Trex Company, Inc. (TREX) ownership: Top institutional holder: BlackRock, Inc. ($377.35M). Insider activity: Net Seller (0 buys, 20 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 10361159.00 | $377.35M | 2026-03-31 |
| VANGUARD GROUP INC | 9820336.00 | $344.50M | 2025-12-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 8358778.00 | $304.43M | 2026-03-31 |
| ALLIANCEBERNSTEIN L.P. | 6430978.00 | $225.60M | 2026-03-31 |
| WASATCH ADVISORS LP | 3757238.00 | $188.01M | 2026-06-30 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4748412.00 | $172.94M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4484695.00 | $163.33M | 2026-03-31 |
| BlackRock Fund Advisors | 2436011.00 | $156.88M | 2016-12-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-07 | |
| Sell | null | 2026-07-29 | |
| Sell | null | 2026-07-29 | |
| Sell | null | 2026-07-29 | |
| Sell | null | 2026-07-29 | |
| Sell | null | 2026-07-29 | |
| Sell | null | 2026-07-29 | |
| Sell | null | 2026-07-29 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.