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
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
Q4 2015Renaissance Technologies LLCSell-8,000301,600$8,004
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.