Canonical: https://ownershiptrace.com/13f/companies/1606

# Who owns TREX CO INC (TREX)? Elite investor 13F holders

6 tracked elite investors reported holding TREX CO INC as of 2026-06-30, including GMO, D.E. Shaw, GAMCO, Gotham Asset Management, Mairs & Power Funds. Who bought, trimmed or exited each quarter, with links to the original SEC 13F filings.

6 tracked investors currently reported holding · Latest report period: 2026-06-30 · Materials · Materials

Trex Company, Inc. manufactures and sells composite decking and railing products in the United States. It offers decking products and accessories that can be used for protection against fading, staining, mold, and scratching, including Trex Transcend, which are decking products that can also be used as cladding; Trex Signature; Trex Transcend Lineage; Trex Select; Trex Enhance; Trex Hideaway…

## Reported holders and securities, including exits (up to 20)

| Investor | Security | Instrument | Report period | Filed | Value | Quantity | Units | Change | Source |
|  --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [GMO](https://ownershiptrace.com/13f/investors/94674) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 34682474.00 USD | 693095.000000 | Shares | add | [Original filing](https://www.sec.gov/Archives/edgar/data/1352662/0001072613-26-000636-index.html) |
| [D.E. Shaw](https://ownershiptrace.com/13f/investors/98) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 8916427.00 USD | 178186.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1009207/0001104659-26-097217-index.html) |
| [GAMCO](https://ownershiptrace.com/13f/investors/137) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-12 00:00:00 | 9578307.00 USD | 191413.000000 | Shares | add | [Original filing](https://www.sec.gov/Archives/edgar/data/807249/0001140361-26-032508-index.html) |
| [Gotham Asset Management](https://ownershiptrace.com/13f/investors/94672) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 7897163.00 USD | 157817.000000 | Shares | reduce | [Original filing](https://www.sec.gov/Archives/edgar/data/1510387/0001398344-26-014644-index.html) |
| [Renaissance Technologies LLC](https://ownershiptrace.com/13f/investors/63) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-13 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1037389/0001037389-26-000059-index.html) |
| [Mairs & Power Funds](https://ownershiptrace.com/13f/investors/54) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 5805741.00 USD | 116022.000000 | Shares | hold | [Original filing](https://www.sec.gov/Archives/edgar/data/1070134/0001172661-26-003496-index.html) |
| [Century Management](https://ownershiptrace.com/13f/investors/6) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 4308794.00 USD | 86107.000000 | Shares | add | [Original filing](https://www.sec.gov/Archives/edgar/data/1142062/0001398344-26-014492-index.html) |
| [Ancora Advisors / Ancora Holdings](https://ownershiptrace.com/13f/investors/101) | TREX CO INC | SHARE | 2026-06-30 | 2026-08-14 00:00:00 | 0.00 USD | 0.000000 | Shares | exited | [Original filing](https://www.sec.gov/Archives/edgar/data/1446114/0001446114-26-000012-index.html) |

Public disclosures can be delayed, incomplete, or amended. Report period describes a position date; transaction date describes a reported transaction; filed describes submission. A recent filing or page update does not establish a current holding. A dash means unavailable or not comparable, not zero.

This public summary shows the default reporting scope. Enable JavaScript for interactive filters, charts, and additional rows.

[How to read the data](https://ownershiptrace.com/docs#reading-the-data) · [Disclaimer](https://ownershiptrace.com/disclaimer)