Who owns Trex Company (TREX)
Which tracked institutional funds hold TREX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TREX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
176 tracked funds added or opened TREX while 62 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
TREX’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes TREX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in TREX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 437 tracked filers holding TREX, 232 increased or opened the position and 217 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in TREX between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 25
- Alyeska Investment Group, L.P.$30M
- Hook Mill Capital Partners, LP$26M
- Rivermont Capital Management LP$20M
- Junto Capital Management LP$20M
- MUFG Securities EMEA plc$18M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$17M
Full exits 35
- FULLER & THALER ASSET MANAGEMENT, INC.$54M
- Woodline Partners LP$36M
- Amundi$26M
- RENAISSANCE TECHNOLOGIES LLC$6M
- CWM, LLC$5M
- SG Americas Securities, LLC$4M
Largest adds
- BlackRock, Inc.$296M
- WELLINGTON MANAGEMENT GROUP LLP$190M
- MILLENNIUM MANAGEMENT LLC$171M
- AMERICAN CENTURY COMPANIES INC$105M
- CITADEL ADVISORS LLC$63M
- VANGUARD CAPITAL MANAGEMENT LLC$62M
Largest trims
- Nuveen, LLC$23M
- D. E. Shaw & Co., Inc.$23M
- BALYASNY ASSET MANAGEMENT L.P.$21M
- MARSHALL WACE, LLP$19M
- Squarepoint Ops LLC$17M
- DEUTSCHE BANK AG\$12M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 10,493,216 | $525M | 10.3% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 9,877,116 | $494M | 9.7% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 6,039,140 | $220M | 4.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 4,701,079 | $235M | 4.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 4,444,799 | $222M | 4.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 3,773,886 | $189M | 3.7% | 2026-Q2 |
| WASATCH ADVISORS LP added | 3,757,238 | $188M | 3.7% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 3,633,238 | $181M | 3.6% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 3,308,378 | $166M | 3.3% | 2026-Q2 |
| STATE STREET CORP trimmed | 3,247,388 | $162M | 3.2% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 2,236,735 | $112M | 2.2% | 2026-Q2 |
| Clearbridge Investments, LLC added | 2,168,849 | $109M | 2.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 2,113,486 | $106M | 2.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 1,928,184 | $97M | 1.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,895,509 | $95M | 1.9% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 1,766,003 | $88M | 1.7% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,713,362 | $86M | 1.7% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,622,917 | $81M | 1.6% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 1,520,782 | $76M | 1.5% | 2026-Q2 |
| WESTWOOD HOLDINGS GROUP INC trimmed | 1,504,036 | $75M | 1.5% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 1,331,721 | $67M | 1.3% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 1,327,948 | $66M | 1.3% | 2026-Q2 |
| Impax Asset Management Group plc trimmed | 1,304,299 | $65M | 1.3% | 2026-Q2 |
| NORGES BANK added | 1,258,986 | $63M | 1.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,124,192 | $56M | 1.1% | 2026-Q2 |
| Quantinno Capital Management LP added | 981,547 | $49M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 879,059 | $44M | 0.9% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 875,234 | $44M | 0.9% | 2026-Q2 |
| FMR LLC added | 792,194 | $40M | 0.8% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 741,113 | $37M | 0.7% | 2026-Q2 |
| Freestone Grove Partners LP trimmed | 723,354 | $36M | 0.7% | 2026-Q2 |
| Grantham, Mayo, Van Otterloo & Co. LLC added | 693,095 | $35M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 656,124 | $33M | 0.6% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 639,438 | $32M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 600,767 | $30M | 0.6% | 2026-Q2 |
| Alyeska Investment Group, L.P. new | 599,679 | $30M | 0.6% | 2026-Q2 |
| DISCIPLINED GROWTH INVESTORS INC /MN trimmed | 592,096 | $30M | 0.6% | 2026-Q2 |
| GENEVA CAPITAL MANAGEMENT LLC trimmed | 588,319 | $29M | 0.6% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 563,931 | $28M | 0.6% | 2026-Q2 |
| Hill City Capital, LP | 550,000 | $28M | 0.5% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 542,355 | $27M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 520,095 | $26M | 0.5% | 2026-Q2 |
| Hook Mill Capital Partners, LP new | 518,584 | $26M | 0.5% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 511,527 | $26M | 0.5% | 2026-Q2 |
| DAVENPORT & Co LLC trimmed | 467,280 | $23M | 0.5% | 2026-Q2 |
| Heron Bay Capital Management trimmed | 460,237 | $23M | 0.5% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 403,849 | $20M | 0.4% | 2026-Q2 |
| Rivermont Capital Management LP new | 403,273 | $20M | 0.4% | 2026-Q2 |
| Junto Capital Management LP new | 401,159 | $20M | 0.4% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 398,428 | $20M | 0.4% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 367,932 | $19M | 0.4% | 2026-Q2 |
| MUFG Securities EMEA plc new | 366,200 | $18M | 0.4% | 2026-Q2 |
| CONFLUENCE INVESTMENT MANAGEMENT LLC trimmed | 354,325 | $18M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 336,392 | $17M | 0.3% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 333,000 | $17M | 0.3% | 2026-Q2 |
| BANK OF NOVA SCOTIA trimmed | 319,675 | $16M | 0.3% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 313,232 | $16M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 302,325 | $15M | 0.3% | 2026-Q2 |
| UBS Group AG trimmed | 297,034 | $15M | 0.3% | 2026-Q2 |
| Walleye Capital LLC added | 294,170 | $15M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 285,381 | $14M | 0.3% | 2026-Q2 |
| LOOMIS SAYLES & CO L P trimmed | 281,266 | $14M | 0.3% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 277,053 | $14M | 0.3% | 2026-Q2 |
| Creative Planning added | 268,132 | $13M | 0.3% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 247,523 | $12M | 0.2% | 2026-Q2 |
| Man Group plc trimmed | 222,615 | $11M | 0.2% | 2026-Q2 |
| Nuveen, LLC trimmed | 215,947 | $11M | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 212,168 | $11M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 208,500 | $10M | 0.2% | 2026-Q2 |
| AGF MANAGEMENT LTD added | 200,692 | $10M | 0.2% | 2026-Q2 |
| OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC trimmed | 199,236 | $10M | 0.2% | 2026-Q2 |
| Mariner, LLC added | 196,562 | $10M | 0.2% | 2026-Q2 |
| WINTON GROUP Ltd added | 194,459 | $10M | 0.2% | 2026-Q2 |
| GAMCO INVESTORS, INC. ET AL added | 191,413 | $10M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 178,186 | $9M | 0.2% | 2026-Q2 |
| Gotham Asset Management, LLC trimmed | 157,817 | $8M | 0.2% | 2026-Q2 |
| H Squared Management LP added | 155,200 | $8M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 152,303 | $8M | 0.2% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 152,300 | $7M | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 146,862 | $7M | 0.1% | 2026-Q2 |
| Voleon Capital Management LP trimmed | 146,682 | $7M | 0.1% | 2026-Q2 |
| CITIGROUP INC trimmed | 145,613 | $7M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 145,454 | $7M | 0.1% | 2026-Q2 |
| EFG International AG added | 143,826 | $7M | 0.1% | 2026-Q2 |
| Jain Global LLC added | 141,979 | $7M | 0.1% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 139,590 | $7M | 0.1% | 2026-Q2 |
| Concentric Capital Strategies, LP added | 138,137 | $7M | 0.1% | 2026-Q2 |
| KORNITZER CAPITAL MANAGEMENT INC /KS added | 137,195 | $7M | 0.1% | 2026-Q2 |
| Legal & General Group Plc trimmed | 135,031 | $7M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 134,627 | $7M | 0.1% | 2026-Q2 |
| GABELLI FUNDS LLC added | 127,864 | $6M | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 127,700 | $6M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 119,681 | $6M | 0.1% | 2026-Q2 |
| Ensign Peak Advisors, Inc trimmed | 116,424 | $6M | 0.1% | 2026-Q2 |
| MAIRS & POWER INC | 116,022 | $6M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 108,634 | $5M | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 107,950 | $5M | 0.1% | 2026-Q2 |
| Tabor Asset Management, LP new | 107,875 | $5M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 107,462 | $5M | 0.1% | 2026-Q2 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. added | 107,454 | $5M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.