BLAIR WILLIAM & CO/IL

Position in TREX — Trex Co Inc

CIK 902367 CHICAGO, IL

Position in TREX

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$1,731,916

-$2,871,106 QoQ

Shares Held

47,554

-63.8% QoQ

Ownership

0.046%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 92.33923539555032.ToString("F0")% Shared 0.ToString("F0")% None 7.660764604449678.ToString("F0")%

Industrials · as of Mar 31, 2026

BLAIR WILLIAM & CO/IL holds $183,215,788 across 12 Building Products & Equipment names. TREX ranks #6 (0.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AAON	Aaon, Inc.	1,622,203	$134,237,298
2	SPXC	SPX Technologies, Inc.	135,942	$27,180,243
3	TT	Trane Technologies plc	21,876	$9,116,604
4	CARR	CARRIER GLOBAL Corp	96,003	$5,405,928
5	JCI	Johnson Controls International plc	17,681	$2,315,326
6	TREX	Trex Co Inc This page	47,554	$1,731,916
7	BLDR	Builders FirstSource, Inc.	13,450	$1,107,338
8	LII	Lennox International Inc	1,306	$606,153

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,731,916	47,554	-63.8%	Shares	Sole	2026-05-08
2025-12-31	$4,603,022	131,215	-72.3%	Shares	Sole	2026-02-17
2025-09-30	$24,447,453	473,146	-16.6%	Shares	Sole	2025-11-12
2025-06-30	$30,844,281	567,199	-16.7%	Shares	Sole	2025-07-24
2025-03-31	$39,549,599	680,716	+7.6%	Shares	Sole	2025-05-09
2024-12-31	$43,674,728	632,692	-17.3%	Shares	Sole	2025-02-12
2024-09-30	$50,948,680	765,225	-33.1%	Shares	Sole	2024-11-12
2024-06-30	$84,802,619	1,144,126	+0.6%	Shares	Sole	2024-08-12
2024-03-31	$113,438,193	1,137,225	+19.4%	Shares	Sole	2024-05-09
2023-12-31	$78,865,257	952,594	+14.4%	Shares	Sole	2024-02-12
2023-09-30	$51,336,064	832,972	+0.7%	Shares	Sole	2023-11-09
2023-06-30	$54,227,888	827,149	+26.3%	Shares	Sole	2023-08-11
2023-03-31	$31,866,049	654,737	+5.0%	Shares	Sole	2023-05-12
2022-12-31	$26,396,607	623,591	-27.7%	Shares	Sole	2023-02-10
2022-09-30	$37,895,218	862,431	-46.2%	Shares	Sole	2022-11-09
2022-06-30	$87,302,033	1,604,227	-0.9%	Shares	Sole	2022-08-10
2022-03-31	$105,780,964	1,619,179	+4.8%	Shares	Sole	2022-05-13
2021-12-31	$208,659,428	1,545,282	+11.5%	Shares	Sole	2022-02-14
2021-09-30	$141,229,417	1,385,553	+11.7%	Shares	Sole	2021-11-12
2021-06-30	$126,831,060	1,240,887	+30.2%	Shares	Sole	2021-08-12
2021-03-31	$87,274,510	953,403	+0.9%	Shares	Sole	2021-05-13
2020-12-31	$79,140,934	945,305	+2.0%	Shares	Sole	2021-02-09
2020-09-30	$66,346,994	926,634	+179.0%	Shares	Sole	2020-11-06
2020-06-30	$21,601,765	332,156	+8.8%	Shares	Sole	2020-08-12
2020-03-31	$12,237,057	305,392	—	Shares	Sole	2020-05-11
No filing history on record for this holder in this stock.