$TREX

$49.85 +$0.28 (0.56%) Close

$TREX Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 101.9M shares outstanding

Who owns TREX?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 52.3%

BlackRock, Inc. 10.3% · Wellington Management Group LLP 9.7%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

471

+45 vs last qtr

Net shares bought

+5.3M

by institutions in Q2 2026

New / sold out

103 / 58

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Millennium Management LLC +3.3M
American Century Companies Inc +1.6M

Biggest sellers in Q2 2026

Fuller & Thaler Asset Management, Inc. SOLD OUT −1.5M
Woodline Partners LP SOLD OUT −976.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$70K

1 notice from 1 person

Shares covered

1.4K

0.00% of the company

Arranged in advance

100%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Rudolph Jacob T. Svp, chro 10b5-1 $70K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−9.6%

−1.11% a year

Each share's claim on the business

+10.6%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$840M vs $76.1M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years63% 3–5 years6% 1–3 years14% Under 1 year17%

Quarterly turnover

15.3%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting TREX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	10.5M	10.30%	+132.1K (+1.3%)	≤2021	0.0%
Shares held by quarter Peak holding13.8M (Q3'24) Change over 8 quarters−3.3M Share of the company10.300% BlackRock, Inc.'s full portfolio →
WM Wellington Management Group LLP	9.9M	9.70%	+1.5M (+18.2%)	2025	0.1%
Shares held by quarter Peak holding9.9M (Q2'26) Change over 8 quarters+9.9M Share of the company9.700% Wellington Management Group LLP's full portfolio →

BlackRock, Inc.

10.5M

% of company

10.30%

Change vs last qtr

+132.1K (+1.3%)

Held since

≤2021

Wellington Management Group LLP

9.9M

% of company

9.70%

Change vs last qtr

+1.5M (+18.2%)

Held since

2025

28 more super investors behind a free account

See every manager holding Trex Company, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting TREX on Form N-PORT; together they hold 36.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$178M	3.6M	3.49%	0.14%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$165M	3.3M	3.24%	0.01%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$178M

% of company

3.49%

% of the fund

0.14%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$165M

% of company

3.24%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Trex Company, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
ZA Zambanini Adam Dante Insider	234.5K	0.23%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.230% Zambanini Adam Dante's insider activity →
FB Fairbanks Bryan Horix Insider	167.0K	0.16%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.160% Fairbanks Bryan Horix's insider activity →

Zambanini Adam Dante

Insider

234.5K

% of company

0.23%

Change vs last qtr

—

Held since

—

Fairbanks Bryan Horix

Insider

167.0K

% of company

0.16%

Change vs last qtr

—

Held since

—

17 more holders behind a free account

See every insider and 5%+ holder of Trex Company, Inc..

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