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 ($102.5k this quarter). Holder counts are more reliable. Shares outstanding: 18.3m as of 2025-10-30, 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 ≈ $54.12. Options: 2 managers hold calls ($773.8k notional), 1 hold puts ($43.0k).
Trends to Q3 2025
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 91 | 77 |
| Q1 2024 | 110 | 67 |
| Q2 2024 | 92 | 87 |
| Q3 2024 | 72 | 98 |
| Q4 2024 | 90 | 76 |
| Q1 2025 | 89 | 97 |
| Q2 2025 | 117 | 78 |
| Q3 2025 | 112 | 85 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2024 | $310.3k | $52.6k | 0.17 |
| Q1 2025 | $788.0k | $83.5k | 0.11 |
| Q2 2025 | $720.0k | $43.0k | 0.06 |
| Q3 2025 | $773.8k | $43.0k | 0.06 |
Biggest buyers
| NEUBERGER BERMAN GROUP LLC | New | +1.0m |
| T. Rowe Price Investment Management, Inc. | Added | +123.5k |
| TSP Capital Management Group, LLC | New | +119.2k |
| Legal & General Group Plc | Added | +94.1k |
| BlackRock, Inc. | Added | +60.9k |
| AQR CAPITAL MANAGEMENT LLC | Added | +32.6k |
| Zimmer Partners, LP | Added | +32.5k |
| JPMORGAN CHASE & CO | Added | +30.9k |
| Baird Financial Group, Inc. | New | +29.4k |
| UBS Group AG | Added | +28.3k |
Biggest sellers
| FIRST TRUST ADVISORS LP | Reduced | -657.0k |
| TSP Capital Management Group, LLC | Sold out | -111.7k |
| VANGUARD GROUP INC | Reduced | -50.8k |
| Invesco Ltd. | Reduced | -37.0k |
| DEPRINCE RACE & ZOLLO INC | Sold out | -31.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -28.8k |
| Squarepoint Ops LLC | Sold out | -27.4k |
| Bank of New York Mellon Corp | Reduced | -26.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -26.7k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | Reduced | -22.4k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $719.8k13.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $54.0k1.0k shares |
Biggest puts
| SIMPLEX TRADING, LLC | Unchanged | $43.0k800 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 in Q3 2025
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 2023 | 0 | — | 2 | $111.7k | — |
| Q1 2024 | 1 | $82.7k | 0 | — | — |
| Q2 2024 | 0 | — | 1 | $49.0k | — |
| Q3 2024 | 0 | — | 1 | $31.0k | — |
| Q4 2024 | 0 | — | 1 | $9.9k | — |
| Q1 2025 | 0 | — | 2 | $263.5k | — |
| Q2 2025 | 0 | — | 1 | $40.3k | — |
| Q3 2025 | 0 | — | 0 | — | — |
None reported in Q3 2025.
Holders, Q3 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 3.4m $181.6m | Added +60.9k |
| T. Rowe Price Investment Management, Inc. 0.05% of their portfolio | 1.6m $88.4m | Added +123.5k |
| VANGUARD GROUP INC 0.00% of their portfolio | 1.4m $74.3m | Reduced -50.8k |
| NEUBERGER BERMAN GROUP LLC 0.04% of their portfolio | 1.0m $54.7m | New |
| STATE STREET CORP 0.00% of their portfolio | 702.5k $38.0m | Added +11.3k |
| MORGAN STANLEY 0.00% of their portfolio | 503.1k $27.2m | Added +5.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 459.4k $24.9m | Added +15.5k |
| Legal & General Group Plc 0.00% of their portfolio | 379.8k $20.6m | Added +94.1k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 347.2k $18.8m | Reduced -9.1k |
| Invesco Ltd. 0.00% of their portfolio | 290.3k $15.7m | Reduced -37.0k |
| Ledgewood Wealth Advisors, LLC 8.14% of their portfolio | 254.0k $13.7m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 245.3k $13.3m | Added +3.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 215.0k $11.6m | Added +12.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 204.7k $11.1m | Added +22.9k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 202.3k $10.9m | Reduced -305 |
| Thematics Asset Management 0.42% of their portfolio | 171.0k $9.3m | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 166.7k $9.0m | Reduced -26.8k |
| Zimmer Partners, LP 0.20% of their portfolio | 154.6k $8.4m | Added +32.5k |
| FIRST MANHATTAN CO. LLC. 0.02% of their portfolio | 147.4k $8.0m | Reduced -11.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 126.3k $6.8m | Added +23.9k |
| ProShare Advisors LLC 0.01% of their portfolio | 119.4k $6.5m | Added +8.2k |
| TSP Capital Management Group, LLC 1.73% of their portfolio | 119.2k $6.5m | New |
| CRAMER ROSENTHAL MCGLYNN LLC 0.38% of their portfolio | 109.4k $5.9m | Reduced -1.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 81.6k $4.4m | Reduced -6.2k |
| UBS Group AG 0.00% of their portfolio | 78.5k $4.3m | Added +28.3k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 78.2k $4.2m | Added +9.2k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 76.7k $4.2m | Added +3.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 70.6k $3.8m | Added +30.9k |
| Public Sector Pension Investment Board 0.01% of their portfolio | 70.3k $3.8m | Added +9.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 54.2k $2.9m | Added +715 |
| NORTHSTAR ASSET MANAGEMENT INC 0.73% of their portfolio | 51.8k $2.8m | Added +17.7k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 48.0k $2.6m | Added +32.6k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 47.8k $2.6m | Added +5.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 46.0k $2.5m | Reduced -28.8k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 43.2k $2.3m | Added +2.2k |
| EXCHANGE TRADED CONCEPTS, LLC 0.02% of their portfolio | 40.2k $2.2m | Added +27.0k |
| NFJ INVESTMENT GROUP, LLC 0.07% of their portfolio | 40.2k $2.2m | Added +1.1k |
| Nuveen, LLC 0.00% of their portfolio | 39.7k $2.1m | Added +820 |
| Penn Capital Management Company, LLC 0.17% of their portfolio | 39.7k $2.1m | Added +22.4k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 36.8k $2.0m | Added +7.9k |
| Swiss National Bank 0.00% of their portfolio | 34.7k $1.9m | Added +500 |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 33.8k $1.8m | Added +1.5k |
| Baird Financial Group, Inc. 0.00% of their portfolio | 29.4k $1.6m | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 28.6k $1.6m | Added +16.3k |
| LPL Financial LLC 0.00% of their portfolio | 28.4k $1.5m | Added +938 |
| TD Asset Management Inc 0.00% of their portfolio | 27.1k $1.5m | Added +1.5k |
| OPPENHEIMER & CO INC 0.02% of their portfolio | 26.8k $1.4m | Added +730 |
| SG Americas Securities, LLC 0.01% of their portfolio | 26.5k $1.4m | Added +586 |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 25.6k $1.4m | New |
| BARCLAYS PLC 0.00% of their portfolio | 25.2k $1.4m | Reduced -8.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 24.3k $1.3m | Added +1.7k |
| HighTower Advisors, LLC 0.00% of their portfolio | 23.1k $1.2m | Added +3.8k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 23.0k $1.2m | Added +400 |
| Catalyst Funds Management Pty Ltd 0.19% of their portfolio | 22.9k $1.2m | New |
| Quantinno Capital Management LP 0.00% of their portfolio | 22.4k $1.2m | Added +9.8k |
| GABELLI FUNDS LLC 0.01% of their portfolio | 18.4k $993.1k | Unchanged |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 17.8k $965.3k | Reduced -555 |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 17.8k $964.0k | Reduced -10.4k |
| STOREBRAND ASSET MANAGEMENT AS 0.00% of their portfolio | 17.7k $959.1k | Unchanged |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 17.3k $937.2k | Added +2.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 16.5k $892.2k | Added +1 |
| CenterBook Partners LP 0.04% of their portfolio | 15.8k $857.2k | Reduced -10.3k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 15.8k $857.1k | Added +1.7k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 15.5k $839.3k | Reduced -657 |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 15.1k $817.3k | Added +1.4k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 15.0k $809.5k | Reduced -2.3k |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.05% of their portfolio | 13.6k $737.5k | New |
| Manchester Capital Management LLC 0.10% of their portfolio | 13.5k $731.4k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 12.8k $694.0k | Added +5.8k |
| Magellan Asset Management Ltd 0.01% of their portfolio | 12.4k $672.0k | Added +360 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 12.4k $669.1k | Reduced -1.0k |
| Cerity Partners LLC 0.00% of their portfolio | 12.1k $656.4k | Added +755 |
| Private Advisor Group, LLC 0.00% of their portfolio | 11.7k $631.4k | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 10.8k $586.7k | Reduced -20.7k |
| Main Street Financial Solutions, LLC 0.04% of their portfolio | 10.5k $569.7k | Added +60 |
| MetLife Investment Management, LLC 0.00% of their portfolio | 10.5k $566.7k | Unchanged |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 10.5k $566.3k | Reduced -227 |
| Corient Private Wealth LP 0.00% of their portfolio | 10.2k $550.9k | Reduced -9.8k |
| Verition Fund Management LLC 0.00% of their portfolio | 10.1k $547.4k | Added +4.7k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 9.9k $536.0k | Added +5.2k |
| State of Alaska, Department of Revenue 0.01% of their portfolio | 9.6k $518.0k | Reduced -1.1k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 9.4k $508.2k | Reduced -1.6k |
| Illinois Municipal Retirement Fund 0.01% of their portfolio | 9.4k $508.1k | Reduced -323 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 9.0k $488.0k | Unchanged |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 9.0k $486.0k | Reduced -69 |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 9.0k $485.8k | Unchanged |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 8.8k $477.4k | Reduced -653 |
| Mariner, LLC 0.00% of their portfolio | 8.8k $475.4k | Added +4.8k |
| Tidal Investments LLC 0.00% of their portfolio | 8.7k $470.5k | Reduced -426 |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 8.6k $465.0k | Reduced -74 |
| Inspire Investing, LLC 0.04% of their portfolio | 8.4k $453.0k | Added +1.1k |
| Creative Planning 0.00% of their portfolio | 8.3k $451.8k | Added +3.6k |
| Parcion Private Wealth LLC 0.03% of their portfolio | 8.3k $449.8k | Added +296 |
| Louisiana State Employees Retirement System 0.01% of their portfolio | 8.3k $449.2k | Reduced -100 |
| Glenmede Investment Management, LP 0.00% of their portfolio | 7.9k $425.4k | Reduced -31 |
| Quantbot Technologies LP 0.01% of their portfolio | 7.6k $410.8k | Added +7.3k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 7.3k $395.5k | Unchanged |
| QUADRANT CAPITAL GROUP LLC 0.01% of their portfolio | 7.3k $395.2k | Reduced -220 |
| Ethic Inc. 0.01% of their portfolio | 7.2k $391.8k | Reduced -4.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 7.0k $378.7k | Reduced -2.9k |