Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TREX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 10.4M | $377.4M | -0.6% | 9.972% | 0.01% |
| 2 | WELLINGTON MANAGEMENT GROUP LLP | 8.4M | $304.4M | +15.7% | 8.045% | 0.06% |
| 3 | ALLIANCEBERNSTEIN L.P. | 6.4M | $225.6M | -1.1% | 6.190% | 0.07% |
Filings activity in TREX during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 412 | 2.4% | 80.13% | +5.28 pp | $3.80B | +7.0% |
| Q4 2025 | 422 | 6.0% | 74.85% | 40.85 pp | $3.55B | 35% |
| Q3 2025 | 449 | +3.0% | 115.70% | 1.47 pp | $5.49B | 1.2% |
| Q2 2025 | 436 | +1.2% | 117.17% | 8.72 pp | $5.55B | 6.9% |
| Q1 2025 | 431 | 4.0% | 125.89% | 22.64 pp | $5.97B | 15% |
| Q4 2024 | 449 |
Quick answers to the most common questions about buying TREX stock.
Based on Q1 2026 13F filings, institutional ownership of Trex Company, Inc. stands at 80.1%, held across 412 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of TREX, with approximately 10,361,159 shares worth $0.38B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of TREX, including TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for TREX is 66 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 4.7M | $172.9M | — | 4.570% | 0.00% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.5M | $163.3M | — | 4.316% | 0.01% |
| 6 | AQR CAPITAL MANAGEMENT LLC | 4.2M | $152.7M | +9.0% | 4.087% | 0.07% |
| 7 | WASATCH ADVISORS INC | 3.5M | $128.8M | -1.8% | 3.404% | 0.86% |
| 8 | STATE STREET CORP | 3.3M | $118.4M | +2.8% | 3.128% | 0.00% |
| 9 | MORGAN STANLEY | 2.1M | $77.9M | -7.5% | 2.060% | 0.00% |
| 10 | Clearbridge Investments, LLC | 2.1M | $77.3M | -2.4% | 2.042% | 0.07% |
| 11 | BANK OF AMERICA CORP /DE/ | 2.0M | $73.6M | +30.8% | 1.945% | 0.01% |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 2.0M | $72.0M | +3.3% | 1.901% | 0.00% |
| 13 | Impax Asset Management Group plc | 1.8M | $64.3M | -1.0% | 1.700% | 0.45% |
| 14 | WESTWOOD HOLDINGS GROUP INC | 1.7M | $63.7M | — | 1.683% | 0.46% |
| 15 | DIMENSIONAL FUND ADVISORS LP | 1.7M | $61.9M | -4.8% | 1.637% | 0.01% |
| 16 | AMERICAN CENTURY COMPANIES INC | 1.7M | $61.0M | +22.1% | 1.613% | 0.03% |
| 17 | FEDERATED HERMES, INC. | 1.5M | $54.1M | -1.5% | 1.429% | 0.09% |
| 18 | FULLER & THALER ASSET MANAGEMENT, INC. | 1.5M | $53.7M | — | 1.419% | 0.18% |
| 19 | TWO SIGMA INVESTMENTS, LP | 1.5M | $53.3M | +49.7% | 1.407% | 0.04% |
| 20 | CITADEL ADVISORS LLC | 1.5M | $53.1M | -28.0% | 1.403% | 0.02% |
| 21 | Point72 Asset Management, L.P. | 1.4M | $50.7M | -17.5% | 1.340% | 0.07% |
| 22 | JACOBS LEVY EQUITY MANAGEMENT, INC | 1.3M | $46.2M | -4.3% | 1.222% | 0.19% |
| 23 | Freestone Grove Partners LP | 1.2M | $45.3M | -19.1% | 1.197% | 0.33% |
| 24 | MARSHALL WACE, LLP | 1.2M | $45.0M | +793.3% | 1.189% | 0.05% |
| 25 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.2M | $44.9M | +566.9% | 1.186% | 0.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in TREX — a direct measure of their conviction.
| 148.53% |
| +3.66 pp |
| $7.04B |
| +2.5% |
| Q3 2024 | 473 | 6.3% | 144.87% | 14.04 pp | $6.87B | 8.8% |
| Q2 2024 | 505 | — | 158.91% | — | $7.53B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
69 institutions opened new positions in TREX during Q1 2026, while 79 fully exited. 245 added to existing positions and 96 trimmed.
TREX institutional ownership rose by 5.28 percentage points quarter-over-quarter, with a net change of -10 holders.
The top 10 institutions account for 47.3% of all reported 13F value in TREX, and the top 25 account for 69.5%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Trex Company, Inc. (TREX) Institutional Ownership