Latest Period
Q1 2026
Security Snapshot
TREX CO INC - Common Stock (TREX) Institutional Ownership
CUSIP: 89531P105
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
422
Shares (Excl. Options)
106,305,869
Price
$36.42
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- Security type / class
- Equity / Common Stock
- Symbol
- TREX on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 106,305,869
- Total 13F value
- $3,861,014,526
- Portfolio coverage rank
- 0%
- Share change
- +2,321,536
- Value change
- +$92,555,193
- Number of holders
- 422
- Shares outstanding
- 104,484,825
- SEC-reported price per share
- $36.64
- Insider filing price
- $36.64
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- TREX - TREX CO INC - Common Stock is tracked under CUSIP 89531P105.
- 422 institutions reported positions in Q1 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 430 to 422 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $3,657,282,565 to $3,861,014,526.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 422 institutions filings for Q1 2026.
Security key
89531P105
Latest holder period
Q1 2026
13F holders
422
13D/G owners
6
CIK / CUSIP context first
Open Q1 2026 holders
TREX full holder history
TREX CO INC SEC filings
TREX CO INC company facts
TREX CO INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 89531P105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
TREX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9.8% | $606,759,651 | 10,513,943 | BlackRock, Inc. | 31 Mar 2025 | |||
| WELLINGTON MANAGEMENT GROUP LLP | 8% | +19% | $338,530,833 | +$45,902,578 | 8,358,786 | +16% | Wellington Management Group LLP | 31 Mar 2026 |
| ALLIANCEBERNSTEIN L.P. | 6.1% | -18% | $271,585,241 | -$64,283,005 | 6,503,478 | -19% | AllianceBernstein L.P. | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5.4% | $202,816,606 | 5,568,825 | Vanguard Capital Management | 31 Mar 2026 | |||
| WASATCH ADVISORS LP | 4.8% | -8% | $312,487,390 | -$24,328,408 | 5,185,652 | -7.2% | WASATCH ADVISORS LP | 30 Jun 2025 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.7% | -87% | $38,273,571 | -$338,982,223 | 740,731 | -90% | T. Rowe Price Associates, Inc. | 30 Sep 2025 |
As of 31 Mar 2026, 422 institutional investors reported holding 106,305,869 shares of TREX CO INC - Common Stock (TREX). This represents 102% of the company’s total 104,484,825 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
70%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.9% | 10,361,159 | -0.62% | 0.01% | $377,353,414 |
| WELLINGTON MANAGEMENT GROUP LLP | 8% | 8,358,778 | +16% | 0.06% | $304,426,695 |
| ALLIANCEBERNSTEIN L.P. | 6.2% | 6,430,978 | -1.1% | 0.07% | $225,598,708 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 4,748,412 | 0% | 0% | $172,937,165 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.3% | 4,484,695 | 0% | 0.01% | $163,332,592 |
| AQR CAPITAL MANAGEMENT LLC | 4.1% | 4,246,384 | +9% | 0.07% | $152,657,497 |
| WASATCH ADVISORS LP | 3.4% | 3,536,750 | -1.8% | 0.86% | $128,808,435 |
| STATE STREET CORP | 3.1% | 3,250,111 | +2.8% | 0% | $118,369,043 |
| MORGAN STANLEY | 2% | 2,140,250 | -7.5% | 0% | $77,947,906 |
| Clearbridge Investments, LLC | 2% | 2,121,121 | -2.4% | 0.07% | $77,251,211 |
| BANK OF AMERICA CORP /DE/ | 1.9% | 2,020,399 | +31% | 0.01% | $73,582,931 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 1,975,680 | +3.3% | 0% | $71,972,896 |
| Impax Asset Management Group plc | 1.7% | 1,766,368 | -0.98% | 0.45% | $64,331,123 |
| WESTWOOD HOLDINGS GROUP INC | 1.7% | 1,748,611 | 0.46% | $63,684,412 | |
| DIMENSIONAL FUND ADVISORS LP | 1.6% | 1,700,549 | -4.8% | 0.01% | $61,928,542 |
| AMERICAN CENTURY COMPANIES INC | 1.6% | 1,676,015 | +22% | 0.03% | $61,040,529 |
| FEDERATED HERMES, INC. | 1.4% | 1,484,345 | -1.5% | 0.09% | $54,059,845 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1.4% | 1,474,843 | 0.18% | $53,713,782 | |
| TWO SIGMA INVESTMENTS, LP | 1.4% | 1,462,425 | +50% | 0.04% | $53,261,519 |
| Point72 Asset Management, L.P. | 1.3% | 1,367,429 | -18% | 0.09% | $49,801,764 |
| CITADEL ADVISORS LLC | 1.3% | 1,341,239 | -29% | 0.03% | $48,847,925 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1.2% | 1,269,354 | -4.3% | 0.19% | $46,229,873 |
| Freestone Grove Partners LP | 1.2% | 1,243,615 | -19% | 0.33% | $45,292,458 |
| MARSHALL WACE, LLP | 1.2% | 1,235,056 | +793% | 0.05% | $44,980,738 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.2% | 1,232,064 | +567% | 0.02% | $44,871,771 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 106,305,869 | $3,861,014,526 | +$92,555,193 | $36.42 | 422 |
| 2025 Q4 | 104,224,685 | $3,657,282,565 | -$504,177,764 | $35.08 | 430 |
| 2025 Q3 | 110,317,157 | $5,697,887,843 | -$220,142,571 | $51.67 | 459 |
| 2025 Q2 | 114,230,433 | $6,211,132,783 | -$62,514,818 | $54.38 | 442 |
| 2025 Q1 | 115,181,189 | $6,690,240,826 | +$376,982,290 | $58.10 | 435 |
| 2024 Q4 | 108,121,671 | $7,463,320,232 | +$431,040,134 | $69.03 | 462 |
| 2024 Q3 | 102,105,923 | $6,808,734,022 | -$84,155,787 | $66.58 | 487 |
| 2024 Q2 | 103,111,157 | $7,642,367,707 | +$32,171,159 | $74.12 | 513 |
| 2024 Q1 | 102,219,854 | $10,191,908,054 | -$196,929,612 | $99.75 | 519 |
| 2023 Q4 | 104,408,912 | $8,643,613,149 | -$114,414,377 | $82.79 | 476 |
| 2023 Q3 | 106,364,210 | $6,554,267,150 | +$12,654,406 | $61.63 | 478 |
| 2023 Q2 | 105,817,586 | $6,936,913,068 | +$111,090,649 | $65.56 | 448 |
| 2023 Q1 | 104,556,067 | $5,087,642,661 | +$32,071,606 | $48.67 | 422 |
| 2022 Q4 | 104,426,556 | $4,423,747,894 | +$8,029,777 | $42.33 | 441 |
| 2022 Q3 | 104,831,178 | $4,607,338,738 | -$224,948,474 | $43.94 | 426 |
| 2022 Q2 | 109,621,445 | $5,969,101,953 | +$36,992,611 | $54.42 | 455 |
| 2022 Q1 | 109,032,482 | $7,133,486,053 | -$29,449,276 | $65.33 | 466 |
| 2021 Q4 | 106,754,930 | $14,408,856,298 | -$312,290,487 | $135.03 | 540 |
| 2021 Q3 | 108,413,844 | $11,053,011,350 | -$43,877,735 | $101.93 | 475 |
| 2021 Q2 | 108,840,613 | $11,124,726,378 | +$103,744,607 | $102.21 | 470 |
| 2021 Q1 | 109,950,432 | $10,069,507,892 | -$253,322,645 | $91.54 | 465 |
| 2020 Q4 | 113,569,506 | $9,512,205,461 | -$180,547,266 | $83.72 | 458 |
| 2020 Q3 | 115,438,848 | $8,263,474,776 | +$4,059,829,960 | $71.60 | 399 |
| 2020 Q2 | 58,470,342 | $7,604,435,951 | -$404,068,015 | $130.07 | 385 |
| 2020 Q1 | 61,764,435 | $4,946,478,655 | -$37,788,543 | $80.14 | 337 |