Security key
680277100
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 30,471,166
- Total 13F value
- $470,442,806
- Share change
- +696,150
- Put/Call ratio
- 0%
- SEC-reported price per share
- $15.44
- Number of holders
- 159
- Value change
- +$11,984,972
- Number of buys
- 78
- Number of sells
- 50
- Shares outstanding
- 44,867,818
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2023
Institutions
159
Top holders
10
OSBC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
30 Sep 2023
13F
Lead comparable stake: 7.1%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 7.1%.
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.
Open SEC evidence
Opens BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
7.1%
Forum Financial Management, LP
6.4%
FJ Capital Management LLC
5.9%
VANGUARD GROUP INC
5%
BANC FUNDS CO LLC
4.6%
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 |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
7.1%
|
$43,248,143
3,177,674 shares
|
— | 30 Sep 2023 |
| Forum Financial Management, LP |
13F
Company
|
6.4%
|
$38,920,218
2,859,678 shares
|
— | 30 Sep 2023 |
| FJ Capital Management LLC |
13F
Company
|
5.9%
|
$36,035,537
2,647,725 shares
|
— | 30 Sep 2023 |
| VANGUARD GROUP INC |
13F
Company
|
5%
|
$30,766,724
2,260,597 shares
|
— | 30 Sep 2023 |
| BANC FUNDS CO LLC |
13F
Company
|
4.6%
|
$27,918,000
2,051,310 shares
|
— | 30 Sep 2023 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
2.7%
|
$16,601,681
1,219,820 shares
|
— | 30 Sep 2023 |
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 Q4 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
159
Shares
30,471,166
Rows available
159
| 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 Q4 2023 vs Q1 2026 Across Filers
Q1 2026 holders
188
Q4 2023 holders
159
Holder diff
-29
| Investor | Q1 2026 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q1 2026 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend