MIDDLESEX WATER CO (MSEX) Stock Institutional Trading Activity


MIDDLESEX WATER CO (MSEX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC and Sequoia Financial Advisors. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCSell-85,800129,213$6,514,919
Q3 2025Renaissance Technologies LLCBuy12,100215,013$11,636,504
Q2 2025Renaissance Technologies LLCBuy22,500202,913$10,993,826
Q1 2025Renaissance Technologies LLCBuy19,200180,413$11,564,473
Q4 2024Renaissance Technologies LLCSell-26,387161,213$8,484,640
Q3 2024Renaissance Technologies LLCSell-75,100187,600$12,239,024
Q2 2024Renaissance Technologies LLCSell-22,000262,700$13,728,702
Q1 2024Renaissance Technologies LLCBuy78,300284,700$14,947
Q1 2024Sequoia Financial AdvisorsBuy5,0745,074$266,385
Q4 2023Renaissance Technologies LLCBuy4,300206,400$13,544
Q3 2023Renaissance Technologies LLCBuy5,484202,100$13,389
Q2 2023Renaissance Technologies LLCSell-14,484196,616$15,859
Q1 2023Renaissance Technologies LLCSell-15,700211,100$16,491
Q4 2022Renaissance Technologies LLCBuy57,200226,800$17,842
Q3 2022Renaissance Technologies LLCSell-37,900169,600$13,093
Q2 2022Renaissance Technologies LLCSell-7,800207,500$18,194
Q1 2022Renaissance Technologies LLCSell-24,800215,300$22,643
Q4 2021Renaissance Technologies LLCSell-31,600240,100$28,884
Q3 2021Renaissance Technologies LLCSell-39,100271,700$27,925
Q2 2021Renaissance Technologies LLCSell-38,800310,800$25,402
Q1 2021Renaissance Technologies LLCSell-86,000349,600$27,625
Q4 2020Renaissance Technologies LLCSell-29,400435,600$31,568
Q3 2020Renaissance Technologies LLCSell-27,800465,000$28,900
Q2 2020Renaissance Technologies LLCSell-35,900492,800$33,106
Q1 2020Renaissance Technologies LLCSell-13,400528,700$31,785
Q4 2019Renaissance Technologies LLCSell-25,200542,100$34,461
Q3 2019Renaissance Technologies LLCSell-600567,300$36,852
Q2 2019Renaissance Technologies LLCSell-21,900567,900$33,648
Q1 2019Renaissance Technologies LLCSell-9,700589,800$33,023
Q4 2018Renaissance Technologies LLCSell-400599,500$31,983

Frequently asked questions about MSEX activity

  • Which institutional owners are buying MSEX?

    Institutional owners buying MSEX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MSEX activity?

    "Buy" means an investor increased their reported position in MSEX compared to the prior reporting period. This reflects growing exposure to MIDDLESEX WATER CO (MSEX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MSEX increasing?

    Institutional interest in MSEX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.