WATERSTONE FINL INC MD (WSBF): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in WSBF · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
7
13F filers
Aggregate Value
$35.7M
Across holders
Last Price
$21.18
2026-08-24
Sector
Financials
GICS
Quarterly fund activity2 increased4 reduced1 exited
Full exits: GAMCO INVESTORS, INC. ET AL
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 1.05M | $21.8M | 61.1% | 0.0% | Reduced | $-889K | Q2 2026 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 259K | $5.4M | 15.0% | 0.0% | Added | +$5.2M | Q2 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 0001164508 | Hedge Fund | 167K | $3.5M | 9.7% | 0.0% | Unchanged | +$0 | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 119K | $2.5M | 6.9% | 0.0% | Added | +$1.9M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 65K | $1.3M | 3.7% | 0.0% | Reduced | $-443K | Q2 2026 |
| SHAW D E & CO INC CIK 0001009207 | Hedge Fund | 34K | $703K | 2.0% | 0.0% | Reduced | $-141K | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 27K | $562K | 1.6% | 0.0% | Reduced | $-180K | Q2 2026 |
Reduced
Hedge Fund
$21.8M· 61.1% of total· 0.0% port· 1.05M sh· $-889K QoQ· Q2 2026
Added
Hedge Fund
$5.4M· 15.0% of total· 0.0% port· 259K sh· +$5.2M QoQ· Q2 2026
Unchanged
Hedge Fund
$3.5M· 9.7% of total· 0.0% port· 167K sh· +$0 QoQ· Q2 2026
Added
Hedge Fund
$2.5M· 6.9% of total· 0.0% port· 119K sh· +$1.9M QoQ· Q2 2026
Reduced
Hedge Fund
$1.3M· 3.7% of total· 0.0% port· 65K sh· $-443K QoQ· Q2 2026
Reduced
Hedge Fund
$703K· 2.0% of total· 0.0% port· 34K sh· $-141K QoQ· Q2 2026
Reduced
Hedge Fund
$562K· 1.6% of total· 0.0% port· 27K sh· $-180K QoQ· Q2 2026
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