MSEX Middlesex Water Company
Middlesex Water Company (MSEX) Institutional Ownership
What the institutions did with MSEX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 3.1M | 20.0% |
| T. Rowe Price Investment Management, Inc. | 1.7M | 11.1% |
| NEUBERGER BERMAN GROUP LLC | 1.6M | 10.2% |
| MORGAN STANLEY | 1.1M | 7.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 802.3K | 5.1% |
| STATE STREET CORP | 798.2K | 5.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 513.8K | 3.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 500.6K | 3.2% |
| Legal & General Group Plc | 437.5K | 2.8% |
| DIMENSIONAL FUND ADVISORS LP | 348.4K | 2.2% |
| Invesco Ltd. | 280.2K | 1.8% |
| Ledgewood Wealth Advisors, LLC | 254.0K | 1.6% |
| NORTHERN TRUST CORP | 222.7K | 1.4% |
| TSP Capital Management Group, LLC | 211.0K | 1.3% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 193.7K | 1.2% |
| Bank of New York Mellon Corp | 179.0K | 1.1% |
| Zimmer Partners, LP | 176.9K | 1.1% |
| TWO SIGMA INVESTMENTS, LP | 163.0K | 1.0% |
| MIROVA | 159.1K | 1.0% |
| FIRST MANHATTAN CO. LLC. | 141.6K | 0.9% |
| ProShare Advisors LLC | 131.1K | 0.8% |
| Jupiter Topco LLC | 129.3K | 0.8% |
| VANGUARD FIDUCIARY TRUST CO | 123.1K | 0.8% |
| RENAISSANCE TECHNOLOGIES LLC | 110.8K | 0.7% |
| CRAMER ROSENTHAL MCGLYNN LLC | 108.2K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Increased | 3.0M | 3.1M | +117.9K |
| TWO SIGMA INVESTMENTS, LP | Increased | 65.5K | 163.0K | +97.5K |
| JANE STREET GROUP, LLC | Reduced | 86.7K | 4.6K | -82.2K |
| HRT FINANCIAL LP | Sold Out | 67.5K | 0 | -67.5K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 16.9K | 83.6K | +66.7K |
| DEAN INVESTMENT ASSOCIATES, LLC | New | 0 | 60.0K | +60.0K |
| STATE STREET CORP | Increased | 744.1K | 798.2K | +54.2K |
| NEUBERGER BERMAN GROUP LLC | Increased | 1.5M | 1.6M | +54.2K |
| GOLDMAN SACHS GROUP INC | Reduced | 129.8K | 84.7K | -45.1K |
| Dean Capital Management | New | 0 | 43.5K | +43.5K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 40.8K | 0 | -40.8K |
| NFJ INVESTMENT GROUP, LLC | Sold Out | 38.2K | 0 | -38.2K |
| MIROVA | Reduced | 196.0K | 159.1K | -36.9K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 147.0K | 110.8K | -36.2K |
| Legal & General Group Plc | Increased | 405.8K | 437.5K | +31.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 469.9K | 500.6K | +30.6K |
| BANK OF AMERICA CORP /DE/ | Reduced | 69.3K | 40.4K | -28.9K |
| NUANCE INVESTMENTS, LLC | Increased | 57.2K | 85.8K | +28.6K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 488.1K | 513.8K | +25.7K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 828.0K | 802.3K | -25.6K |
| NORTHERN TRUST CORP | Increased | 198.1K | 222.7K | +24.7K |
| Legato Capital Management LLC | New | 0 | 22.7K | +22.7K |
| Squarepoint Ops LLC | Sold Out | 21.6K | 0 | -21.6K |
| Nuveen, LLC | Increased | 39.2K | 57.1K | +17.9K |
| AMERICAN CENTURY COMPANIES INC | New | 0 | 15.7K | +15.7K |
| CRAMER ROSENTHAL MCGLYNN LLC | Increased | 93.7K | 108.2K | +14.5K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | 55.5K | 41.7K | -13.8K |
| Quantinno Capital Management LP | Increased | 37.4K | 51.1K | +13.8K |
| ProShare Advisors LLC | Increased | 118.7K | 131.1K | +12.4K |
| Mariner, LLC | New | 0 | 11.7K | +11.7K |
| Brevan Howard Capital Management LP | New | 0 | 11.2K | +11.2K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | 0 | 10.9K | +10.9K |
| Abacus Wealth Partners, LLC | Sold Out | 10.8K | 0 | -10.8K |
| Invesco Ltd. | Reduced | 290.6K | 280.2K | -10.4K |
| NORTHSTAR ASSET MANAGEMENT INC | Reduced | 38.2K | 28.0K | -10.3K |
| Odyssean, LLC | Increased | 7.4K | 17.2K | +9.8K |
| D. E. Shaw & Co., Inc. | Increased | 26.4K | 36.2K | +9.8K |
| RAYMOND JAMES FINANCIAL INC | Increased | 12.3K | 21.2K | +8.9K |
| WELLS FARGO & COMPANY/MN | Increased | 10.4K | 19.3K | +8.8K |
| CenterBook Partners LP | Reduced | 22.2K | 13.6K | -8.6K |
| RHUMBLINE ADVISERS | Reduced | 52.1K | 44.4K | -7.7K |
| Russell Investments Group, Ltd. | Increased | 5.2K | 12.0K | +6.7K |
| FIRST TRUST ADVISORS LP | Sold Out | 6.4K | 0 | -6.4K |
| CITIGROUP INC | Increased | 5.3K | 11.2K | +5.9K |
| MORGAN STANLEY | Reduced | 1.1M | 1.1M | -5.9K |
| JPMORGAN CHASE & CO | Reduced | 31.4K | 25.5K | -5.9K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 31.8K | 37.4K | +5.6K |
| Quadrature Capital Ltd | Sold Out | 5.6K | 0 | -5.6K |
| MERCER GLOBAL ADVISORS INC /ADV | New | 0 | 5.5K | +5.5K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 9.4K | 3.9K | -5.5K |
| SG Americas Securities, LLC | Reduced | 28.7K | 23.3K | -5.4K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Increased | 16.4K | 21.7K | +5.3K |
| MANGROVE PARTNERS IM, LLC | Sold Out | 5.3K | 0 | -5.3K |
| ALLIANCEBERNSTEIN L.P. | Increased | 21.0K | 25.9K | +4.9K |
| Thrivent Financial for Lutherans | Reduced | 17.1K | 12.2K | -4.8K |
| Cambridge Investment Research Advisors, Inc. | Sold Out | 4.7K | 0 | -4.7K |
| INTECH INVESTMENT MANAGEMENT LLC | Sold Out | 4.6K | 0 | -4.6K |
| T. Rowe Price Investment Management, Inc. | Increased | 1.7M | 1.7M | +4.5K |
| Point72 Asset Management, L.P. | Sold Out | 4.4K | 0 | -4.4K |
| Dynamic Technology Lab Private Ltd | New | 0 | 4.4K | +4.4K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.