Old Second BancorpOSBC
13F holders, Q3 2025 (September 30)197holders +14
31new positions
16sold out
8famous investors
$17.29avg. 13F price*
At the end of Q3 2025, 197 institutions reported holding Old Second Bancorp Inc. (OSBC) in their 13F filings, up 14 from Q2 2025. 31 opened new positions and 16 sold out. The largest holders were BlackRock, Inc. ($66.0M), Vanguard Group Inc. ($56.5M) and Dimensional Fund Advisors LP ($38.1M). 8 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio), Mario Gabelli (0.0% of GAMCO Investors's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Old Second Bancorp Inc.
- CUSIP
- 680277100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 31 | $23.2M |
| Exits | 16 | $6.2M |
All 13F filers, Q2 2025 → Q3 2025: 4,734,822 shares bought and 1,238,628 shares sold, net +3,496,194 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 197 holders
| BlackRock, Inc. | 0.00% | Add +9.0% | 3,817,778 | $66.0M |
| Vanguard Group Inc. | 0.00% | Add +20.4% | 3,269,993 | $56.5M |
| Dimensional Fund Advisors LP | 0.01% | Add +4.1% | 2,204,884 | $38.1M |
| FJ Capital Management LLC | 3.54% | Add +4.5% | 1,919,934 | $33.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +11.7% | 1,558,706 | $26.9M |
| Davis Asset Management, L.P. | 0.92% | Add +8.3% | 1,500,000 | $25.9M |
| American Century Companies Inc. | 0.01% | Add +13.1% | 1,387,891 | $24.0M |
| State Street Corp. | 0.00% | Add +4.7% | 1,367,478 | $23.6M |
| Geode Capital Management, LLC | 0.00% | Add +18.4% | 1,363,185 | $23.6M |
| Kennedy Capital Management LLC | 0.42% | Add +9.7% | 1,093,318 | $18.9M |
| Banc Funds Co. LLC | 3.04% | Reduce -13.1% | 1,006,378 | $17.4M |
| Northern Trust Corp. | 0.00% | Add +140.8% | 997,898 | $17.2M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -1.9% | 916,668 | $15.8M |
| JPMorgan Chase & Co. | 0.00% | Reduce -8.2% | 780,001 | $13.5M |
| Stieven Capital Advisors, L.P. | 2.54% | Add +8.5% | 778,028 | $13.4M |
| Alliancebernstein L.P. | 0.00% | Reduce -2.0% | 699,270 | $12.1M |
| AQR Capital Management | 0.01% | Reduce -0.5% | 518,099 | $9.0M |
| Bridgeway Capital Management, LLC | 0.19% | Add +4.2% | 504,951 | $8.7M |
| Jacobs Asset Management, LLC | 4.53% | Add +3.4% | 478,217 | $8.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +19.4% | 437,591 | $7.6M |
| Nuveen, LLC | 0.00% | Add +8.3% | 414,668 | $7.2M |
| River Street Advisors LLC | 2.57% | New | 383,949 | $6.6M |
| Bank of America Corp. | 0.00% | Add +78.6% | 354,401 | $6.1M |
| Bank of New York Mellon Corp | 0.00% | Add +3.5% | 340,877 | $5.9M |
| Gator Capital Management, LLC | 1.49% | Add +0.7% | 335,335 | $5.8M |
| Morgan Stanley | 0.00% | Reduce -10.2% | 309,897 | $5.4M |
| Qube Research & Technologies Ltd | 0.01% | Reduce -10.4% | 265,314 | $4.6M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +1.7% | 216,895 | $3.7M |
| Forum Financial Management, LP | 0.05% | Reduce -6.3% | 215,371 | $3.7M |
| Empowered Funds, LLC | 0.03% | Add +11.5% | 198,548 | $3.4M |
| LSV Asset Management | 0.01% | Reduce -4.8% | 193,426 | $3.3M |
| Two Sigma Investments, LP | 0.01% | Add +54.6% | 187,791 | $3.2M |
| Bank of Montreal | 0.00% | New | 179,350 | $3.1M |
| EJF Capital LP | 1.75% | Add +21.3% | 173,834 | $3.0M |
| Thrivent Financial for Lutherans | 0.01% | Reduce -8.6% | 173,669 | $3.0M |
| Great Lakes Advisors, LLC | 0.02% | Reduce -13.0% | 167,385 | $2.9M |
| Siena Capital Partners GP, LLC | 0.81% | No change | 163,038 | $2.8M |
| Victory Capital Management Inc. | 0.00% | Add +33.1% | 162,310 | $2.8M |
| Elizabeth Park Capital Advisors, Ltd. | 2.22% | Add +4.9% | 158,657 | $2.7M |
| Wellington Management Group LLP | 0.00% | No change | 156,108 | $2.7M |
| Blair William & Co. | 0.01% | Add +757.0% | 154,436 | $2.7M |
| Knights of Columbus Asset Advisors LLC | 0.14% | Add +3.4% | 136,442 | $2.4M |
| Martingale Asset Management L P | 0.06% | Add +2.5% | 135,240 | $2.3M |
| Boothbay Fund Management, LLC | 0.06% | New | 125,249 | $2.2M |
| State of New Jersey Common Pension Fund D | 0.01% | Add +6.1% | 120,925 | $2.1M |
| Barclays PLC | 0.00% | Reduce -12.7% | 116,579 | $2.0M |
| Russell Investments Group, Ltd. | 0.00% | Add +4.2% | 111,213 | $1.9M |
| Fisher Asset Management | 0.00% | Reduce -5.1% | 102,505 | $1.8M |
| Curi Capital, LLC | 0.03% | No change | 100,496 | $1.7M |
| Mendon Capital Advisors Corp. | 0.79% | No change | 100,000 | $1.7M |
| Sara-Bay Financial | 0.48% | New | 99,063 | $1.7M |
| Brandywine Global Investment Management, LLC | 0.01% | Reduce -3.6% | 94,020 | $1.6M |
| MSH Capital Advisors LLC | 0.39% | No change | 84,826 | $1.5M |
| Swiss National Bank | 0.00% | No change | 81,700 | $1.4M |
| Ameriprise Financial Inc. | 0.00% | Reduce -25.5% | 79,032 | $1.4M |
| Citadel Advisors | 0.00% | Add +49.9% | 77,588 | $1.3M |
| Invesco Ltd. | 0.00% | Add +9.5% | 77,001 | $1.3M |
| Rhumbline Advisers | 0.00% | Add +6.0% | 75,349 | $1.3M |
| JCSD Capital, LLC | 2.31% | New | 75,100 | $1.3M |
| Hudson Edge Investment Partners Inc. | 0.17% | Add +1.6% | 61,653 | $1.1M |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 58,816 | $1.0M |
| PMC FIG Opportunities LLC | 1.50% | New | 56,569 | $978K |
| Sei Investments Co. | 0.00% | Add +2.7% | 55,126 | $953K |
| Ieq Capital, LLC | 0.00% | Add +73.1% | 53,274 | $921K |
| Black Maple Capital Management LP | 0.66% | Add +10.5% | 52,500 | $907K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -59.3% | 52,022 | $899K |
| Renaissance Technologies | 0.00% | Reduce -40.6% | 49,125 | $849K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Reduce -17.3% | 48,615 | $839K |
| Bailard, Inc. | 0.02% | Add +25.2% | 47,750 | $825K |
| Point72 Asset Management | 0.00% | Add +146.5% | 47,672 | $824K |
| Legal & General Group Plc | 0.00% | Add +1.0% | 47,570 | $822K |
| ExodusPoint Capital Management, LP | 0.01% | Reduce -21.3% | 47,538 | $822K |
| Hunter Perkins Capital Management, LLC | 0.18% | No change | 45,820 | $792K |
| CenterBook Partners LP | 0.04% | New | 45,797 | $792K |
| UBS Group AG | 0.00% | Add +20.2% | 44,812 | $775K |
| HighTower Advisors, LLC | 0.00% | Add +0.9% | 44,728 | $773K |
| Two Sigma Advisers, LP | 0.00% | Reduce -42.4% | 44,500 | $769K |
| Skylands Capital, LLC | 0.10% | Add +79.9% | 43,350 | $750K |
| Dynamic Technology Lab Private Ltd | 0.12% | New | 41,951 | $725K |
| Corient Private Wealth LP | 0.00% | New | 40,753 | $704K |
| Teacher Retirement System of Texas | 0.00% | Reduce -2.4% | 40,588 | $702K |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 39,417 | $681K |
| Citigroup Inc. | 0.00% | Reduce -13.3% | 38,893 | $672K |
| AlphaQuest LLC | 0.04% | Reduce -9.8% | 38,771 | $670K |
| Wells Fargo & Company | 0.00% | Add +38.4% | 38,670 | $668K |
| Creative Planning | 0.00% | Add +13.7% | 38,306 | $662K |
| Deutsche Bank AG | 0.00% | Add +21.7% | 37,834 | $654K |
| Rafferty Asset Management, LLC | 0.00% | Add +12.2% | 36,771 | $636K |
| Pinnacle Financial Group, LLC / IL | 0.19% | New | 36,414 | $629K |
| Principal Financial Group Inc. | 0.00% | Reduce -11.7% | 34,962 | $604K |
| Quantbot Technologies LP | 0.02% | Add +218.3% | 34,512 | $597K |
| HSBC Holdings PLC | 0.00% | Add +7.3% | 34,063 | $585K |
| 4WEALTH Advisors, Inc. | 0.54% | New | 33,558 | $580K |
| GAMCO Investors | 0.01% | New | 32,721 | $566K |
| Envestnet Asset Management Inc. | 0.00% | Reduce -1.8% | 32,695 | $565K |
| Royal Bank of Canada | 0.00% | Reduce -34.6% | 32,413 | $560K |
| T. Rowe Price Associates Inc. | 0.00% | Add +17.9% | 32,243 | $558K |
| MQS Management LLC | 0.32% | New | 31,654 | $547K |
| R Squared Ltd | 0.23% | Add +27.1% | 30,899 | $534K |
| Prudential Financial Inc. | 0.00% | Add +2.0% | 29,910 | $517K |
"% of holder's portfolio" is OSBC's weight in each manager's 13F, not the share of Old Second Bancorp Inc. the manager owns.