TREX COMPANY INC (TREX) Institutional Ownership Changes & 13F Activity

TREX COMPANY INC (TREX) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Disciplined Growth Investors, Renaissance Technologies LLC, Mairs & Power Growth Fund, Alapocas Investment Partners, and Sequoia Financial Advisors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2016Disciplined Growth InvestorsBuy325379,292$18,179
Q4 2015Renaissance Technologies LLCSell-212,39677,200$2,937
Q4 2015Disciplined Growth InvestorsSell-2,400378,967$14,416
Q3 2015Renaissance Technologies LLCBuy189,196289,596$9,652
Q3 2015Disciplined Growth InvestorsBuy6,350381,367$12,711
Q2 2015Renaissance Technologies LLCSell-86,100100,400$4,963
Q2 2015Disciplined Growth InvestorsBuy3,750375,017$18,537
Q1 2015Renaissance Technologies LLCBuy98,351186,500$10,170
Q1 2015Disciplined Growth InvestorsSell-2,675371,267$20,245
Q4 2014Disciplined Growth InvestorsSell-17,800373,942$15,922
Q4 2014Renaissance Technologies LLCSell-5,55188,149$3,753
Q3 2014Disciplined Growth InvestorsBuy164,846391,742$13,543
Q3 2014Renaissance Technologies LLCBuy72,10093,700$3,239
Q2 2014Renaissance Technologies LLCSell-131,60221,600$623
Q2 2014Disciplined Growth InvestorsSell-7,704226,896$18,045
Q1 2014Renaissance Technologies LLCBuy57,502153,202$11,208
Q1 2014Disciplined Growth InvestorsBuy4,904234,600$11,538
Q4 2013Renaissance Technologies LLCSell-25,50095,700$7,611
Q4 2013Disciplined Growth InvestorsSell-9,504229,696$18,268
Q3 2013Renaissance Technologies LLCSell-134,900121,200$6,003
Q3 2013Disciplined Growth InvestorsBuy6,075239,200$11,848
Q2 2013Renaissance Technologies LLCBuy256,100256,100$12,162
Q2 2013Disciplined Growth InvestorsBuy233,125233,125$11,071

Frequently asked questions about TREX activity

  • Which institutional owners are buying TREX?

    Institutional owners buying TREX 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 TREX activity?

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

  • Is institutional interest in TREX increasing?

    Institutional interest in TREX 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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