TREX CO INC (TREX) — Institutional Holders, Q2 2026

474 institutional investment managers reported a TREX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $5.5B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← TREX stock profile

TREX in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

144

Trimmed

148

Sold out

Biggest buyers

MILLENNIUM MANAGEMENTAdded · +3,276,802 sh+$164.0M
AMERICAN CENTURY COMPANIESAdded · +1,632,363 sh+$81.7M
SG Americas SecuritiesAdded · +1,557,302 sh+$77.9M
WELLINGTON MANAGEMENT GROUP LLPAdded · +1,518,338 sh+$76.0M
CITADEL ADVISORSAdded · +895,496 sh+$44.8M

Biggest sellers

FULLER & THALER ASSET MANAGEMENTSold out · -1,474,843 sh-$73.8M
Woodline PartnersSold out · -975,958 sh-$48.8M
NuveenTrimmed · -723,510 sh-$36.2M
MARSHALL WACE, LLPTrimmed · -714,961 sh-$35.8M
D. E. ShawTrimmed · -714,513 sh-$35.8M

TREX 13F holders ranked 1–100 of 474

Institutional investors reporting a position in TREX CO INC on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 10,493,216 sh	10,493,216	$525.1M	<0.01%	+1.3%
2	WELLINGTON MANAGEMENT GROUP LLP#2 · 9,877,116 sh	9,877,116	$494.3M	0.09%	+18.2%
3	VANGUARD CAPITAL MANAGEMENT#3 · 4,701,079 sh	4,701,079	$235.2M	<0.01%	-1.0%
4	VANGUARD PORTFOLIO MANAGEMENT#4 · 4,444,799 sh	4,444,799	$222.4M	0.01%	-0.9%
5	ALLIANCEBERNSTEIN L.P.#5 · 6,039,140 sh	6,039,140	$219.9M	0.07%	-6.1%
6	MILLENNIUM MANAGEMENT#6 · 3,773,886 sh	3,773,886	$188.8M	0.07%	+659.2%
7	WASATCH ADVISORS#7 · 3,757,238 sh	3,757,238	$188.0M	—	+6.2%
8	AQR CAPITAL MANAGEMENT#8 · 3,633,238 sh	3,633,238	$181.0M	0.06%	-14.4%
9	AMERICAN CENTURY COMPANIES#9 · 3,308,378 sh	3,308,378	$165.6M	0.07%	+97.4%
10	STATE STREET#10 · 3,247,388 sh	3,247,388	$162.5M	<0.01%	-0.1%
11	CITADEL ADVISORS#11 · 2,236,735 sh	2,236,735	$111.9M	0.01%	+66.8%
12	Clearbridge Investments#12 · 2,168,849 sh	2,168,849	$108.5M	0.09%	+2.3%
13	MORGAN STANLEY#13 · 2,113,486 sh	2,113,486	$105.8M	<0.01%	-1.3%
14	GEODE CAPITAL MANAGEMENT#14 · 1,928,184 sh	1,928,184	$96.5M	<0.01%	-2.4%
15	BANK OF AMERICA#15 · 1,895,509 sh	1,895,509	$94.9M	<0.01%	-6.2%
16	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#16 · 1,766,003 sh	1,766,003	$88.4M	0.04%	+43.3%
17	DIMENSIONAL FUND ADVISORS#17 · 1,713,362 sh	1,713,362	$85.7M	0.02%	+0.8%
18	SG Americas Securities#18 · 1,679,086 sh	1,679,086	$84.0M	0.05%	+1278.7%
19	GOLDMAN SACHS GROUP#19 · 1,622,917 sh	1,622,917	$81.2M	<0.01%	+58.4%
20	Point72 Asset Management, L.P.#20 · 1,520,782 sh	1,520,782	$76.1M	0.08%	+11.2%
21	WESTWOOD GROUP#21 · 1,504,036 sh	1,504,036	$75.3M	0.57%	-14.0%
22	TWO SIGMA INVESTMENTS#22 · 1,331,721 sh	1,331,721	$66.6M	0.05%	-8.9%
23	FEDERATED HERMES#23 · 1,327,948 sh	1,327,948	$66.5M	0.10%	-10.5%
24	Impax Asset Management Group plc#24 · 1,304,299 sh	1,304,299	$65.3M	0.42%	-26.2%
25	NORGES BANK#25 · 1,258,986 sh	1,258,986	$63.0M	<0.01%	—
26	CHARLES SCHWAB INVESTMENT MANAGEMENT#26 · 1,124,192 sh	1,124,192	$56.3M	<0.01%	+3.3%
27	Quantinno Capital Management#27 · 981,547 sh	981,547	$49.1M	0.06%	+372.5%
28	NORTHERN#28 · 879,059 sh	879,059	$44.0M	<0.01%	-0.8%
29	JACOBS LEVY EQUITY MANAGEMENT#29 · 875,234 sh	875,234	$43.8M	0.16%	-31.0%
30	FMR#30 · 792,194 sh	792,194	$39.6M	<0.01%	-3.4%
31	ROYCE & ASSOCIATES#31 · 741,113 sh	741,113	$37.1M	0.30%	+40.9%
32	Freestone Grove Partners#32 · 723,354 sh	723,354	$36.2M	0.23%	-41.8%
33	Grantham, Mayo, Van Otterloo#33 · 693,095 sh	693,095	$34.7M	0.08%	+1.9%
34	VANGUARD FIDUCIARY#34 · 656,124 sh	656,124	$32.8M	<0.01%	-1.4%
35	MANUFACTURERS LIFE INSURANCE COMPANY, THE#35 · 639,438 sh	639,438	$32.0M	0.03%	-0.2%
36	Amundi#36 · 607,749 sh	607,749	$30.4M	<0.01%	-15.5%
37	Bank of New York Mellon#37 · 600,767 sh	600,767	$30.1M	<0.01%	-7.5%
38	Alyeska Investment Group, L.P.#38 · 599,679 sh	599,679	$30.0M	0.08%	New
39	DISCIPLINED GROWTH INVESTORS#39 · 592,096 sh	592,096	$29.6M	0.50%	-12.7%
40	GENEVA CAPITAL MANAGEMENT#40 · 588,319 sh	588,319	$29.4M	0.67%	-21.5%
41	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#41 · 563,931 sh	563,931	$28.2M	<0.01%	-3.7%
42	Hill City Capital#42 · 550,000 sh	550,000	$27.5M	0.70%	0.0%
43	SEI INVESTMENTS#43 · 542,355 sh	542,355	$27.1M	0.02%	-0.9%
44	MARSHALL WACE, LLP#44 · 520,095 sh	520,095	$26.0M	0.02%	-57.9%
45	Hook Mill Capital Partners#45 · 518,584 sh	518,584	$25.9M	2.41%	New
46	WILLIAM BLAIR INVESTMENT MANAGEMENT#46 · 511,527 sh	511,527	$25.6M	0.08%	-21.0%
47	DAVENPORT#47 · 467,280 sh	467,280	$23.2M	—	-7.9%
48	Heron Bay Capital Management#48 · 460,237 sh	460,237	$23.0M	2.09%	-1.2%
49	PRINCIPAL FINANCIAL GROUP#49 · 403,849 sh	403,849	$20.2M	<0.01%	+68.7%
50	Rivermont Capital Management#50 · 403,273 sh	403,273	$20.2M	2.86%	New
51	Junto Capital Management#51 · 401,159 sh	401,159	$20.1M	0.35%	New
52	NOMURA ASSET MANAGEMENT INTERNATIONAL#52 · 398,428 sh	398,428	$19.9M	0.03%	+197.7%
53	JPMORGAN CHASE#53 · 367,932 sh	367,932	$18.5M	<0.01%	+87.8%
54	MUFG Securities EMEA plc#54 · 366,200 sh	366,200	$18.3M	0.19%	New
55	CONFLUENCE INVESTMENT MANAGEMENT#55 · 354,325 sh	354,325	$17.7M	—	-9.3%
56	RAYMOND JAMES FINANCIAL#56 · 336,392 sh	336,392	$16.8M	<0.01%	+1.7%
57	ADAGE CAPITAL PARTNERS GP, L.L.C.#57 · 333,000 sh	333,000	$16.7M	0.02%	New
58	BANK OF NOVA SCOTIA#58 · 319,675 sh	319,675	$16.0M	0.02%	-25.2%
59	DEUTSCHE BANK AG\#59 · 313,232 sh	313,232	$15.7M	<0.01%	-58.1%
60	Invesco Ltd.#60 · 302,325 sh	302,325	$15.1M	<0.01%	+8.5%
61	UBS Group AG#61 · 297,034 sh	297,034	$14.9M	<0.01%	-21.4%
62	Walleye Capital#62 · 294,170 sh	294,170	$14.7M	0.05%	+15.0%
63	RHUMBLINE ADVISERS#63 · 285,381 sh	285,381	$14.3M	0.01%	-3.1%
64	LOOMIS SAYLES & L P#64 · 281,266 sh	281,266	$14.1M	0.02%	-3.9%
65	FIRST ADVISORS#65 · 277,053 sh	277,053	$13.9M	<0.01%	+52.3%
66	Creative Planning#66 · 268,132 sh	268,132	$13.4M	<0.01%	+23.5%
67	BOOTHBAY FUND MANAGEMENT#67 · 247,523 sh	247,523	$12.4M	0.16%	+1896.0%
68	Man Group plc#68 · 222,615 sh	222,615	$11.1M	0.02%	-23.1%
69	Nuveen#69 · 215,947 sh	215,947	$10.8M	<0.01%	-77.0%
70	Russell Investments Group, Ltd.#70 · 212,168 sh	212,168	$10.6M	<0.01%	-32.5%
71	Swiss National Bank#71 · 208,500 sh	208,500	$10.4M	<0.01%	-1.8%
72	AGF MANAGEMENT LTD#72 · 200,692 sh	200,692	$10.0M	0.04%	+65.8%
73	OSBORNE PARTNERS CAPITAL MANAGEMENT#73 · 199,236 sh	199,236	$10.0M	0.55%	-4.3%
74	Mariner#74 · 196,562 sh	196,562	$9.8M	0.01%	+7.0%
75	WINTON GROUP Ltd#75 · 194,459 sh	194,459	$9.7M	0.32%	+449.0%
76	GAMCO INVESTORS, ET AL#76 · 191,413 sh	191,413	$9.6M	0.09%	+31.1%
77	D. E. Shaw#77 · 178,186 sh	178,186	$8.9M	<0.01%	-80.0%
78	Gotham Asset Management#78 · 157,817 sh	157,817	$7.9M	0.02%	-7.5%
79	H Squared Management#79 · 155,200 sh	155,200	$7.8M	4.97%	+25.0%
80	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#80 · 152,303 sh	152,303	$7.6M	<0.01%	+0.3%
81	Allspring Global Investments#81 · 152,300 sh	152,300	$7.4M	0.01%	+68.1%
82	Cerity Partners#82 · 146,862 sh	146,862	$7.3M	<0.01%	+23.1%
83	Voleon Capital Management#83 · 146,682 sh	146,682	$7.3M	0.13%	-39.7%
84	CITIGROUP#84 · 145,613 sh	145,613	$7.3M	<0.01%	-57.6%
85	AMERIPRISE FINANCIAL#85 · 145,454 sh	145,454	$7.3M	<0.01%	+0.4%
86	EFG International AG#86 · 143,826 sh	143,826	$7.2M	0.13%	+6.6%
87	Jain Global#87 · 141,979 sh	141,979	$7.1M	0.03%	New
88	BALYASNY ASSET MANAGEMENT L.P.#88 · 139,590 sh	139,590	$7.0M	<0.01%	-82.0%
89	Concentric Capital Strategies#89 · 138,137 sh	138,137	$6.9M	0.38%	New
90	KORNITZER CAPITAL MANAGEMENT#90 · 137,195 sh	137,195	$6.9M	0.14%	+21.5%
91	Legal & General Group Plc#91 · 135,031 sh	135,031	$6.8M	<0.01%	-3.8%
92	BARCLAYS PLC#92 · 134,627 sh	134,627	$6.7M	<0.01%	-9.0%
93	GABELLI FUNDS#93 · 127,864 sh	127,864	$6.4M	0.04%	+47.3%
94	ROYAL BANK OF CANADA#94 · 127,700 sh	127,700	$6.4M	<0.01%	+2.0%
95	Ensign Peak Advisors#95 · 116,424 sh	116,424	$5.8M	<0.01%	-12.9%
96	MAIRS & POWER#96 · 116,022 sh	116,022	$5.8M	0.05%	0.0%
97	PRICE T ROWE ASSOCIATES#97 · 108,634 sh	108,634	$5.4M	<0.01%	+4.5%
98	LPL Financial#98 · 107,950 sh	107,950	$5.4M	<0.01%	-14.7%
99	Tabor Asset Management#99 · 107,875 sh	107,875	$5.4M	1.65%	New
100	Retirement Systems of Alabama#100 · 107,462 sh	107,462	$5.4M	0.02%	-18.3%

Funds that sold out of TREX in Q2 2026 (53)

Held TREX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held TREX in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
FULLER & THALER ASSET MANAGEMENT1,474,843 sh	1,474,843	$53.7M
Woodline Partners975,958 sh	975,958	$35.5M
RENAISSANCE TECHNOLOGIES169,300 sh	169,300	$6.2M
HRT FINANCIAL120,492 sh	120,492	$4.4M
Qsemble Capital Management112,221 sh	112,221	$4.1M
Edgestream Partners, L.P.78,782 sh	78,782	$2.9M
Soviero Asset Management55,000 sh	55,000	$2.0M
PICTON MAHONEY ASSET MANAGEMENT44,560 sh	44,560	$1.6M
Graham Capital Management, L.P.41,671 sh	41,671	$1.5M
WORLDQUANT MILLENNIUM ADVISORS41,121 sh	41,121	$1.5M
CAISSE DE DEPOT ET PLACEMENT DU QUEBEC36,500 sh	36,500	$1.3M
Aquatic Capital Management36,087 sh	36,087	$1.3M
MIROVA32,797 sh	32,797	$1.2M
FORA Capital31,650 sh	31,650	$1.2M
SIMPLEX TRADING25,372 sh	25,372	$924.0K
Headlands Technologies13,803 sh	13,803	$502.7K
Quadrature Capital Ltd13,274 sh	13,274	$483.4K
Lombard Odier Asset Management (Europe) Ltd11,972 sh	11,972	$436.0K
AlphaGrep UK Ltd10,196 sh	10,196	$371.3K
LECAP ASSET MANAGEMENT LTD9,987 sh	9,987	$363.7K
Quantbot Technologies8,531 sh	8,531	$310.7K
AVIVA PLC7,824 sh	7,824	$284.9K
Calamos Advisors7,725 sh	7,725	$281.3K
Calamos Wealth Management7,725 sh	7,725	$281.3K
Mount Yale Investment Advisors6,952 sh	6,952	$253.2K
MIRABELLA FINANCIAL SERVICES LLP6,796 sh	6,796	$247.5K
Daiwa Securities Group6,589 sh	6,589	$240.0K
Farringdon Capital, Ltd.6,057 sh	6,057	$220.6K
Walleye Trading5,804 sh	5,804	$211.4K
Fieldview Capital Management5,603 sh	5,603	$204.1K
INVESTMENT ADVISORY SERVICES /TX5,588 sh	5,588	$203.5K
Engineers Gate Manager5,583 sh	5,583	$203.3K
GF FUND MANAGEMENT LTD.2,500 sh	2,500	$91.0K
GROUP ONE TRADING, L.P.2,395 sh	2,395	$87.2K
QUADRANT CAPITAL GROUP1,836 sh	1,836	$82.4K
Golden State Equity Partners1,200 sh	1,200	$43.7K
Caitong International Asset Management , Ltd1,144 sh	1,144	$41.7K
Ancora Advisors581 sh	581	$21.2K
Boreal Capital Management400 sh	400	$14.6K
VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.320 sh	320	$11.7K
Root Financial Partners159 sh	159	$5.8K
SUMMIT SECURITIES GROUP138 sh	138	$5.0K
CENTRAL124 sh	124	$4.5K
BARTLETT & WEALTH MANAGEMENT120 sh	120	$4.4K
Western Wealth Management112 sh	112	$4.1K
CURIO WEALTH62 sh	62	$2.3K
JNBA Financial Advisors56 sh	56	$2.0K
Signature Equity Partners20 sh	20	$728.00
Wealth Preservation Advisors17 sh	17	$619.00
Cornerstone Planning Group13 sh	13	$489.00
TopTier Wealth Management8 sh	8	$291.00
TWIN PEAKS WEALTH ADVISORS3 sh	3	$109.00
Vermillion Wealth Management1 sh	1	$36.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.