Security key
680277100
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 37,782,584
- Total 13F value
- $761,223,383
- Share change
- +687,325
- SEC-reported price per share
- $20.16
- Number of holders
- 188
- Value change
- +$14,310,416
- Number of buys
- 78
- Number of sells
- 81
- Shares outstanding
- 44,867,818
Holder snapshot
6 signals
Security identity
1 source field
Report period
Q1 2026
Institutions
188
Top holders
10
OSBC full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
OLD SECOND BANCORP INC SEC filings
OLD SECOND BANCORP INC company facts
Broader feeds
Reporting periods
Holder history for CUSIP 680277100
Recent filing periods:
Ownership snapshot
Top reported holders of OSBC - OLD SECOND BANCORP INC - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FJ Capital Management LLC
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
15 Jan 2026
13F
13D/G
3/4/5
Lead comparable stake: 4.2%
13D/G row: FJ Capital Management LLC
Showing 1-6 of 15 holder rows.
Quick read
FJ Capital Management LLC leads the comparable SEC ownership view at 4.2%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
FJ Capital Management LLC
4.2%
John Ladowicz
0.4%
BlackRock, Inc.
9.3%
VANGUARD GROUP INC
7.3%
DIMENSIONAL FUND ADVISORS LP
5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FJ Capital Management LLC |
13F
13D/G
Company
|
4.2%
from 13D/G
|
$35,678,468
1,829,665 shares
|
— | 31 Dec 2025 |
| John Ladowicz |
3/4/5
Director
|
0.4%
|
$3,741,295
181,013 shares
|
-$599,747 | 15 Jan 2026 |
| BlackRock, Inc. |
13F
Company
|
9.3%
|
$81,040,170
4,155,906 shares
|
— | 31 Dec 2025 |
| VANGUARD GROUP INC |
13F
Company
|
7.3%
|
$63,928,567
3,278,388 shares
|
— | 31 Dec 2025 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
5%
|
$44,087,037
2,260,874 shares
|
— | 31 Dec 2025 |
| Davis Asset Management, L.P. |
13F
Company
|
3.9%
|
$34,037,699
1,745,523 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
188
Shares
37,782,584
Rows available
188
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
186
Q1 2026 holders
188
Holder diff
2
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend