | $24.7M | 0.52% | +173,724+15.9% | Added |
| Geode Capital Management, LLC | 1,365,448 | $26.6M | 0.00% | +2,263+0.2% | Added |
| American Century Companies Inc | 1,470,185 | $28.7M | 0.01% | +82,294+5.9% | Added |
| State Street Corp | 1,539,419 | $30.0M | 0.00% | +171,941+12.6% | Added |
| Davis Asset Management, L.P. | 1,745,523 | $34.0M | 1.22% | +245,523+16.4% | Added |
| FJ Capital Management LLC | 1,829,665 | $35.7M | 3.94% | −90,269−4.7% | Reduced |
| Dimensional Fund Advisors LP | 2,260,874 | $44.1M | 0.01% | +55,990+2.5% | Added |
| Vanguard Group Inc | 3,278,388 | $63.9M | 0.00% | +8,395+0.3% | Added |
| BlackRock, Inc. | 4,155,906 | $81.0M | 0.00% | +338,128+8.9% | Added |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −198,548−100.0% | Sold out |
| LSV Asset Management | 0 | $0 | 0.00% | −193,426−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −125,249−100.0% | Sold out |
| PMC FIG Opportunities LLC | 0 | $0 | 0.00% | −56,569−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −47,750−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −47,672−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −47,538−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −44,500−100.0% | Sold out |
| Skylands Capital, LLC | 0 | $0 | 0.00% | −43,350−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −41,951−100.0% | Sold out |
| Pinnacle Financial Group, LLC | 0 | $0 | 0.00% | −36,414−100.0% | Sold out |
| MQS Management LLC | 0 | $0 | 0.00% | −31,654−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −30,899−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −29,910−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −28,116−100.0% | Sold out |