MARINE PRODUCTS CORP (MPX) Institutional Ownership Changes & 13F Activity

MARINE PRODUCTS CORP (MPX). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Renaissance Technologies LLCSell-1,80066,002$479,835
Q4 2025Renaissance Technologies LLCSell-3,30067,802$593,946
Q3 2025Renaissance Technologies LLCBuy60071,102$630,675
Q2 2025Renaissance Technologies LLCBuy60070,502$599,972
Q1 2025Renaissance Technologies LLCSell-70069,902$586,478
Q4 2024Renaissance Technologies LLCSell-3,10070,602$647,420
Q3 2024Renaissance Technologies LLCBuy5,10073,702$714,172
Q2 2024Renaissance Technologies LLCBuy20068,602$692,880
Q1 2024Renaissance Technologies LLCSell-8,80068,402$804
Q4 2023Renaissance Technologies LLCBuy3,60077,202$880
Q3 2023Renaissance Technologies LLCBuy11,50073,602$1,046
Q2 2023Renaissance Technologies LLCBuy8,60062,102$1,047
Q1 2023Renaissance Technologies LLCBuy1,60053,502$706
Q4 2022Renaissance Technologies LLCSell-90051,902$611
Q3 2022Renaissance Technologies LLCSell-4,40052,802$447
Q2 2022Renaissance Technologies LLCSell-60057,202$544
Q1 2022Renaissance Technologies LLCSell-7,80057,802$668
Q4 2021Renaissance Technologies LLCSell-16,20065,602$820
Q3 2021Renaissance Technologies LLCSell-20,10081,802$1,023
Q2 2021Renaissance Technologies LLCSell-27,700101,902$1,573
Q1 2021Renaissance Technologies LLCSell-1,300129,602$2,109
Q4 2020Renaissance Technologies LLCSell-35,800130,902$1,903
Q3 2020Renaissance Technologies LLCSell-50,200166,702$2,607
Q2 2020Renaissance Technologies LLCSell-29,900216,902$3,004
Q1 2020Renaissance Technologies LLCBuy6,400246,802$1,994
Q4 2019Renaissance Technologies LLCSell-100240,402$3,462
Q3 2019Renaissance Technologies LLCBuy6,100240,502$3,406
Q2 2019Renaissance Technologies LLCSell-6,800234,402$3,619
Q1 2019Renaissance Technologies LLCSell-15,100241,202$3,249
Q4 2018Renaissance Technologies LLCBuy15,302256,302$4,334

Frequently asked questions about MPX activity

  • Which institutional owners are buying MPX?

    Institutional owners buying MPX 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 MPX activity?

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

  • Is institutional interest in MPX increasing?

    Institutional interest in MPX 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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