Vault-13

WATERSTONE FINL INC MD WSBF

COM · Common Stock · CUSIP 94188P101

126 institutional holders +3 vs Q1 2026
9,652,5889.7m shares reported held*
53.7% of all shares outstanding*
$200.0mreported value*
15 new 52 added 30 reduced 11 sold out net bought ≈ $7.8m (+379.0k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.6m this quarter). Holder counts are more reliable. Shares outstanding: 18.0m as of 2026-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $20.72. Options: 1 managers hold calls ($8.3k notional), 0 hold puts (—).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 100Q4 22: 106Q1 23: 102Q2 23: 94Q3 23: 93Q4 23: 89Q1 24: 87Q2 24: 83Q3 24: 89Q4 24: 93Q1 25: 96Q2 25: 97Q3 25: 102Q4 25: 112Q1 26: 123Q2 26: 126126Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 2022100
Q4 2022106
Q1 2023102
Q2 202394
Q3 202393
Q4 202389
Q1 202487
Q2 202483
Q3 202489
Q4 202493
Q1 202596
Q2 202597
Q3 2025102
Q4 2025112
Q1 2026123
Q2 2026126

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 24: 40 bought or addedQ3 24: 28 cut or sold outQ4 24: 36 bought or addedQ4 24: 42 cut or sold outQ4 24Q1 25: 40 bought or addedQ1 25: 42 cut or sold outQ2 25: 55 bought or addedQ2 25: 33 cut or sold outQ2 25Q3 25: 52 bought or addedQ3 25: 37 cut or sold outQ4 25: 51 bought or addedQ4 25: 51 cut or sold outQ4 25Q1 26: 59 bought or addedQ1 26: 45 cut or sold outQ2 26: 67 bought or addedQ2 26: 41 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20244028
Q4 20243642
Q1 20254042
Q2 20255533
Q3 20255237
Q4 20255151
Q1 20265945
Q2 20266741

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$20k$40k$60kQ3 25 calls: $0Q3 25 puts: $0Q3 25P/C —Q4 25 calls: $3.3kQ4 25 puts: $0Q4 25P/C 0.00Q1 26 calls: $45.1kQ1 26 puts: $0Q1 26P/C 0.00Q2 26 calls: $8.3kQ2 26 puts: $0Q2 26P/C 0.00
Numbers
QuarterCallsPutsP/C
Q3 2025$0$0—
Q4 2025$3.3k$00.00
Q1 2026$45.1k$00.00
Q2 2026$8.3k$00.00

Biggest buyers

BlackRock, Inc. Added +135,777+135.8k
AMERICAN CENTURY COMPANIES INC Added +91,887+91.9k
Qube Research & Technologies Ltd Added +91,303+91.3k
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Added +76,937+76.9k
MORGAN STANLEY Added +44,178+44.2k
ALGERT GLOBAL LLC New +37,700+37.7k
AQR CAPITAL MANAGEMENT LLC Added +34,295+34.3k
RITHOLTZ WEALTH MANAGEMENT Added +32,373+32.4k
CSM Advisors, LLC Added +30,945+30.9k
Quantinno Capital Management LP Added +28,013+28.0k

Biggest sellers

Fourthstone LLC Reduced -192,281-192.3k
VANGUARD CAPITAL MANAGEMENT LLC Reduced -59,232-59.2k
GOLDMAN SACHS GROUP INC Reduced -57,807-57.8k
RENAISSANCE TECHNOLOGIES LLC Reduced -42,900-42.9k
TWO SIGMA INVESTMENTS, LP Reduced -21,376-21.4k
XTX Topco Ltd Sold out -17,618-17.6k
JANE STREET GROUP, LLC Sold out -15,682-15.7k
CITADEL ADVISORS LLC Reduced -12,368-12.4k
DONALD SMITH & CO., INC. Reduced -11,500-11.5k
Engineers Gate Manager LP Sold out -10,206-10.2k

Biggest calls

SIMPLEX TRADING, LLC Reduced $8.3k400 shares

Biggest puts

None

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution filed 2026-01-21 7.1% 1.3m≈ $27.1m 2026-01-21

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 2 sellingQ1 25: 0 buyingQ1 25: 4 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 1 sellingQ3 25Q4 25: 0 buyingQ4 25: 1 sellingQ1 26: 0 buyingQ1 26: 3 sellingQ1 26Q2 26: 0 buyingQ2 26: 1 sellingQ3 26: 0 buyingQ3 26: 1 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—2$1.3m—
Q1 20250—4$2.2m—
Q2 20250—0——
Q3 20250—1$2.6m—
Q4 20250—1$1.2m—
Q1 20260—3$2.1m—
Q2 20260—1$183.4k—
Q3 20260—1$172.4k—
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-13 Gordon Ryan J EVP/Chief Credit Officer Sold 8,157 $21.14 $172.4k8.2k shares -41%
2026-05-21 Gerke Mark Raymond EVP/Chief Financial Officer Sold 10,000 $18.34 $183.4k10.0k shares -25%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock, Inc. 0.00% of their portfolio New York, NY 1,641,7661.6m $34.0m $34.0m 0.00% Added +135.8k +135,777
2 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 1,417,9451.4m $29.4m $29.4m 0.01% Added +4.4k +4,443
3 RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio NEW YORK, NY 1,051,5711.1m $21.8m $21.8m 0.03% Reduced -42.9k -42,900
4 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 641,005641.0k $13.3m $13.3m 0.00% Reduced -59.2k -59,232
5 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 398,372398.4k $8.3m $8.3m 0.00% Added +3.9k +3,857
6 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 388,478388.5k $8.1m $8.1m 0.00% Added +21.8k +21,798
7 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 341,972342.0k $7.1m $7.1m 0.00% Added +91.9k +91,887
8 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 259,089259.1k $5.4m $5.4m 0.00% Added +34.3k +34,295
9 CSM Advisors, LLC 0.10% of their portfolio WARRENDALE, PA 221,070221.1k $4.6m $4.6m 0.10% Added +30.9k +30,945
10 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.08% of their portfolio HOUSTON, TX 211,375211.4k $4.4m $4.4m 0.08% Added +6.3k +6,259
11 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 197,809197.8k $4.1m $4.1m 0.00% Added +44.2k +44,178
12 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 196,657196.7k $4.1m $4.1m 0.00% Reduced -57.8k -57,807
13 Quantinno Capital Management LP 0.00% of their portfolio NEW YORK, NY 169,424169.4k $3.5m $3.5m 0.00% Added +28.0k +28,013
14 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio BOSTON, MA 167,095167.1k $3.5m $3.5m 0.00% Unchanged
15 DONALD SMITH & CO., INC. 0.06% of their portfolio NEW YORK, NY 164,590164.6k $3.4m $3.4m 0.06% Reduced -11.5k -11,500
16 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 143,761143.8k $3.0m $3.0m 0.00% Added +3.7k +3,682
17 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 129,105129.1k $2.7m $2.7m 0.00% Added +2.3k +2,313
18 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 119,139119.1k $2.5m $2.5m 0.00% Added +91.3k +91,303
19 Empowered Funds, LLC 0.01% of their portfolio NEWTOWN SQUARE, PA 115,282115.3k $2.4m $2.4m 0.01% Reduced -7.1k -7,098
20 O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio Stamford, CT 113,777113.8k $2.4m $2.4m 0.01% Added +76.9k +76,937
21 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 101,889101.9k $2.1m $2.1m 0.00% Added +14.2k +14,238
22 Fourthstone LLC 1.46% of their portfolio ST LOUIS, MO 98,91098.9k $2.1m $2.1m 1.46% Reduced -192.3k -192,281
23 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 96,67996.7k $2.0m $2.0m 0.00% Added +3.6k +3,601
24 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 90,56490.6k $1.9m $1.9m 0.00% Added +6.6k +6,633
25 FMR LLC 0.00% of their portfolio BOSTON, MA 88,87188.9k $1.8m $1.8m 0.00% Added +4.7k +4,657
26 RITHOLTZ WEALTH MANAGEMENT 0.02% of their portfolio NEW YORK, NY 76,02076.0k $1.6m $1.6m 0.02% Added +32.4k +32,373
27 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 64,54964.5k $1.3m $1.3m 0.00% Reduced -21.4k -21,376
28 JOHN G ULLMAN & ASSOCIATES INC 0.15% of their portfolio CORNING, NY 59,74859.7k $1.2m $1.2m 0.15% Reduced -1.5k -1,500
29 MARTINGALE ASSET MANAGEMENT L P 0.03% of their portfolio BOSTON, MA 59,25859.3k $1.2m $1.2m 0.03% Added +21.0k +21,024
30 Teton Advisors, LLC 0.71% of their portfolio GREENWICH, CT 59,00059.0k $1.2m $1.2m 0.71% Unchanged
31 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 49,49049.5k $1.0m $1.0m 0.00% Added +1.5k +1,478
32 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 43,63043.6k $904.5k $904.5k 0.00% Unchanged
33 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 43,35343.4k $898.7k $898.7k 0.00% Reduced -1.8k -1,847
34 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 41,77841.8k $866.1k $866.1k 0.00% Reduced -3.0k -2,969
35 ALGERT GLOBAL LLC 0.01% of their portfolio SAN FRANCISCO, CA 37,70037.7k $781.5k $781.5k 0.01% New
36 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 34,80034.8k $721.4k $721.4k 0.00% Added +200 +200
37 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 34,40034.4k $713.1k $713.1k 0.00% Added +2.8k +2,800
38 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 33,92633.9k $703.3k $703.3k 0.00% Reduced -6.8k -6,779
39 IEQ CAPITAL, LLC 0.00% of their portfolio Foster City, CA 31,87831.9k $660.8k $660.8k 0.00% Reduced -258 -258
40 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 27,20127.2k $563.9k $563.9k 0.00% Added +7.3k +7,260
41 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 27,09227.1k $561.6k $561.6k 0.00% Reduced -12.4k -12,368
42 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 26,50526.5k $477.9k $477.9k 0.00% Added +625 +625
43 BAILARD, INC. 0.01% of their portfolio Foster City, CA 22,60022.6k $468.5k $468.5k 0.01% New
44 Mariner, LLC 0.00% of their portfolio Overland Park, KS 22,41722.4k $464.7k $464.7k 0.00% Added +1.1k +1,050
45 MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio DENVER, CO 21,76921.8k $451.3k $451.3k 0.00% Added +4.5k +4,538
46 Hillsdale Investment Management Inc. 0.01% of their portfolio Toronto, A6 20,40020.4k $422.9k $422.9k 0.01% New
47 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 19,50919.5k $404.4k $404.4k 0.00% Added +389 +389
48 Odyssean, LLC 0.07% of their portfolio DARIEN, CT 19,29219.3k $399.9k $399.9k 0.07% New
49 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 18,66018.7k $386.8k $386.8k 0.00% Reduced -4.8k -4,778
50 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 18,54318.5k $384.4k $384.4k 0.00% Added +3.3k +3,344
51 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 17,46917.5k $362.1k $362.1k 0.00% Added +196 +196
52 WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio PLYMOUTH, MN 16,82416.8k $332.4k $332.4k 0.00% Added +2.6k +2,584
53 Curi Capital, LLC 0.00% of their portfolio CHICAGO, IL 15,20715.2k $315.2k $315.2k 0.00% Added +68 +68
54 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 14,80814.8k $307.0k $307.0k 0.00% Added +11.4k +11,360
55 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 13,50913.5k $280.0k $280.0k 0.00% Added +7.0k +7,036
56 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 13,20113.2k $273.7k $273.7k 0.00% New
57 CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio TORONTO ONTARIO, A6 12,20012.2k $252.9k $252.9k 0.00% Unchanged
58 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 11,74811.7k $242.0k $242.0k 0.00% Reduced -9.3k -9,310
59 Jump Financial, LLC 0.00% of their portfolio Chicago, IL 11,60011.6k $240.5k $240.5k 0.00% New
60 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 11,20311.2k $233.0k $233.0k 0.00% Added +393 +393
61 LOS ANGELES CAPITAL MANAGEMENT LLC 0.00% of their portfolio LOS ANGELES, CA 10,98011.0k $227.6k $227.6k 0.00% Reduced -388 -388
62 Sanctuary Advisors, LLC 0.00% of their portfolio INDIANAPOLIS, IN 10,68710.7k $221.5k $221.5k 0.00% New
63 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 10,12810.1k $210.0k $210.0k 0.00% New
64 BEESE FULMER INVESTMENT MANAGEMENT, INC. 0.01% of their portfolio CANTON, OH 10,10910.1k $209.6k $209.6k 0.01% Added +44 +44
65 Cerity Partners LLC 0.00% of their portfolio NEW YORK, NY 9,9039.9k $205.3k $205.3k 0.00% New
66 Eurizon Capital SGR S.p.A. 0.00% of their portfolio MILAN, L6 9,7269.7k $200.5k $200.5k 0.00% Added +549 +549
67 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 9,1629.2k $189.9k $189.9k 0.00% Reduced -2.6k -2,551
68 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 8,8258.8k $182.9k $182.9k 0.00% Unchanged
69 Arax Advisory Partners 0.00% of their portfolio NEW YORK, NY 8,1518.2k $169.0k $169.0k 0.00% Added +7.5k +7,549
70 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 7,0467.0k $146.1k $146.1k 0.00% Added +5.0k +5,000
71 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 6,9957.0k $145.0k $145.0k 0.00% Added +5.1k +5,061
72 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 6,9607.0k $144.3k $144.3k 0.00% Reduced -267 -267
73 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 6,8186.8k $141.3k $141.3k 0.00% Unchanged
74 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 5,9035.9k $122.4k $122.4k 0.00% Added +3.5k +3,497
75 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 5,5775.6k $115.6k $115.6k 0.00% Added +2.3k +2,265
76 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 4,8554.9k $100.6k $100.6k 0.00% Reduced -1.2k -1,181
77 Farther Finance Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 3,2703.3k $67.8k $67.8k 0.00% Reduced -120 -120
78 Versant Capital Management, Inc 0.00% of their portfolio PHOENIX, AZ 2,4722.5k $51.2k $51.2k 0.00% Unchanged
79 UBS Group AG 0.00% of their portfolio ZURICH, V8 1,9982.0k $41.4k $41.4k 0.00% Reduced -5.8k -5,779
80 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 1,9972.0k $41.0k $41.0k 0.00% Reduced -151 -151
81 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,4921.5k $30.9k $30.9k 0.00% Reduced -991 -991
82 Legal & General Group Plc 0.00% of their portfolio London, X0 1,4411.4k $29.9k $29.9k 0.00% Unchanged
83 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,2331.2k $25.6k $25.6k 0.00% Unchanged
84 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,1861.2k $24.6k $24.6k 0.00% Reduced -1.1k -1,085
85 State of Alaska, Department of Revenue 0.00% of their portfolio JUNEAU, AK 1,1591.2k $24.0k $24.0k 0.00% Unchanged
86 Integrated Wealth Concepts LLC 0.00% of their portfolio WALTHAM, MA 1,1501.1k $23.8k $23.8k 0.00% New
87 Pinnacle Wealth Planning Services, Inc. 0.00% of their portfolio MANSFIELD, OH 1,0801.1k $22.4k $22.4k 0.00% Unchanged
88 EverSource Wealth Advisors, LLC 0.00% of their portfolio BIRMINGHAM, AL 999999 $20.7k $20.7k 0.00% Reduced -896 -896
89 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 795795 $16.0k $16.0k 0.00% Added +438 +438
90 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 777777 $16.1k $16.1k 0.00% Unchanged
91 State of Wyoming 0.00% of their portfolio CHEYENNE, WY 677677 $14.0k $14.0k 0.00% Added +503 +503
92 MassMutual Private Wealth & Trust, FSB 0.00% of their portfolio Windsor, CT 504504 $10.4k $10.4k 0.00% Unchanged
93 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 456456 $9.5k $9.5k 0.00% Added +150 +150
94 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 421421 $8.7k $8.7k 0.00% Added +206 +206
95 HARBOUR INVESTMENTS, INC. 0.00% of their portfolio MADISON, WI 342342 $7.1k $7.1k 0.00% Added +3 +3
96 Essential Partners LLC 0.00% of their portfolio RANCHO SANTA FE, CA 331331 $6.9k $6.9k 0.00% Reduced -612 -612
97 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 306306 $6.3k $6.3k 0.00% Reduced -197 -197
98 BROWN BROTHERS HARRIMAN & CO 0.00% of their portfolio NEW YORK, NY 273273 $5.7k $5.7k 0.00% Unchanged
99 JPL Wealth Management, LLC 0.00% of their portfolio GREENWOOD VILLAGE, CO 220220 $4.6k $4.6k 0.00% Unchanged
100 ROTHSCHILD INVESTMENT LLC 0.00% of their portfolio CHICAGO, IL 216216 $4.5k $4.5k 0.00% Added +32 +32