MIDDLESEX WATER CO (MSEX) Institutional Buying Activity

Institutional investors tracked by InsiderSet increased exposure to MIDDLESEX WATER CO (MSEX) during the quarter ended March 31, 2026 through a combination of new purchases and expanded existing positions disclosed in SEC Form 13F filings.

The largest institutional buyer of MSEX during the latest reporting period was Renaissance Technologies LLC, which increased its reported MSEX position by approximately $1.23M based on quarter-end filing values. Several additional hedge funds and long-term asset managers also reported meaningful increases in MSEX exposure during the quarter.

Institutional buying activity can provide insight into investor conviction, sector allocation trends, and smart money positioning toward MIDDLESEX WATER CO (MSEX). InsiderSet tracks quarterly accumulation trends, new institutional positions, ownership increases, and estimated performance of newly disclosed holdings using SEC filing data and recent market prices.

The investors highlighted on this page collectively added approximately $4.32M in reported MSEX exposure during the latest filing period, reflecting continued institutional interest in MIDDLESEX WATER CO's growth initiatives and strategic positioning.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCBuy17,800147,013$7,652,027
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
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
Q4 2022Renaissance Technologies LLCBuy57,200226,800$17,842
Q3 2018Renaissance Technologies LLCBuy1,300599,900$29,047
Q1 2018Renaissance Technologies LLCBuy52,100598,600$21,969
Q4 2017Renaissance Technologies LLCBuy7,700546,500$21,811
Q3 2017Renaissance Technologies LLCBuy10,400538,800$21,159
Q2 2017Renaissance Technologies LLCBuy32,400528,400$20,925
Q1 2017Renaissance Technologies LLCBuy40,800496,000$18,327
Q4 2016Renaissance Technologies LLCBuy39,600455,200$19,546
Q3 2016Renaissance Technologies LLCBuy54,600415,600$14,646
Q2 2016Renaissance Technologies LLCBuy13,800361,000$15,660
Q1 2016Renaissance Technologies LLCBuy45,600347,200$10,711
Q3 2015Renaissance Technologies LLCBuy86,198309,600$7,381
Q2 2015Renaissance Technologies LLCBuy41,402223,402$5,040
Q1 2015Renaissance Technologies LLCBuy29,664182,000$4,142
Q4 2014Renaissance Technologies LLCBuy18,336152,336$3,513
Q3 2014Renaissance Technologies LLCBuy74,822134,000$2,626
Q2 2014Renaissance Technologies LLCBuy39,22159,178$1,253
Q1 2014Renaissance Technologies LLCBuy19,95719,957$435

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.

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