Waterstone Financial, Inc. WSBF
CIK 0001569994 · CUSIP 94188P101
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $34.03M 1,641,766 shares | 0.00% | +135.78K(+9.0%)Added | SEC filing ↗ Aug 7, 2026 | ▾ |
| 02 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $29.39M 1,417,945 shares | 0.01% | +4.44K(+0.3%)Added | SEC filing ↗ Aug 11, 2026 | ▾ |
| 03 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $21.80M 1,051,571 shares | 0.03% | -42.90K(-3.9%)Reduced | SEC filing ↗ Aug 13, 2026 | ▾ |
| 04 | VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history | $13.29M 641,005 shares | 0.00% | -59.23K(-8.5%)Reduced | SEC filing ↗ Aug 13, 2026 | ▾ |
| 05 | STATE STREET CORP CIK 93751 · View history | $8.26M 398,372 shares | 0.00% | +3.86K(+1.0%)Added | SEC filing ↗ Aug 7, 2026 | ▾ |
| 06 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $8.05M 388,478 shares | 0.00% | +21.80K(+5.9%)Added | SEC filing ↗ Aug 12, 2026 | ▾ |
| 07 | AMERICAN CENTURY COMPANIES INC CIK 748054 · View history | $7.09M 341,972 shares | 0.00% | +91.89K(+36.7%)Added | SEC filing ↗ Aug 12, 2026 | ▾ |
| 08 | AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history | $5.37M 259,089 shares | 0.00% | +34.30K(+15.3%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 09 | CSM Advisors, LLC CIK 1863523 · View history | $4.58M 221,070 shares | 0.10% | +30.95K(+16.3%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 10 | BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history | $4.38M 211,375 shares | 0.08% | +6.26K(+3.1%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 11 | MORGAN STANLEY CIK 895421 · View history | $4.10M 197,809 shares | 0.00% | +44.18K(+28.8%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 12 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $4.08M 196,657 shares | 0.00% | -57.81K(-22.7%)Reduced | SEC filing ↗ Aug 14, 2026 | ▾ |
| 13 | Quantinno Capital Management LP CIK 1759654 · View history | $3.51M 169,424 shares | 0.00% | +28.01K(+19.8%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history | $3.46M 167,095 shares | 0.00% | 0(0.0%)Unchanged | SEC filing ↗ Aug 13, 2026 | ▾ |
| 15 | DONALD SMITH & CO., INC. CIK 814375 · View history | $3.41M 164,590 shares | 0.06% | -11.50K(-6.5%)Reduced | SEC filing ↗ Aug 11, 2026 | ▾ |
| 16 | NORTHERN TRUST CORP CIK 73124 · View history | $2.98M 143,761 shares | 0.00% | +3.68K(+2.6%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $2.68M 129,105 shares | 0.00% | +2.31K(+1.8%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 18 | Qube Research & Technologies Ltd CIK 1729829 · View history | $2.47M 119,139 shares | 0.00% | +91.30K(+328.0%)Added | SEC filing ↗ Aug 14, 2026 | ▾ |
| 19 | Empowered Funds, LLC CIK 1592828 · View history | $2.39M 115,282 shares | 0.01% | -7.10K(-5.8%)Reduced | SEC filing ↗ Aug 17, 2026 | ▾ |
| 20 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC CIK 1423442 · View history | $2.36M 113,777 shares | 0.01% | +76.94K(+208.8%)Added | SEC filing ↗ Aug 13, 2026 | ▾ |
Showing 20 / 125 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 125 reporting institutions.
This page includes 20 of 125 reporting institutions. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 125 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"94188P101","quarter":"2026Q2","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.