Security record · archived quarter
OSBC
Old Second Bancorp, Inc. · Financial Services · Banks - Regional
86Tracked holders
+3Δ holders
25.75MShares held
$518.74MReported value
+6New positions
−3Exits
Momentum inputs (comparable managers):
holder breadth +3.6% ·
share flow +1.3% ·
net new positions +3.5%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 76 | -7 | 26.35M | $612.20M | +2 | −9 |
| Q1 2026 | 86 | +3 | 25.75M | $518.74M | +6 | −3 |
| Q4 2025 | 83 | 0 | 26.46M | $516.04M | +2 | −2 |
| Q3 2025 | 19 | 0 | 14.70M | $254.02M | +1 | −1 |
| Q2 2025 | 16 | -2 | 10.11M | $179.35M | — | −2 |
| Q1 2025 | 15 | +2 | 4.21M | $70.01M | +2 | — |
| Q4 2024 | 13 | 0 | 4.39M | $78.07M | +1 | −1 |
| Q3 2024 | 12 | +1 | 2.37M | $37.00M | +1 | — |
| Q2 2024 | 11 | — | 2.48M | $36.78M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 4.13M | -0.7% | $83.19M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 14 | Dimensional Fund Advisors Lp | 2.39M | +5.7% | $48.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Dimensional Fund Advisors Lp | 2.39M | +5.7% | $48.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | Dimensional Fund Advisors Lp | 2.39M | +5.7% | $48.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | Dimensional Fund Advisors Lp | 2.39M | +5.7% | $48.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Vanguard Capital Management Llc | 2.25M | — | $45.40M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Goldman Sachs Group ✦ | 1.69M | +33.9% | $34.10M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | Goldman Sachs Group ✦ | 1.69M | +33.9% | $34.10M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 21 | State Street Global Advisors ✦ (passive) | 1.60M | +3.9% | $32.24M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 22 | American Century Companies Inc | 1.59M | +8.2% | $32.07M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 23 | Boston Partners | 1.44M | +76.7% | $29.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | Boston Partners | 1.44M | +76.7% | $29.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Geode Capital Management ✦ (passive) | 1.28M | -6.1% | $25.85M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 26 | Geode Capital Management ✦ (passive) | 1.28M | -6.1% | $25.85M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 27 | Manufacturers Life Insurance… | 878.67K | -1.5% | $17.71M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | Wellington Management ✦ | 857.78K | -11.5% | $17.29M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 29 | Northern Trust Corp | 764.34K | -13.3% | $15.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 30 | Northern Trust Corp | 764.34K | -13.3% | $15.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 31 | Northern Trust Corp | 764.34K | -13.3% | $15.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Northern Trust Corp | 764.34K | -13.3% | $15.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 33 | Northern Trust Corp | 764.34K | -13.3% | $15.41M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | JPMorgan Chase ✦ | 700.95K | -18.4% | $13.91M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 35 | JPMorgan Chase ✦ | 700.95K | -18.4% | $13.91M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 36 | JPMorgan Chase ✦ | 700.95K | -18.4% | $13.91M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 700.95K | -18.4% | $13.91M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 38 | Alliancebernstein L.P. | 690.85K | +0.7% | $13.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Charles Schwab Investment… | 430.91K | -1.5% | $8.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Nuveen, LLC | 419.64K | +1.0% | $8.46M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Nuveen, LLC | 419.64K | +1.0% | $8.46M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 43 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 44 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 45 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 46 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 47 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 48 | AQR Capital Management ✦ | 391.96K | -12.3% | $7.90M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 49 | Bank of New York Mellon Corp | 337.26K | -2.0% | $6.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 50 | Bank of New York Mellon Corp | 337.26K | -2.0% | $6.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 51 | Bank of New York Mellon Corp | 337.26K | -2.0% | $6.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 52 | Bank of New York Mellon Corp | 337.26K | -2.0% | $6.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 53 | Bank of New York Mellon Corp | 337.26K | -2.0% | $6.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | Bank Of America Corp /De/ | 331.33K | -3.3% | $6.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Bank Of America Corp /De/ | 331.33K | -3.3% | $6.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Bank Of America Corp /De/ | 331.33K | -3.3% | $6.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 57 | Bank Of America Corp /De/ | 331.33K | -3.3% | $6.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 61 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 62 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 63 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 64 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 65 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 66 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 67 | Morgan Stanley ✦ | 278.39K | -3.4% | $5.61M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 68 | UBS Group AG | 259.27K | +46.4% | $5.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | UBS Group AG | 259.27K | +46.4% | $5.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Sei Investments Co | 203.09K | +73.5% | $4.09M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Sei Investments Co | 203.09K | +73.5% | $4.09M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Squarepoint Ops LLC | 170.65K | +252.1% | $3.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Blair William & Co/Il | 162.88K | +5.6% | $3.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 74 | Arrowstreet Capital ✦ | 141.03K | -34.9% | $2.84M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 75 | Victory Capital Management Inc | 139.05K | -10.1% | $2.80M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Bank Of Montreal /Can/ | 118.47K | -14.9% | $2.39M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 77 | Bank Of Montreal /Can/ | 118.47K | -14.9% | $2.39M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Russell Investments Group, Ltd. | 111.95K | -0.1% | $2.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 79 | Russell Investments Group, Ltd. | 111.95K | -0.1% | $2.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 80 | Russell Investments Group, Ltd. | 111.95K | -0.1% | $2.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 81 | Swiss National Bank | 98.70K | 0.0% | $1.99M | 0.0% | Held | 2 | SEC ↗ |
| 82 | Fisher Asset Management ✦ | 97.28K | 0.0% | $1.96M | 0.0% | Held | 8 | SEC ↗ |
| 83 | Renaissance Technologies ✦ | 90.22K | +4.5% | $1.82M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 84 | Franklin Resources Inc | 88.17K | New | $1.78M | 0.0% | New | 1 | SEC ↗ |
| 85 | Barclays Plc | 87.00K | -39.2% | $1.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 86 | Barclays Plc | 87.00K | -39.2% | $1.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 87 | Barclays Plc | 87.00K | -39.2% | $1.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 88 | Hsbc Holdings Plc | 85.18K | -46.8% | $1.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Invesco Ltd. | 81.61K | +1.3% | $1.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 90 | Invesco Ltd. | 81.61K | +1.3% | $1.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 91 | Invesco Ltd. | 81.61K | +1.3% | $1.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 92 | Invesco Ltd. | 81.61K | +1.3% | $1.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | Invesco Ltd. | 81.61K | +1.3% | $1.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 94 | Principal Financial Group Inc | 75.09K | +50.8% | $1.51M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 95 | Principal Financial Group Inc | 75.09K | +50.8% | $1.51M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | UBS AM, a distinct business unit of… | 67.53K | +4.3% | $1.36M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 97 | UBS AM, a distinct business unit of… | 67.53K | +4.3% | $1.36M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Two Sigma Investments ✦ | 67.36K | +106.6% | $1.36M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 99 | Rhumbline Advisers | 66.09K | -1.3% | $1.33M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | Citadel Advisors ✦ | 60.06K | -10.8% | $1.21M | 0.0% | ▼ Trim | 8 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Franklin Resources Inc | $1.78M | 0.0% |
Exited
| Adage Capital Partners | $4.74M | was 0.0% |
| Qube Research & Technologies… | $1.25M | was 0.0% |
| Canada Pension Plan… | $136,500 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 187 holders, 37.08M shares, $741.50M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 12
Eccher James
Officer, Director · 19.31K sh · $494,701
Aug 11
Eccher James
Officer, Director · 55.69K sh · $1.42M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
Get this via the API