MIDDLESEX WTR CO MSEX
COM · Common Stock · CUSIP 596680108
- SectorUtilities
- IndustryWater Supply
- HeadquartersIselin, NJ
- Founded1897
- Websitemiddlesexwater.com
- FilingsSEC EDGAR
* 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 ($4.0m this quarter). Holder counts are more reliable. Shares outstanding: 18.8m as of 2026-07-29, 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 ≈ $56.15. Options: 5 managers hold calls ($2.7m notional), 2 hold puts ($572.8k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 201 |
| Q4 2022 | 202 |
| Q1 2023 | 202 |
| Q2 2023 | 186 |
| Q3 2023 | 188 |
| Q4 2023 | 193 |
| Q1 2024 | 192 |
| Q2 2024 | 198 |
| Q3 2024 | 200 |
| Q4 2024 | 211 |
| Q1 2025 | 216 |
| Q2 2025 | 218 |
| Q3 2025 | 214 |
| Q4 2025 | 203 |
| Q1 2026 | 221 |
| Q2 2026 | 226 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 72 | 98 |
| Q4 2024 | 90 | 76 |
| Q1 2025 | 89 | 97 |
| Q2 2025 | 117 | 78 |
| Q3 2025 | 112 | 85 |
| Q4 2025 | 82 | 109 |
| Q1 2026 | 104 | 82 |
| Q2 2026 | 119 | 77 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $773.8k | $43.0k | 0.06 |
| Q4 2025 | $1.3m | $0 | 0.00 |
| Q1 2026 | $1.1m | $15.6k | 0.01 |
| Q2 2026 | $2.7m | $572.8k | 0.21 |
Biggest buyers
| TSP Capital Management Group, LLC | New | +211.0k |
| BlackRock, Inc. | Added | +117.9k |
| TWO SIGMA INVESTMENTS, LP | Added | +97.5k |
| AQR CAPITAL MANAGEMENT LLC | Added | +66.7k |
| DEAN INVESTMENT ASSOCIATES, LLC | New | +60.0k |
| STATE STREET CORP | Added | +54.2k |
| NEUBERGER BERMAN GROUP LLC | Added | +54.2k |
| Dean Capital Management | New | +43.5k |
| Legal & General Group Plc | Added | +31.7k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +30.6k |
Biggest sellers
| TSP Capital Management Group, LLC | Sold out | -210.3k |
| JANE STREET GROUP, LLC | Reduced | -82.2k |
| HRT FINANCIAL LP | Sold out | -67.5k |
| GOLDMAN SACHS GROUP INC | Reduced | -45.1k |
| MILLENNIUM MANAGEMENT LLC | Sold out | -40.8k |
| NFJ INVESTMENT GROUP, LLC | Sold out | -38.2k |
| MIROVA | Reduced | -36.9k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -36.2k |
| BANK OF AMERICA CORP /DE/ | Reduced | -28.9k |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | -25.6k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $1.2m21.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $831.2k14.8k shares |
| JANE STREET GROUP, LLC | Added | $634.6k11.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $22.5k400 shares |
| GROUP ONE TRADING LLC | New | $5.6k100 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $567.2k10.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $5.6k100 shares |
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.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution -1.9 pts · filed 2026-04-24 | 16.1% |
| T. Rowe Price Investment Management, Inc. 13G · institution filed 2025-11-14 | 9.1% |
| Neuberger Berman Group LLC 13G · institution new · filed 2025-10-14 | 5.6% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $9.9k | — |
| Q1 2025 | 0 | — | 2 | $263.5k | — |
| Q2 2025 | 0 | — | 1 | $40.3k | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 1 | $33.1k | — |
| Q1 2026 | 1 | $108.6k | 2 | $23.8k | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 1 | $35.4k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-07 | Ginegaw Lorrie Beth VP, Human Resources | Sold | $35.4k615 shares |
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
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 3.1m $176.0m | Added +117.9k |
| T. Rowe Price Investment Management, Inc. 0.06% of their portfolio | 1.7m $98.1m | Added +4.5k |
| NEUBERGER BERMAN GROUP LLC 0.06% of their portfolio | 1.6m $90.1m | Added +54.2k |
| MORGAN STANLEY 0.00% of their portfolio | 1.1m $61.9m | Reduced -5.9k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 802.3k $45.1m | Reduced -25.6k |
| STATE STREET CORP 0.00% of their portfolio | 798.2k $44.8m | Added +54.2k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 513.8k $28.9m | Added +25.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 500.6k $28.1m | Added +30.6k |
| Legal & General Group Plc 0.01% of their portfolio | 437.5k $24.6m | Added +31.7k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 348.4k $19.6m | Added +2.7k |
| Invesco Ltd. 0.00% of their portfolio | 280.2k $15.7m | Reduced -10.4k |
| Ledgewood Wealth Advisors, LLC 7.57% of their portfolio | 254.0k $14.3m | Unchanged |
| NORTHERN TRUST CORP 0.00% of their portfolio | 222.7k $12.5m | Added +24.7k |
| TSP Capital Management Group, LLC 2.84% of their portfolio | 211.0k $11.9m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 193.7k $10.9m | Added +1.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 179.0k $10.1m | Added +1.4k |
| Zimmer Partners, LP 0.23% of their portfolio | 176.9k $9.9m | Unchanged |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 163.0k $9.2m | Added +97.5k |
| MIROVA 0.33% of their portfolio | 159.1k $8.9m | Reduced -36.9k |
| FIRST MANHATTAN CO. LLC. 0.02% of their portfolio | 141.6k $8.0m | Reduced -2.3k |
| ProShare Advisors LLC 0.01% of their portfolio | 131.1k $7.4m | Added +12.4k |
| Jupiter Topco LLC 0.00% of their portfolio | 129.3k $7.3m | First filing |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 123.1k $6.9m | Added +4.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 110.8k $6.2m | Reduced -36.2k |
| CRAMER ROSENTHAL MCGLYNN LLC 0.31% of their portfolio | 108.2k $6.1m | Added +14.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 107.5k $6.0m | Added +2.1k |
| NUANCE INVESTMENTS, LLC 0.82% of their portfolio | 85.8k $4.8m | Added +28.6k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 84.7k $4.8m | Reduced -45.1k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 83.6k $4.7m | Added +66.7k |
| Public Sector Pension Investment Board 0.01% of their portfolio | 64.0k $3.6m | Reduced -1.7k |
| DEAN INVESTMENT ASSOCIATES, LLC 0.44% of their portfolio | 60.0k $3.4m | New |
| Nuveen, LLC 0.00% of their portfolio | 57.1k $3.2m | Added +17.9k |
| Penn Capital Management Company, LLC 0.19% of their portfolio | 54.3k $3.0m | Added +713 |
| Quantinno Capital Management LP 0.00% of their portfolio | 51.1k $2.9m | Added +13.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 44.4k $2.5m | Reduced -7.7k |
| Dean Capital Management 0.89% of their portfolio | 43.5k $2.4m | New |
| EXCHANGE TRADED CONCEPTS, LLC 0.01% of their portfolio | 42.9k $2.4m | Added +796 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 41.7k $2.3m | Reduced -13.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 40.4k $2.3m | Reduced -28.9k |
| UBS Group AG 0.00% of their portfolio | 39.5k $2.2m | Added +3.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 37.4k $2.1m | Added +5.6k |
| Swiss National Bank 0.00% of their portfolio | 37.3k $2.1m | Added +1.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 37.0k $2.1m | Reduced -1.5k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 36.2k $2.0m | Added +9.8k |
| Baird Financial Group, Inc. 0.00% of their portfolio | 29.9k $1.7m | Reduced -1.5k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 29.7k $1.7m | Reduced -3.0k |
| TD Asset Management Inc 0.00% of their portfolio | 29.0k $1.6m | Unchanged |
| NORTHSTAR ASSET MANAGEMENT INC 0.46% of their portfolio | 28.0k $1.6m | Reduced -10.3k |
| OPPENHEIMER & CO INC 0.02% of their portfolio | 27.7k $1.6m | Reduced -110 |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 25.9k $1.3m | Added +4.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 25.5k $1.4m | Reduced -5.9k |
| HighTower Advisors, LLC 0.00% of their portfolio | 24.4k $1.4m | Added +35 |
| SG Americas Securities, LLC 0.00% of their portfolio | 23.3k $1.3m | Reduced -5.4k |
| Legato Capital Management LLC 0.11% of their portfolio | 22.7k $1.3m | New |
| LPL Financial LLC 0.00% of their portfolio | 22.6k $1.3m | Reduced -2.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 21.7k $1.2m | Added +5.3k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 21.2k $1.2m | Added +8.9k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 20.9k $1.2m | Added +2.6k |
| GABELLI FUNDS LLC 0.01% of their portfolio | 19.4k $1.1m | Added +1.0k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 19.3k $1.1m | Added +8.8k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 18.9k $1.1m | Added +390 |
| Corient Private Wealth LP 0.00% of their portfolio | 17.6k $987.9k | Added +978 |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 17.4k $975.0k | Reduced -32 |
| Odyssean, LLC 0.16% of their portfolio | 17.2k $967.5k | Added +9.8k |
| Private Advisor Group, LLC 0.00% of their portfolio | 16.3k $914.0k | Added +4.3k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 16.2k $908.6k | Added +288 |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 15.7k $882.6k | New |
| Magellan Asset Management Ltd 0.02% of their portfolio | 15.5k $870.6k | Unchanged |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 15.3k $857.3k | Added +3.6k |
| STOREBRAND ASSET MANAGEMENT AS 0.00% of their portfolio | 14.7k $826.4k | Reduced -118 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 13.9k $783.2k | Reduced -306 |
| CenterBook Partners LP 0.04% of their portfolio | 13.6k $766.0k | Reduced -8.6k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 13.2k $739.6k | Added +209 |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 12.2k $687.0k | Reduced -4.8k |
| Inspire Investing, LLC 0.03% of their portfolio | 12.0k $673.5k | Added +2.1k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 12.0k $671.5k | Added +6.7k |
| Mariner, LLC 0.00% of their portfolio | 11.7k $659.0k | New |
| CITIGROUP INC 0.00% of their portfolio | 11.2k $631.5k | Added +5.9k |
| Brevan Howard Capital Management LP 0.01% of their portfolio | 11.2k $629.1k | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 10.9k $613.7k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 10.9k $609.7k | Added +500 |
| Main Street Financial Solutions, LLC 0.04% of their portfolio | 10.6k $594.1k | Added +11 |
| Tidal Investments LLC 0.00% of their portfolio | 10.5k $590.5k | Added +1.9k |
| Atom Investors LP 0.05% of their portfolio | 9.8k $547.9k | Added +3.8k |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 9.3k $524.7k | Added +10 |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 9.2k $517.1k | Added +271 |
| Illinois Municipal Retirement Fund 0.01% of their portfolio | 9.2k $514.4k | Reduced -605 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 9.0k $506.0k | Added +578 |
| Parcion Private Wealth LLC 0.03% of their portfolio | 8.5k $474.9k | Added +339 |
| Amundi 0.00% of their portfolio | 8.3k $464.6k | Added +2.8k |
| Louisiana State Employees Retirement System 0.01% of their portfolio | 8.2k $460.5k | Added +100 |
| XTX Topco Ltd 0.01% of their portfolio | 7.8k $436.8k | Reduced -684 |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 7.4k $418.3k | Added +1.9k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 7.2k $404.2k | Unchanged |
| Cerity Partners LLC 0.00% of their portfolio | 7.0k $391.4k | Added +1.2k |
| Cullen Capital Management, LLC 0.00% of their portfolio | 6.9k $389.9k | Added +1.7k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 6.9k $386.3k | Added +356 |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 6.7k $373.0k | Reduced -2.9k |
| BLACKHILL CAPITAL INC 0.02% of their portfolio | 6.7k $374.4k | Unchanged |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 6.1k $343.9k | Added +1.1k |