Old Second Bancorp Ownership | Who Owns Old Second Bancorp?
Old Second Bancorp Ownership Summary
Old Second Bancorp is owned by 70.99% institutional investors, 4.53% insiders, and 24.48% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 7.83% of OSBC shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.12% of its assets in Old Second Bancorp shares.
OSBC Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Old Second Bancorp | 70.99% | 4.53% | 24.48% |
| Sector | Financial Services Stocks | 37.05% | 15.59% | 47.36% |
| Industry | Regional Banks Stocks | 38.44% | 12.57% | 48.99% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 4.13M | 7.83% | $83.19M |
| Blackrock | 3.44M | 7.68% | $50.90M |
| Vanguard group | 3.28M | 6.22% | $63.93M |
| Dimensional fund advisors lp | 2.39M | 4.54% | $48.16M |
| Davis asset management | 1.80M | 3.42% | $36.29M |
| Goldman sachs group | 1.69M | 3.21% | $34.10M |
| State street | 1.60M | 3.04% | $32.24M |
| American century companies | 1.59M | 3.02% | $32.07M |
| Fj capital management | 1.51M | 2.86% | $30.34M |
| Boston partners | 1.44M | 2.74% | $29.28M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| River street advisors | 746.66K | 5.09% | $15.05M |
| Banc funds | 1.03M | 3.86% | $20.75M |
| Fj capital management | 1.51M | 3.42% | $30.34M |
| Stieven capital advisors | 773.53K | 3.33% | $15.59M |
| Elizabeth park capital advisors | 166.46K | 2.58% | $3.36M |
| Ejf capital | 151.17K | 2.15% | $3.05M |
| Jacobs asset management | 150.00K | 1.81% | $3.02M |
| Jcsd capital | 74.10K | 1.58% | $1.49M |
| Pmc fig opportunities | 56.57K | 1.47% | $977.79K |
| Gator capital management | 351.48K | 1.45% | $7.09M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Boston partners | 1.44M | 0.03% | 626.58K |
| Goldman sachs group | 1.69M | 0.00% | 428.30K |
| River street advisors | 746.66K | 5.09% | 380.59K |
| Vanguard fiduciary trust | 335.48K | 0.00% | 335.48K |
| Nuveen asset management | 281.57K | 0.00% | 183.87K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fj capital management | 1.51M | 3.42% | -324.56K |
| Aptus capital advisors | - | - | -286.89K |
| Millennium management | 31.48K | 0.00% | -282.08K |
| Adage capital partners gp | - | - | -243.19K |
| Lsv asset management | - | - | -193.43K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 335.48K | 0.00% | 335.48K | $6.76M |
| Boothbay fund management | 125.25K | 0.03% | 125.25K | $2.16M |
| Pmc fig opportunities | 56.57K | 1.47% | 56.57K | $977.79K |
| Y-intercept (hong kong) | 52.58K | 0.02% | 52.58K | $1.06M |
| Vanguard global advisers | 31.89K | 0.00% | 31.89K | $642.96K |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -1.00 |
| Hallmark capital management | -1.00 |
| Nelson, van denburg & campbell wealth management group | -9.00 |
| Massmutual trust co fsb/adv | -19.00 |
| Stephens consulting | -25.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 184 | -0.54% | 37,389,493 | 0.13% | 70 | 1.41% | 84 | -16.83% | 62 | 6.90% |
| Dec 31, 2025 | 90 | -54.77% | 15,739,656 | -56.46% | 29 | 0.46% | 48 | -60.33% | 24 | -47.83% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 1.61M | 3.12% | - |
| Vanguard US Total Market Shares ETF | 1.37M | 3.04% | - |
| Avantis US Small Cap Value ETF | 1.36M | 2.64% | - |
| iShares Russell 2000 ETF | 1.19M | 2.30% | 10.01K |
| Kennedy Small Cap Value | 673.03K | 1.30% | 16.93K |
| Vanguard Institutional Extnd Mkt Idx Tr | 594.36K | 1.15% | 3.52K |
| Fidelity Small Cap Index | 488.38K | 0.94% | 6.78K |
| JHancock Regional Bank A | 450.95K | 0.87% | - |
| State Street® SPDR® S&PRgnllBkgETF | 444.75K | 0.86% | -4.10K |
| Goldman Sachs Small Cap Value A | 434.24K | 0.84% | 103.01K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| May 22, 2026 | COLLINS GARY S | VICE CHAIRMAN | Sell | $108.13K |
| May 21, 2026 | COLLINS GARY S | VICE CHAIRMAN | Sell | $211.20K |
| May 11, 2026 | Lyons Billy J Jr. | - | Buy | $501.60 |
| May 11, 2026 | Pilmer Donald | EVP | Sell | $518.79K |
| May 08, 2026 | COLLINS GARY S | VICE CHAIRMAN | Sell | $106.13K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | 1 | 4 |
| 2026 Q1 | - | 6 |
| 2025 Q4 | - | 4 |
| 2025 Q3 | 1 | - |
| 2025 Q2 | - | - |
OSBC Ownership FAQ
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