OLD SECOND BANCORP INC DEL (OSBC): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in OSBC · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
10
13F filers
Aggregate Value
$36.3M
Across holders
Last Price
$25.45
2026-08-24
Sector
Financials
GICS
Quarterly fund activity5 increased4 reduced2 exited
Full exits: GAMCO INVESTORS, INC. ET AL, MILLENNIUM MANAGEMENT LLC
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 386K | $9.0M | 24.8% | 0.0% | Reduced | +$8.9M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 304K | $7.1M | 19.5% | 0.0% | Added | +$4.3M | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 211K | $4.9M | 13.5% | 0.0% | Added | +$1.6M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 201K | $4.7M | 12.9% | 0.0% | Added | +$3.1M | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 168K | $3.9M | 10.8% | 0.0% | Reduced | $-65K | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 114K | $2.7M | 7.3% | 0.0% | Added | — | Q2 2026 |
| Fisher Asset Management, LLC CIK 0000850529 | Institutional Manager | 97K | $2.3M | 6.3% | 0.0% | Unchanged | +$0 | Q2 2026 |
| ExodusPoint Capital Management, LP CIK 0001736225 | Hedge Fund | 54K | $1.3M | 3.5% | 0.0% | Added | — | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 21K | $495K | 1.4% | 0.0% | Reduced | $-1.6M | Q2 2026 |
| Rockefeller Capital Management L.P. CIK 0001739439 | Hedge Fund | 123 | $3K | 0.0% | 0.0% | Reduced | $-7K | Q2 2026 |
Reduced
Hedge Fund
$9.0M· 24.8% of total· 0.0% port· 386K sh· +$8.9M QoQ· Q2 2026
Added
Hedge Fund
$7.1M· 19.5% of total· 0.0% port· 304K sh· +$4.3M QoQ· Q2 2026
Added
Hedge Fund
$4.9M· 13.5% of total· 0.0% port· 211K sh· +$1.6M QoQ· Q2 2026
Added
Hedge Fund
$4.7M· 12.9% of total· 0.0% port· 201K sh· +$3.1M QoQ· Q2 2026
Reduced
Hedge Fund
$3.9M· 10.8% of total· 0.0% port· 168K sh· $-65K QoQ· Q2 2026
Added
Hedge Fund
$2.7M· 7.3% of total· 0.0% port· 114K sh· — QoQ· Q2 2026
Unchanged
Institutional Manager
$2.3M· 6.3% of total· 0.0% port· 97K sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$1.3M· 3.5% of total· 0.0% port· 54K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$495K· 1.4% of total· 0.0% port· 21K sh· $-1.6M QoQ· Q2 2026
Reduced
Hedge Fund
$3K· 0.0% of total· 0.0% port· 123 sh· $-7K QoQ· Q2 2026
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