TREX COMPANY INC (TREX) Stock Institutional Trading Activity


TREX COMPANY INC (TREX) 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, Disciplined Growth Investors, Mairs & Power Growth Fund, Alapocas Investment Partners, 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 2018Polen Capital ManagementBuy7939,514$732
Q3 2018Renaissance Technologies LLCBuy276,100295,200$22,724
Q3 2018Disciplined Growth InvestorsSell-17,128716,764$55,176
Q2 2018Polen Capital ManagementBuy4,8338,721$546
Q2 2018Disciplined Growth InvestorsBuy365,780733,892$45,934
Q1 2018Polen Capital ManagementBuy1,1583,888$423
Q1 2018Disciplined Growth InvestorsSell-1,727368,112$40,040
Q4 2017Polen Capital ManagementBuy2,7302,730$296
Q4 2017Renaissance Technologies LLCSell-26,70019,100$2,070
Q4 2017Disciplined Growth InvestorsSell-5,278369,839$40,087
Q3 2017Renaissance Technologies LLCBuy13,60045,800$4,125
Q3 2017Disciplined Growth InvestorsSell-19,125375,117$33,787
Q2 2017Renaissance Technologies LLCSell-81,20032,200$2,179
Q2 2017Disciplined Growth InvestorsSell-317394,242$26,674
Q1 2017Renaissance Technologies LLCSell-32,200113,400$7,869
Q1 2017Disciplined Growth InvestorsSell-5,850394,559$27,378
Q4 2016Renaissance Technologies LLCSell-5,400145,600$9,377
Q4 2016Disciplined Growth InvestorsBuy31,117400,409$25,786
Q3 2016Renaissance Technologies LLCBuy108,900151,000$8,867
Q3 2016Disciplined Growth InvestorsSell-5,725369,292$21,685
Q2 2016Renaissance Technologies LLCSell-53,90042,100$1,891
Q2 2016Disciplined Growth InvestorsSell-4,275375,017$16,846
Q1 2016Renaissance Technologies LLCBuy18,80096,000$4,601
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

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.