WSBF · Waterstone Financial, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 125 13F filersWho Holds WSBF
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 125 filers, like-for-like change +4.0%; actively managed books +4.8%; index-like books +2.9%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 58.5% | 66 | +0.4% |
| Exempt adviser | 1.2% | 1 | +328.0% |
| Adviser | 0.4% | 4 | +11.1% |
| Bank | 7.4% | 11 | +1.5% |
| Benefit plan | 0.7% | 3 | +3.6% |
| Non-US | 0.3% | 4 | +46.7% |
| Holding company | 21.8% | 5 | +6.3% |
| Insurer | 0.0% | 0 | — |
| Unknown | 9.7% | 31 | +13.5% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 40.5% | 20 | +2.9% |
| Systematic-like | 2.6% | 6 | +15.0% |
| Concentrated | 1.1% | 14 | -64.2% |
| Diversified active | 55.8% | 85 | +8.4% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 59.4% | 79 | +7.3% |
| Medium turnover | 29.0% | 26 | -0.4% |
| High turnover | 2.6% | 9 | +7.1% |
| Unknown | 9.0% | 11 | -2.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 9.6% | 12 | -4.2% |
| Medium horizon | 21.1% | 21 | +9.7% |
| Long horizon | 66.1% | 88 | +5.4% |
| Unknown | 3.3% | 4 | -22.8% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 2.5% | 22 | -42.3% |
| $1B to $10B | 8.8% | 27 | +19.5% |
| $10B to $100B | 19.3% | 32 | +10.8% |
| $100B or more | 69.4% | 44 | +3.5% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 5.7% | 34 | +56.6% |
| Pooled investment vehicles | 14.7% | 7 | -14.7% |
| Registered funds and BDCs | 31.5% | 9 | -0.5% |
| Pension and profit sharing plans | 0.0% | 1 | 0.0% |
| Insurance companies | 0.1% | 2 | 0.0% |
| Governments and sovereign funds | 0.6% | 2 | +199.2% |
| Other investment advisers | 0.0% | 2 | -1.1% |
| Other | 0.2% | 1 | new |
| Diversified | 5.8% | 8 | +5.8% |
| Unknown | 41.5% | 59 | +9.6% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 22.8% | 15 | -4.2% |
| Private equity funds | 0.5% | 4 | +47.0% |
| Venture capital funds | 0.0% | 1 | +17.4% |
| Real estate funds | 0.1% | 3 | +248.2% |
| Securitized asset funds | 0.0% | 1 | 0.0% |
| Other private funds | 17.5% | 6 | +3.6% |
| Mixed private funds | 0.9% | 2 | +33.8% |
| Private funds, type not stated | 0.8% | 1 | +74.2% |
| No private funds | 17.2% | 34 | +4.8% |
| Unknown | 40.3% | 58 | +7.2% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 97.0% | 108 | +3.1% |
| Outside the US | 3.0% | 17 | +49.6% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 2 holders with no observed 2026-06-30 13F.
Conviction and Crowding
125 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 26.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shareholder Targets
13F filers that own its peers but not WSBF, quarter ended Jun 30, 2026WSBF has no holder-overlap peers, so these filers hold the largest Financial Services stocks: JPM, V, BRK-B, MA, BAC, MS, GS, AXP, WFC, C, SCHW, RY, CB, BLK, PGR, COF, SPGI, TD, BNY, PNC. 6,455 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Berkshire Hathaway Inc Insurer, Concentrated | $91,098,036,862 4 held | AXP, BAC, CB |
| 2 | NORGES BANK Non-US, Index-like | $78,828,529,437 20 held | BRK-B, JPM, MA |
| 3 | MITSUBISHI UFJ FINANCIAL GROUP INC Bank, Unknown | $78,825,883,309 1 held | MS |
| 4 | Capital World Investors Adviser, Diversified active | $41,660,487,063 17 held | V, BAC, JPM |
| 5 | Capital Research Global Investors Adviser, Diversified active | $41,654,734,639 15 held | JPM, WFC, MA |
| 6 | Fisher Asset Management, LLC Adviser, Diversified active | $40,528,385,823 19 held | GS, JPM, MS |
| 7 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $36,056,342,936 20 held | MA, BLK, V |
| 8 | AMERIPRISE FINANCIAL INC Adviser, Diversified active | $34,483,200,122 20 held | JPM, V, BAC |
| 9 | BANK OF MONTREAL /CAN/ Bank, Diversified active | $32,910,266,762 20 held | RY, TD, JPM |
| 10 | MASTERCARD FOUNDATION ASSET MANAGEMENT CORP Unknown, Unknown | $30,994,616,726 1 held | MA |
Fund Ownership of WSBF by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 11.84% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 2.96% | 531,330 |
| Index ETFs | 8.89% | 1,597,941 |
| Active ETFs | 3.05% | 548,242 |
| Active funds | 6.82% | 1,226,260 |
| Unclassified | 1.69% | 304,397 |
| All registered funds | 23.41% | 4,208,170 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $34,033,805 | 16.83% | 1,641,766 | Shares | 2026-08-07 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $29,393,997 | 14.54% | 1,417,945 | Shares | 2026-08-11 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $21,799,066 | 10.78% | 1,051,571 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $13,288,033 | 6.57% | 641,005 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $8,258,251 | 4.08% | 398,372 | Shares | 2026-09-22 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $8,053,148 | 3.98% | 388,478 | Shares | 2026-08-12 | |
| Mega AMERICAN CENTURY COMPANIES INC | $7,089,079 | 3.51% | 341,972 | Shares | 2026-08-12 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $5,370,910 | 2.66% | 259,089 | Shares | 2026-08-14 | |
| Mid CSM Advisors, LLC | $4,582,781 | 2.27% | 221,070 | Shares | 2026-08-14 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC Registered adviser | $4,381,803 | 2.17% | 211,375 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $4,100,577 | 2.03% | 197,809 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $4,076,698 | 2.02% | 196,657 | Shares | 2026-08-14 | |
| Large Quantinno Capital Management LP Registered adviser | $3,512,159 | 1.74% | 169,424 | Shares | 2026-08-13 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $3,463,879 | 1.71% | 167,095 | Shares | 2026-08-13 | |
| Mid DONALD SMITH & CO., INC. Registered adviser | $3,411,950 | 1.69% | 164,590 | Shares | 2026-08-11 | |
| Mega NORTHERN TRUST CORP Bank | $2,980,163 | 1.47% | 143,761 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $2,676,346 | 1.32% | 129,105 | Shares | 2026-08-14 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $2,469,751 | 1.22% | 119,139 | Shares | 2026-08-14 | |
| Large Empowered Funds, LLC Registered adviser | $2,389,795 | 1.18% | 115,282 | Shares | 2026-08-17 | |
| Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC Registered adviser | $2,358,597 | 1.17% | 113,777 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $2,112,158 | 1.04% | 101,889 | Shares | 2026-08-13 | |
| Small Fourthstone LLC Registered adviser | $2,050,404 | 1.01% | 98,910 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $2,004,155 | 0.99% | 96,679 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $1,877,390 | 0.93% | 90,564 | Shares | 2026-08-06 | |
| Mega FMR LLC Holding company | $1,842,295 | 0.91% | 88,871 | Shares | 2026-08-13 | |
| Mid RITHOLTZ WEALTH MANAGEMENT Registered adviser | $1,575,894 | 0.78% | 76,020 | Shares | 2026-08-11 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $1,338,100 | 0.66% | 64,549 | Shares | 2026-08-14 | |
| Small JOHN G ULLMAN & ASSOCIATES INC | $1,238,576 | 0.61% | 59,748 | Shares | 2026-08-11 | |
| Mid MARTINGALE ASSET MANAGEMENT L P Registered adviser | $1,228,418 | 0.61% | 59,258 | Shares | 2026-08-13 | |
| Small Teton Advisors, LLC Registered adviser | $1,223,070 | 0.60% | 59,000 | Shares | 2026-08-12 | |
| Mega HSBC HOLDINGS PLC | $1,025,927 | 0.51% | 49,490 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $904,449 | 0.45% | 43,630 | Shares | 2026-08-11 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $898,707 | 0.44% | 43,353 | Shares | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $866,057 | 0.43% | 41,778 | Shares | 2026-08-13 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $781,521 | 0.39% | 37,700 | Shares | 2026-08-13 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $721,404 | 0.36% | 34,800 | Shares | 2026-08-14 | |
| Large STRS OHIO Benefit plan | $713,112 | 0.35% | 34,400 | Shares | 2026-07-30 | |
| Mega D. E. Shaw & Co., Inc. | $703,285 | 0.35% | 33,926 | Shares | 2026-08-14 | |
| Large IEQ CAPITAL, LLC Registered adviser | $660,830 | 0.33% | 31,878 | Shares | 2026-08-11 | |
| Mega Russell Investments Group, Ltd. | $563,875 | 0.28% | 27,201 | Shares | 2026-08-06 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $561,617 | 0.28% | 27,092 | Shares | 2026-09-02 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $549,448 | 0.27% | 26,505 | Shares | 2026-08-14 | |
| Large Mariner, LLC Registered adviser | $464,704 | 0.23% | 22,417 | Shares | 2026-08-13 | |
| Large MERCER GLOBAL ADVISORS INC /ADV Registered adviser | $451,271 | 0.22% | 21,769 | Shares | 2026-08-19 | |
| Mid Hillsdale Investment Management Inc. Registered adviser | $422,892 | 0.21% | 20,400 | Shares | 2026-08-12 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $404,421 | 0.20% | 19,509 | Shares | 2026-08-12 | |
| Small Odyssean, LLC Registered adviser | $399,923 | 0.20% | 19,292 | Shares | 2026-08-14 | |
| Large COMMONWEALTH EQUITY SERVICES, LLC Registered adviser | $386,821 | 0.19% | 18,660 | Shares | 2026-07-29 | |
| Mega FRANKLIN RESOURCES INC Adviser | $384,395 | 0.19% | 18,543 | Shares | 2026-08-13 | |
| Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $364,948 | 0.18% | 18,563 | Shares | 2026-10-13 | |
| Mega Invesco Ltd. Adviser | $362,131 | 0.18% | 17,469 | Shares | 2026-08-14 | |
| Mid Curi Capital, LLC Registered adviser | $315,240 | 0.16% | 15,207 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $306,969 | 0.15% | 14,808 | Shares | 2026-08-07 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $280,040 | 0.14% | 13,509 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $273,655 | 0.14% | 13,201 | Shares | 2026-08-13 | |
| Mega CANADA PENSION PLAN INVESTMENT BOARD Non-US | $252,906 | 0.13% | 12,200 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $243,534 | 0.12% | 11,748 | Shares | 2026-08-12 | |
| Mid Jump Financial, LLC | $240,468 | 0.12% | 11,600 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $232,238 | 0.11% | 11,203 | Shares | 2026-08-14 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC Registered adviser | $227,615 | 0.11% | 10,980 | Shares | 2026-08-13 | |
| Large Sanctuary Advisors, LLC | $221,541 | 0.11% | 10,687 | Shares | 2026-08-13 | |
| Large Corient Private Wealth LLC Registered adviser | $209,953 | 0.10% | 10,128 | Shares | 2026-08-27 | |
| Mid BEESE FULMER INVESTMENT MANAGEMENT, INC. Registered adviser | $209,559 | 0.10% | 10,109 | Shares | 2026-07-29 | |
| Large Cerity Partners LLC Registered adviser | $205,288 | 0.10% | 9,903 | Shares | 2026-08-14 | |
| Large Eurizon Capital SGR S.p.A. | $201,619 | 0.10% | 9,726 | Shares | 2026-07-29 | |
| Mega BARCLAYS PLC Bank | $189,928 | 0.09% | 9,162 | Shares | 2026-08-14 | |
| Large MetLife Investment Management, LLC Registered adviser | $182,942 | 0.09% | 8,825 | Shares | 2026-08-14 | |
| Large Arax Advisory Partners Registered adviser | $168,970 | 0.08% | 8,151 | Shares | 2026-08-10 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $146,063 | 0.07% | 7,046 | Shares | 2026-07-29 | |
| Mega CITIGROUP INC Bank | $145,005 | 0.07% | 6,995 | Shares | 2026-08-03 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $144,280 | 0.07% | 6,960 | Shares | 2026-08-14 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $141,337 | 0.07% | 6,818 | Shares | 2026-08-13 | |
| Mega PNC FINANCIAL SERVICES GROUP, INC. Bank | $122,369 | 0.06% | 5,903 | Shares | 2026-08-07 | |
| Large Police & Firemen's Retirement System of New Jersey | $115,611 | 0.06% | 5,577 | Shares | 2026-07-23 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $100,644 | 0.05% | 4,855 | Shares | 2026-08-13 | |
| Large Farther Finance Advisors, LLC Registered adviser | $65,566 | 0.03% | 3,335 | Shares | 2026-10-08 | |
| Mid Versant Capital Management, Inc Registered adviser | $48,599 | 0.02% | 2,472 | Shares | 2026-10-02 | |
| Mega UBS Group AG Bank | $41,417 | 0.02% | 1,998 | Shares | 2026-08-13 | |
| Large CANADA LIFE ASSURANCE Co | $41,397 | 0.02% | 1,997 | Shares | 2026-08-13 | |
| Mid Tower Research Capital LLC (TRC) | $30,929 | 0.02% | 1,492 | Shares | 2026-08-11 | |
| Mega Legal & General Group Plc | $29,871 | 0.01% | 1,441 | Shares | 2026-08-14 | |
| Mid Ameritas Investment Partners, Inc. Registered adviser | $25,560 | 0.01% | 1,233 | Shares | 2026-08-13 | |
| Large OSAIC HOLDINGS, INC. Holding company | $24,585 | 0.01% | 1,186 | Shares | 2026-08-14 | |
| Mid State of Alaska, Department of Revenue | $22,785 | 0.01% | 1,159 | Shares | 2026-10-15 | |
| Small Pinnacle Wealth Planning Services, Inc. Registered adviser | $22,388 | 0.01% | 1,080 | Shares | 2026-08-07 | |
| Mid EverSource Wealth Advisors, LLC Registered adviser | $20,708 | 0.01% | 999 | Shares | 2026-07-24 | |
| Mega ROYAL BANK OF CANADA Bank | $16,479 | 0.01% | 795 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $16,107 | 0.01% | 777 | Shares | 2026-08-13 | |
| Small State of Wyoming | $14,034 | 0.01% | 677 | Shares | 2026-08-06 | |
| Large Allworth Financial LP | $9,452 | 0.00% | 456 | Shares | 2026-08-11 | |
| Mid IFP Advisors, Inc Registered adviser | $8,493 | 0.00% | 432 | Shares | 2026-10-16 | |
| Mid HARBOUR INVESTMENTS, INC. Registered adviser | $7,089 | 0.00% | 342 | Shares | 2026-08-12 | |
| Mid Sterling Capital Management LLC Registered adviser | $6,343 | 0.00% | 306 | Shares | 2026-07-28 | |
| Small Essential Partners LLC Registered adviser | $5,917 | 0.00% | 301 | Shares | 2026-10-14 | |
| Mid MassMutual Private Wealth & Trust, FSB | $5,819 | 0.00% | 296 | Shares | 2026-10-05 | |
| Large BROWN BROTHERS HARRIMAN & CO Adviser | $5,659 | 0.00% | 273 | Shares | 2026-08-12 | |
| Mid GAMMA Investing LLC Registered adviser | $5,308 | 0.00% | 270 | Shares | 2026-10-08 | |
| Small JPL Wealth Management, LLC Registered adviser | $4,560 | 0.00% | 220 | Shares | 2026-08-14 | |
| Mid ROTHSCHILD INVESTMENT LLC Registered adviser | $4,477 | 0.00% | 216 | Shares | 2026-08-06 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $4,332 | 0.00% | 209 | Shares | 2026-08-24 |
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