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Middlesex Water Co

MSEX
Exchange
Nasdaq
Industry
Water Supply
SEC CIK
0000066004

In the last 90 days, Middlesex Water Co insiders filed 0 open-market purchases and 1 sale; 227 institutions reported holding it in 13F filings for Q2 2026, worth $881.5M in total; no superinvestor holds it.

Other share classesMSEXP

13F holders, Q3 2025

Institutional positions in Middlesex Water Co as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
214
−1 vs. Q2 2025
Shares held
14.3M
+811.1K (+6.0%) vs. Q2 2025
Total value
$776.1M
+$37.0M (+5.0%) vs. Q2 2025
New holders
27
84 more added
Sold out
28
58 more reduced

2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MSEX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2025: 214 institutions
Q1 2021: 161 institutionsQ2 2021: 160 institutionsQ3 2021: 189 institutionsQ4 2021: 205 institutionsQ1 2022: 203 institutionsQ2 2022: 209 institutionsQ3 2022: 200 institutionsQ4 2022: 202 institutionsQ1 2023: 201 institutionsQ2 2023: 185 institutionsQ3 2023: 186 institutionsQ4 2023: 191 institutionsQ1 2024: 191 institutionsQ2 2024: 197 institutionsQ3 2024: 199 institutionsQ4 2024: 210 institutionsQ1 2025: 215 institutionsQ2 2025: 217 institutionsQ3 2025: 214 institutionsQ4 2025: 203 institutionsQ1 2026: 221 institutionsQ2 2026: 227 institutions
Value heldQ3 2025: $776.1M
Q1 2021: $846.0MQ2 2021: $877.9MQ3 2021: $1.28BQ4 2021: $1.45BQ1 2022: $1.31BQ2 2022: $1.04BQ3 2022: $925.3MQ4 2022: $977.4MQ1 2023: $921.9MQ2 2023: $1.01BQ3 2023: $829.0MQ4 2023: $854.4MQ1 2024: $675.4MQ2 2024: $678.3MQ3 2024: $901.2MQ4 2024: $713.2MQ1 2025: $886.9MQ2 2025: $739.4MQ3 2025: $776.1MQ4 2025: $764.0MQ1 2026: $793.4MQ2 2026: $881.5M
Institutions holding MSEX and their total value by quarter
QuarterHoldersValue
Q2 2026227$881.5M
Q1 2026221$793.4M
Q4 2025203$764.0M
Q3 2025214$776.1M
Q2 2025217$739.4M
Q1 2025215$886.9M
Q4 2024210$713.2M
Q3 2024199$901.2M
Q2 2024197$678.3M
Q1 2024191$675.4M
Q4 2023191$854.4M
Q3 2023186$829.0M
Q2 2023185$1.01B
Q1 2023201$921.9M
Q4 2022202$977.4M
Q3 2022200$925.3M
Q2 2022209$1.04B
Q1 2022203$1.31B
Q4 2021205$1.45B
Q3 2021189$1.28B
Q2 2021160$877.9M
Q1 2021161$846.0M

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding Middlesex Water Co; share changes are against Q2 2025.

Institutions holding MSEX in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
First Trust Advisors LP6,743$364.9K0.00%−657,043−99.0%Reduced
Blackhill Capital Inc6,666$360.8K0.02%00.0%Unchanged
Citigroup Inc6,201$335.6K0.00%−10,331−62.5%Reduced
Manufacturers Life Insurance Company, The6,065$328.2K0.00%−537−8.1%Reduced
Guyasuta Investment Advisors Inc6,000$324.7K0.02%00.0%Unchanged
FMR LLC5,886$318.6K0.00%−913−13.4%Reduced
Ballentine Partners, LLC5,852$316.7K0.00%−180−3.0%Reduced
Advisor Group Holdings, Inc.5,750$308.0K0.00%+889+18.3%Added
Martingale Asset Management L P5,610$303.6K0.01%+5,610New
Farmers & Merchants Trust Co of Long Beach5,579$301.9K0.06%00.0%Unchanged
New York State Common Retirement Fund5,548$300.3K0.00%00.0%Unchanged
Yousif Capital Management, LLC5,527$299.1K0.00%−1,076−16.3%Reduced
Arizona State Retirement System5,284$286.0K0.00%+62+1.2%Added
Amalgamated Bank5,257$285.0K0.00%+179+3.5%Added
Syon Capital LLC5,235$283.3K0.02%+5,235New
Janney Montgomery Scott LLC5,228$283.0K0.00%+39+0.8%Added
Comerica Bank5,220$282.5K0.00%−1,270−19.6%Reduced
Stifel Financial Corp5,215$282.2K0.00%+698+15.5%Added
Kestra Advisory Services, LLC5,122$277.2K0.00%−50−1.0%Reduced
Teachers Retirement System of the State of Kentucky5,057$274.0K0.00%−642−11.3%Reduced
Pictet Asset Management Holding SA5,000$270.6K0.00%+61+1.2%Added
Teton Advisors, LLC5,000$270.6K0.17%+5,000New
Police & Firemen's Retirement System of New Jersey4,933$267.0K0.00%+970+24.5%Added
Envestnet Asset Management Inc4,900$265.2K0.00%+4,900New
State Board of Administration of Florida Retirement System4,791$259.3K0.00%−22,402−82.4%Reduced
Cetera Investment Advisers4,767$258.0K0.00%+4,767New
Cullen Capital Management LLC4,695$254.1K0.00%00.0%Unchanged
GAMMA Investing LLC4,649$251.6K0.01%+1,027+28.4%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys4,588$248.3K0.00%−13−0.3%Reduced
Clean Yield Group4,525$244.9K0.07%00.0%Unchanged
Atria Investments LLC4,434$240.0K0.00%+4,434New
State of Tennessee, Treasury Department4,351$235.5K0.00%−2,246−34.0%Reduced
Coldstream Capital Management Inc4,191$226.8K0.00%−466−10.0%Reduced
Quantessence Capital LLC4,086$221.1K0.07%+4,086New
Oregon Public Employees Retirement Fund4,014$217.2K0.00%−100−2.4%Reduced
SRS Capital Advisors, Inc.4,013$217.2K0.00%+3,861+2,540.1%Added
CWM, LLC3,906$211.0K0.00%+2,164+124.2%Added
Armstrong Advisory Group, Inc3,534$191.3K0.01%−17−0.5%Reduced
KLP Kapitalforvaltning AS3,500$189.4K0.00%00.0%Unchanged
Public Employees Retirement Association of Colorado2,966$161.0K0.00%00.0%Unchanged
Bokf, NA2,461$133.2K0.00%00.0%Unchanged
Ameritas Investment Partners, Inc.1,491$80.7K0.00%−251−14.4%Reduced
St Germain D J Co Inc1,332$72.1K0.00%00.0%Unchanged
Global Retirement Partners, LLC1,272$68.9K0.00%00.0%Unchanged
Essential Partners LLC1,133$61.3K0.02%+1,133New
Sterling Capital Management LLC1,049$56.8K0.00%+626+148.0%Added
Pathway Financial Advisers, LLC995$53.8K0.02%+995New
Tower Research Capital LLC (TRC)993$53.7K0.00%−665−40.1%Reduced
Steward Partners Investment Advisory, LLC971$52.6K0.00%00.0%Unchanged
City State Bank967$52.3K0.02%00.0%Unchanged
Rockefeller Capital Management L.P.963$52.1K0.00%+963New
Concord Wealth Partners919$49.7K0.01%+2+0.2%Added
US Bancorp825$44.6K0.00%−587−41.6%Reduced
NBT Bank N A820$44.4K0.00%00.0%Unchanged
Crowley Wealth Management, Inc.785$42.5K0.03%00.0%Unchanged
Costello Asset Management, INC781$42.3K0.01%+4+0.5%Added
Nisa Investment Advisors, LLC645$34.9K0.00%+170+35.8%Added
Hantz Financial Services, Inc.635$34.0K0.00%+368+137.8%Added
North Star Investment Management Corp.625$33.8K0.00%00.0%Unchanged
Glen Eagle Advisors, LLC615$33.3K0.00%+315+105.0%Added
Allworth Financial LP585$31.7K0.00%+46+8.5%Added
Versant Capital Management, Inc566$30.6K0.00%+469+483.5%Added
Clarity Asset Management, Inc.480$26.0K0.01%+3+0.6%Added
Creative Financial Designs Inc449$24.3K0.00%−2,296−83.6%Reduced
Northwestern Mutual Wealth Management Co442$23.9K0.00%+2+0.5%Added
Central Trust Co425$23.0K0.00%00.0%Unchanged
Jones Financial Companies LLLP425$22.7K0.00%+1+0.2%Added
Massmutual Trust Co FSB342$18.5K0.00%+26+8.2%Added
Signaturefd, LLC309$16.7K0.00%−110−26.3%Reduced
Farther Finance Advisors, LLC302$16.3K0.00%+288+2,057.1%Added
Hanson & Doremus Investment Management300$16.0K0.00%00.0%Unchanged
TSFG, LLC284$15.0K0.00%+2+0.7%Added
Rosenberg Matthew Hamilton265$14.3K0.00%00.0%Unchanged
Harbour Investments, Inc.250$13.5K0.00%00.0%Unchanged
Fifth Third Bancorp242$13.1K0.00%−83−25.5%Reduced
Spire Wealth Management223$12.1K0.00%−92−29.2%Reduced
Smartleaf Asset Management LLC173$9.23K0.00%+8+4.8%Added
EverSource Wealth Advisors, LLC163$8.82K0.00%+106+186.0%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.144$8.00K0.00%−48−25.0%Reduced
Wealthspire Advisors, LLC117$6.33K0.00%+117New
Parallel Advisors, LLC116$6.28K0.00%+69+146.8%Added
Quent Capital, LLC112$6.06K0.00%+112New
SJS Investment Consulting Inc.100$5.41K0.00%00.0%Unchanged
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.72$3.90K0.00%00.0%Unchanged
Salomon & Ludwin, LLC62$3.32K0.00%+62New
Umb Bank N A61$3.30K0.00%−61−50.0%Reduced
IFP Advisors, Inc60$3.25K0.00%+49+445.5%Added
Larson Financial Group LLC58$3.13K0.00%+46+383.3%Added
Bessemer Group Inc53$3.00K0.00%00.0%Unchanged
GWM Advisors LLC36$1.95K0.00%+36New
Rothschild Investment LLC35$1.89K0.00%00.0%Unchanged
VSM Wealth Advisory, LLC35$1.89K0.00%00.0%Unchanged
TD Private Client Wealth LLC23$1.25K0.00%+23New
Tortoise Investment Management, LLC23$1.25K0.00%+23New
GPS Wealth Strategies Group, LLC21$1.11K0.00%+1+5.0%Added
Vermillion Wealth Management, Inc.19$1.04K0.00%00.0%Unchanged
Private Wealth Management Group, LLC17$9210.00%00.0%Unchanged
Parkside Financial Bank & Trust12$6500.00%−10−45.5%Reduced
Farmers & Merchants Investments Inc12$6490.00%00.0%Unchanged
Quarry LP11$5950.00%−162−93.6%Reduced