Security Snapshot

OLD SECOND BANCORP INC - Common Stock (OSBC) Institutional Ownership

CUSIP: 680277100

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

185

Shares (Excl. Options)

37,121,663

Price

$19.50

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Type / Class
Equity / Common Stock
Symbol
OSBC on Nasdaq
Shares outstanding
44,867,818
Price per share
$20.74
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
37,121,663
Total reported value
$723,915,945
% of total 13F portfolios
0%
Share change
+1,023,625
Value change
+$22,655,418
Number of holders
185
Price from insider filings
$20.74
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • OSBC - OLD SECOND BANCORP INC - Common Stock is tracked under CUSIP 680277100.
  • 185 institutions reported positions in Q4 2025.
  • 1 significant owner is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 185 to 134 between Q4 2025 and Q1 2026.
  • Reported value moved from $723,915,945 to $448,961,834.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 185 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 680277100?
CUSIP 680277100 identifies OSBC - OLD SECOND BANCORP INC - Common Stock in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of OLD SECOND BANCORP INC - Common Stock (OSBC) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
FJ Capital Management LLC 4.2% $30,197,746 1,870,988 FJ Capital Management LLC 30 Sep 2024

As of 31 Dec 2025, 185 institutional investors reported holding 37,121,663 shares of OLD SECOND BANCORP INC - Common Stock (OSBC). This represents 83% of the company’s total 44,867,818 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of OLD SECOND BANCORP INC - Common Stock (OSBC) together control 66% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 9.3% 4,155,906 +8.9% 0% $81,040,170
VANGUARD GROUP INC 7.3% 3,278,388 +0.26% 0% $63,928,567
DIMENSIONAL FUND ADVISORS LP 5% 2,260,874 +2.5% 0.01% $44,087,037
FJ Capital Management LLC 4.1% 1,829,665 -4.7% 3.9% $35,678,468
Davis Asset Management, L.P. 3.9% 1,745,523 +16% 1.2% $34,037,699
STATE STREET CORP 3.4% 1,539,419 +13% 0% $30,018,671
AMERICAN CENTURY COMPANIES INC 3.3% 1,470,185 +5.9% 0.01% $28,668,625
GEODE CAPITAL MANAGEMENT, LLC 3% 1,365,448 +0.17% 0% $26,632,393
KENNEDY CAPITAL MANAGEMENT LLC 2.8% 1,267,042 +16% 0.52% $24,707,319
GOLDMAN SACHS GROUP INC 2.8% 1,263,223 -19% 0% $24,632,849
WELLINGTON MANAGEMENT GROUP LLP 2.2% 969,708 +521% 0% $18,909,306
BANC FUNDS CO LLC 2% 905,190 -10% 3.5% $17,651,205
MANUFACTURERS LIFE INSURANCE COMPANY, THE 2% 891,878 -2.7% 0.01% $17,391,621
NORTHERN TRUST CORP 2% 881,576 -12% 0% $17,190,734
JPMORGAN CHASE & CO 1.9% 858,806 +10% 0% $16,746,719
Boston Partners 1.8% 817,311 0.02% $15,993,994
Stieven Capital Advisors, L.P. 1.7% 776,128 -0.24% 2.8% $15,134,496
ALLIANCEBERNSTEIN L.P. 1.5% 686,032 -1.9% 0% $13,377,624
AQR CAPITAL MANAGEMENT LLC 1% 447,118 -14% 0% $8,718,811
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.98% 437,510 -0.02% 0% $8,531,445
BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.95% 427,617 -15% 0.17% $8,338,532
Nuveen, LLC 0.93% 415,470 +0.19% 0% $8,101,665
River Street Advisors LLC 0.82% 366,071 -4.7% 2.7% $7,138,388
Bank of New York Mellon Corp 0.77% 344,292 +1% 0% $6,713,693
BANK OF AMERICA CORP /DE/ 0.76% 342,579 -3.3% 0% $6,680,292

Institutional Holders of OLD SECOND BANCORP INC - Common Stock (OSBC) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 22,271,079 $448,961,834 +$21,556,947 $20.16 134
2025 Q4 37,121,663 $723,915,945 +$22,655,418 $19.50 185
2025 Q3 36,122,810 $624,386,523 +$60,397,598 $17.28 196
2025 Q2 32,658,226 $579,421,668 -$2,205,450 $17.74 183
2025 Q1 32,856,817 $546,654,606 +$9,459,109 $16.64 193
2024 Q4 32,274,259 $573,914,478 +$8,731,176 $17.78 179
2024 Q3 31,750,437 $494,981,555 +$9,646,886 $15.59 174
2024 Q2 30,880,867 $457,349,769 +$14,611,972 $14.81 152
2024 Q1 29,994,221 $415,144,007 -$7,898,827 $13.84 151
2023 Q4 30,471,166 $470,442,806 +$11,984,972 $15.44 159
2023 Q3 29,894,848 $406,777,836 +$6,191,501 $13.61 144
2023 Q2 29,517,177 $385,502,797 -$3,192,315 $13.06 133
2023 Q1 29,517,673 $414,997,466 +$8,049,890 $14.06 153
2022 Q4 29,392,278 $471,484,534 -$862,564 $16.04 145
2022 Q3 29,461,474 $384,622,795 -$1,304,858 $13.05 129
2022 Q2 29,531,771 $395,245,692 +$29,341,330 $13.38 133
2022 Q1 27,822,741 $403,768,517 +$80,729,514 $14.51 133
2021 Q4 22,379,100 $281,729,212 +$20,815,663 $12.59 126
2021 Q3 20,378,098 $266,051,454 -$687,324 $13.06 110
2021 Q2 20,445,539 $253,528,578 -$847,688 $12.40 111
2021 Q1 20,521,289 $271,046,191 +$1,806,131 $13.21 99
2020 Q4 20,887,918 $211,083,948 -$1,535,843 $10.10 96
2020 Q3 21,035,517 $157,748,402 -$765,917 $7.50 100
2020 Q2 21,252,658 $164,993,436 +$582,122 $7.78 107
2020 Q1 21,323,329 $147,326,661 -$777,363 $6.91 112
2019 Q4 20,967,316 $282,333,894 +$311,271 $13.47 118
2019 Q3 21,046,621 $257,281,087 +$3,567,900 $12.22 116
2019 Q2 20,751,747 $264,953,091 +$4,771,748 $12.77 118
2019 Q1 20,548,755 $258,799,144 -$7,365,051 $12.59 120
2018 Q4 21,085,083 $274,068,070 +$1,582,011 $13.00 122
2018 Q3 20,788,537 $321,062,136 -$284,477 $15.45 121
2018 Q2 20,797,617 $299,398,000 +$3,850,785 $14.40 109
2018 Q1 20,540,802 $285,139,832 +$865,239 $13.90 107
2017 Q4 20,495,206 $279,784,812 +$2,427,074 $13.65 112
2017 Q3 20,290,198 $272,874,540 +$12,853,617 $13.45 96
2017 Q2 19,423,433 $224,335,023 +$1,769,937 $11.55 89
2017 Q1 19,277,677 $216,871,644 +$24,352,891 $11.25 79
2016 Q4 18,982,526 $209,755,636 -$436,313 $11.05 88
2016 Q3 19,533,917 $162,324,877 +$1,244,490 $8.31 78
2016 Q2 19,535,029 $133,421,597 -$160,722 $6.83 78
2016 Q1 19,580,280 $140,491,940 +$1,302,399 $7.17 78
2015 Q4 19,381,967 $152,024,340 +$9,349,545 $7.84 73
2015 Q3 18,205,733 $113,418,688 +$4,360,689 $6.23 67
2015 Q2 17,500,470 $115,499,165 +$6,482,824 $6.60 62
2015 Q1 16,650,232 $95,222,006 +$2,652,729 $5.72 48
2014 Q4 16,186,077 $86,918,005 -$667,536 $5.37 41
2014 Q3 15,595,042 $75,013,005 -$1,643,251 $4.81 42
2014 Q2 15,934,025 $79,167,005 +$62,468,864 $4.97 44
2014 Q1 3,370,333 $15,517,005 +$1,123,835 $4.60 27
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