13F reference period
Q2 2026
Security Snapshot
OLD SECOND BANCORP INC - Common Stock (OSBC) Institutional Ownership
CUSIP: 680277100
13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026
Institutions Reporting
184
Shares (Excl. Options)
38.83M
Full value: 38,829,690 · shares · 30 Jun 2026Price
$23.32
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
Save this security page for your next review
Watchlists follow companies and investors, across their share classes. Bookmark this page to revisit this specific CUSIP and its quarterly holders. If you create an account from here, we will bring you back after verification.
- Security type / class
- Equity / Common Stock
- Symbol
- OSBC on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 38,829,690
- Total 13F value
- $903,287,799
- Portfolio coverage rank
- 0%
- Share change
- +1,068,690
- Value change
- +$26,665,685
- Number of holders
- 184
- Shares outstanding
- 50,945,308
- SEC-reported price per share
- $24.86
- Insider filing price
- $24.86
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- OSBC - OLD SECOND BANCORP INC - Common Stock is tracked under CUSIP 680277100.
- 184 institutions reported positions in Q2 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 188 to 184 between Q1 2026 and Q2 2026.
- SEC-reported value moved from to
$761.22M
Full value: $761,223,383 · USD · 31 Mar 2026.$903.29M
Full value: $903,287,799 · USD · 30 Jun 2026
Research use
- 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.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 184 institutions filings for Q2 2026.
Security key
680277100
13F reference period
Q2 2026
13F holders
184
13D/G owners
3
CIK / CUSIP context first
Open Q2 2026 holders
OSBC full holder history
OLD SECOND BANCORP INC SEC filings
OLD SECOND BANCORP INC company facts
OLD SECOND BANCORP INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 680277100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
OSBC
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 5.1% | $63,080,166 | 2,575,752 | Dimensional Fund Advisors LP | 30 Sep 2026 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5% | $62,756,825 | 2,562,549 | Vanguard Capital Management | 30 Sep 2026 | |||
| FJ Capital Management LLC | 4.2% | $30,197,746 | 1,870,988 | FJ Capital Management LLC | 30 Sep 2024 |
As of 30 Jun 2026,
184
institutional investors reported holding
shares of
OLD SECOND BANCORP INC - Common Stock (OSBC).
This represents
76%
of the company’s total
outstanding shares.
38.83M
Full value: 38,829,690 · shares · 30 Jun 202650.95M
Full value: 50,945,308 · shares · Stored outstanding share count13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
59%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.4% | 4,298,683 | +4.2% | 0% | $100,245,292 |
| DIMENSIONAL FUND ADVISORS LP | 4.9% | 2,498,671 | +4.6% | 0.01% | $58,268,836 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.3% | 2,179,877 | -3.2% | 0% | $50,834,732 |
| STATE STREET CORP | 3.6% | 1,839,202 | +15% | 0% | $42,887,045 |
| Davis Asset Management, L.P. | 3.5% | 1,800,000 | 0% | 1.1% | $41,976,000 |
| AMERICAN CENTURY COMPANIES INC | 3.5% | 1,783,820 | +12% | 0.02% | $41,598,684 |
| GOLDMAN SACHS GROUP INC | 3.2% | 1,624,852 | -3.9% | 0% | $37,891,548 |
| FJ Capital Management LLC | 2.9% | 1,460,413 | -3% | 4.4% | $34,056,831 |
| Boston Partners | 2.8% | 1,415,165 | -2% | 0.03% | $32,924,716 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 1,349,432 | +5.3% | 0% | $31,474,650 |
| KENNEDY CAPITAL MANAGEMENT LLC | 2.4% | 1,236,983 | -2.5% | 0.51% | $28,846,444 |
| BANC FUNDS CO LLC | 2% | 1,034,143 | +0.49% | 4% | $24,116,215 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.7% | 872,651 | -0.69% | 0.02% | $20,350,221 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.6% | 819,368 | +15% | 0% | $19,107,662 |
| Stieven Capital Advisors, L.P. | 1.6% | 815,328 | +5.4% | 3.6% | $19,013,449 |
| River Street Advisors LLC | 1.5% | 779,008 | +4.3% | 5.4% | $18,166,456 |
| ALLIANCEBERNSTEIN L.P. | 1.3% | 641,845 | -7.1% | 0% | $12,939,595 |
| JPMORGAN CHASE & CO | 1.1% | 555,602 | -21% | 0% | $12,895,522 |
| NORTHERN TRUST CORP | 1.1% | 555,408 | -27% | 0% | $12,952,115 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.1% | 544,345 | -37% | 0% | $12,694,125 |
| Nuveen, LLC | 0.97% | 492,162 | +17% | 0% | $11,477,218 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.89% | 453,323 | +3.4% | 0.19% | $10,571,492 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.85% | 431,304 | +0.09% | 0% | $10,058,009 |
| AQR CAPITAL MANAGEMENT LLC | 0.76% | 386,234 | -1.5% | 0% | $9,006,974 |
| BANK OF AMERICA CORP /DE/ | 0.73% | 372,648 | +12% | 0% | $8,690,151 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 1,023,686 | $25,089,899 | -$15,578,697 | $24.49 | 35 |
| 2026 Q2 | 38,829,690 | $903,287,799 | +$26,665,685 | $23.32 | 184 |
| 2026 Q1 | 37,782,584 | $761,223,383 | +$14,310,416 | $20.16 | 188 |
| 2025 Q4 | 37,122,870 | $723,939,482 | +$22,657,212 | $19.50 | 186 |
| 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 |