Old Second Bancorp Ownership | Who Owns Old Second Bancorp?
Old Second Bancorp Ownership Summary
Old Second Bancorp is owned by 39.86% institutional investors, 4.73% insiders, and 55.41% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 8.49% of OSBC shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.04% of its assets in Old Second Bancorp shares.
OSBC Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Old Second Bancorp | 39.86% | 4.73% | 55.41% |
| Sector | Financial Services Stocks | 36.95% | 15.48% | 47.58% |
| Industry | Regional Banks Stocks | 38.26% | 12.54% | 49.20% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 3.82M | 8.49% | $65.99M |
| Blackrock | 3.44M | 7.68% | $50.90M |
| Vanguard group | 3.27M | 7.27% | $56.52M |
| Dimensional fund advisors lp | 2.20M | 4.90% | $38.11M |
| Fj capital management | 1.92M | 4.27% | $33.19M |
| Goldman sachs group | 1.56M | 3.47% | $26.94M |
| Davis asset management | 1.50M | 3.34% | $25.93M |
| American century companies | 1.39M | 3.09% | $23.99M |
| State street | 1.37M | 3.04% | $23.64M |
| Geode capital management | 1.36M | 3.03% | $23.57M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Jacobs asset management | 478.22K | 4.52% | $8.27M |
| Fj capital management | 1.92M | 3.54% | $33.19M |
| Banc funds | 1.01M | 3.04% | $17.40M |
| River street advisors | 383.95K | 2.57% | $6.64M |
| Stieven capital advisors | 778.03K | 2.54% | $13.45M |
| Elizabeth park capital advisors | 158.66K | 2.22% | $2.74M |
| Ejf capital | 173.83K | 1.75% | $3.00M |
| Pmc fig opportunities | 56.57K | 1.47% | $977.79K |
| Gator capital management | 335.33K | 1.47% | $5.80M |
| Jcsd capital | 75.10K | 1.11% | $1.30M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Northern trust | 997.90K | 0.00% | 583.49K |
| Vanguard group | 3.27M | 0.00% | 553.17K |
| River street advisors | 383.95K | 2.57% | 383.95K |
| Blackrock funding, inc. /de | 3.82M | 0.00% | 316.18K |
| Millennium management | 308.22K | 0.00% | 252.43K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Aptus capital advisors | - | - | -286.89K |
| Banc funds | 1.01M | 3.04% | -151.00K |
| Adage capital partners gp | - | - | -100.00K |
| Ubs asset management americas | 52.02K | 0.00% | -75.92K |
| Trexquant investment lp | - | - | -74.37K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Bank of montreal /can/ | 179.35K | 0.00% | 179.35K | $3.10M |
| Boothbay fund management | 125.25K | 0.03% | 125.25K | $2.16M |
| Sara-bay financial | 99.06K | 0.48% | 99.06K | $1.71M |
| Jcsd capital | 75.10K | 1.11% | 75.10K | $1.30M |
| Pmc fig opportunities | 56.57K | 1.47% | 56.57K | $977.79K |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Nelson, van denburg & campbell wealth management group | -9.00 |
| Massmutual trust co fsb/adv | -19.00 |
| Stephens consulting | -25.00 |
| Parkside financial bank & trust | -30.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 100 | -42.86% | 17,925,486 | -39.33% | 39 | 0.92% | 59 | -31.40% | 24 | -60.66% |
| Jun 30, 2025 | 181 | -5.73% | 32,449,598 | -1.08% | 72 | 1.36% | 87 | 6.10% | 66 | -7.04% |
| Mar 31, 2025 | 192 | 6.67% | 32,815,678 | 1.68% | 72 | 1.41% | 83 | -18.63% | 71 | 65.12% |
| Dec 31, 2024 | 74 | -57.71% | 11,733,217 | -62.96% | 26 | 0.52% | 38 | -61.22% | 15 | -69.39% |
| Sep 30, 2024 | 175 | 13.64% | 31,673,483 | 3.14% | 70 | 1.51% | 98 | 15.29% | 49 | 16.67% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.37M | 3.04% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.34M | 2.98% | -29.79K |
| Avantis US Small Cap Value ETF | 1.07M | 2.03% | 3.29K |
| iShares Russell 2000 ETF | 1.06M | 2.02% | - |
| Vanguard Institutional Extnd Mkt Idx Tr | 484.39K | 1.08% | -211.62K |
| Kennedy Small Cap Value | 434.29K | 0.96% | 434.29K |
| JHancock Regional Bank A | 468.90K | 0.89% | - |
| Goldman Sachs Small Cap Value A | 377.90K | 0.84% | 56.89K |
| Fidelity Small Cap Index | 429.27K | 0.82% | -7.27K |
| John Hancock Financial Opportunities Fund | 355.99K | 0.79% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Dec 09, 2025 | Ladowicz John | - | Sell | $250.00K |
| Nov 26, 2025 | Ladowicz John | - | Sell | $249.99K |
| Oct 31, 2025 | Campbell Darin Patrick | President, Powersports Lending | Sell | $557.31K |
| Oct 30, 2025 | Campbell Darin Patrick | President, Powersports Lending | Sell | $482.33K |
| Aug 04, 2025 | Lyons Billy J Jr. | - | Buy | $415.25 |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | 4 |
| 2025 Q3 | 1 | - |
| 2025 Q2 | - | - |
| 2025 Q1 | 1 | - |
| 2024 Q4 | 2 | 1 |
OSBC Ownership FAQ
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