DORMAN PRODUCTS INC (DORM) Stock Institutional Trading Activity


DORMAN PRODUCTS INC (DORM) 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, Third Avenue Management, Bares Capital Management, and Olstein Capital Management. 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 LLCBuy4,50091,900$11,321,161
Q3 2025Renaissance Technologies LLCSell-18,70087,400$13,623,912
Q2 2025Renaissance Technologies LLCBuy21,900106,100$13,015,287
Q1 2025Renaissance Technologies LLCBuy55,10084,200$10,149,468
Q4 2024Renaissance Technologies LLCBuy40029,100$3,769,905
Q3 2024Renaissance Technologies LLCBuy3,50028,700$3,246,544
Q2 2024Renaissance Technologies LLCBuy5,00025,200$2,305,296
Q1 2024Renaissance Technologies LLCBuy4,40020,200$1,947
Q3 2023Renaissance Technologies LLCSell-7,80015,800$1,197
Q2 2023Renaissance Technologies LLCSell-14,30023,600$1,860
Q1 2023Renaissance Technologies LLCSell-19,10037,900$3,269
Q4 2022Renaissance Technologies LLCSell-83,80057,000$4,610
Q3 2022Renaissance Technologies LLCBuy55,400140,800$11,562
Q2 2022Renaissance Technologies LLCBuy60,20085,400$9,369
Q1 2022Renaissance Technologies LLCBuy21,82025,200$2,395
Q4 2021Renaissance Technologies LLCSell-9,3203,380$382
Q3 2021Renaissance Technologies LLCSell-16,80012,700$1,202
Q2 2021Renaissance Technologies LLCSell-26,80029,500$3,058
Q1 2021Renaissance Technologies LLCBuy21,20056,300$5,779
Q4 2020Renaissance Technologies LLCBuy29,30035,100$3,047
Q4 2020Third Avenue ManagementSell-17,52226,078$2,265
Q3 2020Renaissance Technologies LLCSell-69,3005,800$524
Q4 2017Renaissance Technologies LLCSell-151,50075,100$4,592
Q2 2017Third Avenue ManagementSell-14,80043,600$3,609
Q1 2017Third Avenue ManagementSell-23,10058,400$4,796
Q4 2016Third Avenue ManagementSell-18,19081,500$5,954
Q2 2016Third Avenue ManagementSell-10,03899,690$5,702
Q1 2016Third Avenue ManagementSell-45,152109,728$5,971
Q4 2015Third Avenue ManagementSell-1,293154,880$7,352
Q3 2015Third Avenue ManagementBuy8,040156,173$7,948

Frequently asked questions about DORM activity

  • Which institutional owners are buying DORM?

    Institutional owners buying DORM 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 DORM activity?

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

  • Is institutional interest in DORM increasing?

    Institutional interest in DORM 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.