Vault-13

TREX CO INC TREX

COM · Common Stock · CUSIP 89531P105 · ISIN US89531P1057

American building materials company

447 institutional holders
104,922,625104.9m shares reported held*
95.6% of all shares outstanding*
$4.6bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($5.7m this quarter). Holder counts are more reliable. Shares outstanding: 109.7m as of 2022-10-17, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $43.97. Options: 13 managers hold calls ($8.4m notional), 14 hold puts ($15.0m).

Biggest calls

CITADEL ADVISORS LLC — $3.6m82.9k shares
JANE STREET GROUP, LLC — $1.4m32.0k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $905.0k20.6k shares
TWO SIGMA SECURITIES, LLC — $659.0k15.0k shares
CAPITAL FUND MANAGEMENT S.A. — $571.2k13.0k shares
SIMPLEX TRADING, LLC — $298.0k6.8k shares
PEAK6 Investments LLC — $250.0k5.7k shares
WOLVERINE TRADING, LLC — $218.0k4.9k shares
TUDOR INVESTMENT CORP ET AL — $212.0k4.8k shares
Walleye Trading LLC — $110.0k2.5k shares

Biggest puts

CITADEL ADVISORS LLC — $4.5m102.8k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $2.9m65.8k shares
JANE STREET GROUP, LLC — $1.6m37.1k shares
SIMPLEX TRADING, LLC — $1.6m37.0k shares
GOLDMAN SACHS GROUP INC — $1.4m31.8k shares
PEAK6 Investments LLC — $1.2m28.2k shares
WOLVERINE TRADING, LLC — $675.0k15.2k shares
Cubist Systematic Strategies, LLC — $400.0k9.1k shares
TWO SIGMA SECURITIES, LLC — $294.0k6.7k shares
GROUP ONE TRADING LLC — $277.0k6.3k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution filed 2025-04-24 9.8% 10.5m≈ $526.1m 2025-04-24
WELLINGTON MANAGEMENT GROUP LLP 13G · institution -0.9 pts · filed 2026-08-13 9.5% -0.9 pts 9.9m≈ $494.3m 2026-08-13
MILLENNIUM MANAGEMENT LLC 13G · passive investor new · filed 2026-08-07 5.5% new 5.6m≈ $278.7m 2026-08-07
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 5.4% new 5.6m≈ $278.7m 2026-04-30

Fell to 5% or below in the last year: ALLIANCEBERNSTEIN L.P. (0.2%, 2026-09-04), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC), PRICE T ROWE ASSOCIATES INC /MD/ (0.7%, 2025-11-14)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
10010Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 6 sellingQ1 22: 0 buyingQ1 22: 0 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 0 buyingQ3 22: 0 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—6$3.1m—
Q1 20220—0——
Q2 20220—0——
Q3 20220—0——

None reported in Q3 2022.

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 BlackRock Inc. 0.02% of their portfolio New York, NY 10,945,06910.9m $480.9m $480.9m 0.02% —
2 VANGUARD GROUP INC 0.01% of their portfolio Valley Forge, PA 10,085,74910.1m $443.2m $443.2m 0.01% —
3 ALLIANCEBERNSTEIN L.P. 0.15% of their portfolio NASHVILLE, TN 7,157,3627.2m $314.5m $314.5m 0.15% —
4 WASATCH ADVISORS LP 1.67% of their portfolio SALT LAKE CITY, UT 5,463,4705.5m $240.1m $240.1m 1.67% —
5 PRICE T ROWE ASSOCIATES INC /MD/ 0.04% of their portfolio BALTIMORE, MD 5,059,6285.1m $222.3m $222.3m 0.04% —
6 Clearbridge Investments, LLC 0.20% of their portfolio NEW YORK, NY 4,516,7074.5m $198.5m $198.5m 0.20% —
7 STATE STREET CORP 0.01% of their portfolio BOSTON, MA 3,454,9833.5m $151.8m $151.8m 0.01% —
8 BAMCO INC /NY/ 0.49% of their portfolio NEW YORK, NY 3,445,7063.4m $151.4m $151.4m 0.49% —
9 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.52% of their portfolio CHICAGO, IL 3,000,6263.0m $131.8m $131.8m 0.52% —
10 MACQUARIE GROUP LTD 0.16% of their portfolio Sydney, NSW 2000, C3 2,883,6932.9m $126.8m $126.8m 0.16% —
11 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 1,944,8621.9m $85.5m $85.5m 0.01% —
12 Artisan Partners Limited Partnership 0.15% of their portfolio Milwaukee, WI 1,925,1231.9m $84.6m $84.6m 0.15% —
13 Conestoga Capital Advisors, LLC 1.54% of their portfolio WAYNE, PA 1,790,6271.8m $78.7m $78.7m 1.54% —
14 BANK OF AMERICA CORP /DE/ 0.01% of their portfolio CHARLOTTE, NC 1,493,0741.5m $65.6m $65.6m 0.01% —
15 Balyasny Asset Management L.P. 0.24% of their portfolio Chicago, IL 1,429,2891.4m $62.8m $62.8m 0.24% —
16 GENEVA CAPITAL MANAGEMENT LLC 1.23% of their portfolio MILWAUKEE, WI 1,213,5451.2m $53.3m $53.3m 1.23% —
17 TWO SIGMA INVESTMENTS, LP 0.16% of their portfolio NEW YORK, NY 1,073,5161.1m $47.2m $47.2m 0.16% —
18 Bank of New York Mellon Corp 0.01% of their portfolio NEW YORK, NY 1,056,5061.1m $46.4m $46.4m 0.01% —
19 FEDERATED HERMES, INC. 0.13% of their portfolio PITTSBURGH, PA 995,442995.4k $43.7m $43.7m 0.13% —
20 EVENTIDE ASSET MANAGEMENT, LLC 0.86% of their portfolio Boston, MA 990,000990.0k $43.5m $43.5m 0.86% —
21 NORGES BANK 0.01% of their portfolio OSLO, Q8 896,751896.8k $39.4m $39.4m 0.01% —
22 DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio AUSTIN, TX 894,506894.5k $39.3m $39.3m 0.02% —
23 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 887,965888.0k $39.0m $39.0m 0.01% —
24 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 866,024866.0k $38.1m $38.1m 0.01% —
25 BLAIR WILLIAM & CO/IL 0.17% of their portfolio CHICAGO, IL 862,431862.4k $37.9m $37.9m 0.17% —
26 Handelsbanken Fonder AB 0.24% of their portfolio STOCKHOLM, V7 814,032814.0k $35.8m $35.8m 0.24% —
27 AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio KANSAS CITY, MO 790,912790.9k $34.8m $34.8m 0.03% —
28 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio SAN FRANCISCO, CA 742,761742.8k $32.6m $32.6m 0.01% —
29 Stephens Investment Management Group LLC 0.62% of their portfolio LITTLE ROCK, AR 742,465742.5k $32.6m $32.6m 0.62% —
30 Montanaro Asset Management Ltd 4.90% of their portfolio LONDON, X0 728,000728.0k $32.0m $32.0m 4.90% —
31 Allianz Asset Management GmbH 0.07% of their portfolio MUNICH, 2M 688,798688.8k $30.3m $30.3m 0.07% —
32 Baird Financial Group, Inc. 0.09% of their portfolio MILWAUKEE, WI 685,442685.4k $30.1m $30.1m 0.09% —
33 Allspring Global Investments Holdings, LLC 0.05% of their portfolio CHARLOTTE, NC 683,596683.6k $30.0m $30.0m 0.05% —
34 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 649,033649.0k $28.5m $28.5m 0.01% —
35 TWO SIGMA ADVISERS, LP 0.07% of their portfolio NEW YORK, NY 585,900585.9k $25.7m $25.7m 0.07% —
36 Aberdeen Group plc 0.08% of their portfolio EDINBURGH, X0 579,463579.5k $25.5m $25.5m 0.08% —
37 MARSHALL WACE, LLP 0.06% of their portfolio LONDON, X0 549,959550.0k $24.2m $24.2m 0.06% —
38 GOLDMAN SACHS GROUP INC 0.01% of their portfolio NEW YORK, NY 519,320519.3k $22.8m $22.8m 0.01% —
39 RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio NEW YORK, NY 480,000480.0k $21.1m $21.1m 0.03% —
40 SEI INVESTMENTS CO 0.04% of their portfolio OAKS, PA 457,376457.4k $20.1m $20.1m 0.04% —
41 DISCIPLINED GROWTH INVESTORS INC /MN 0.53% of their portfolio MINNEAPOLIS, MN 438,360438.4k $19.3m $19.3m 0.53% —
42 Rathbones Group PLC 0.23% of their portfolio Liverpool, X0 433,101433.1k $19.0m $19.0m 0.23% —
43 PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio DES MOINES, IA 430,732430.7k $18.9m $18.9m 0.02% —
44 STIFEL FINANCIAL CORP 0.03% of their portfolio ST. LOUIS, MO 427,269427.3k $18.8m $18.8m 0.03% —
45 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio Boston, MA 425,689425.7k $18.7m $18.7m 0.01% —
46 Pembroke Management, LTD 2.05% of their portfolio Montreal, A8 419,457419.5k $18.4m $18.4m 2.05% —
47 Broad Bay Capital Management, LP 3.10% of their portfolio New York, NY 400,000400.0k $17.6m $17.6m 3.10% —
48 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 365,949365.9k $16.1m $16.1m 0.01% —
49 NFJ INVESTMENT GROUP, LLC 0.39% of their portfolio DALLAS, TX 337,814337.8k $14.8m $14.8m 0.39% —
50 RHUMBLINE ADVISERS 0.02% of their portfolio BOSTON, MA 334,064334.1k $14.7m $14.7m 0.02% —
51 Maryland Capital Management 1.17% of their portfolio TOWSON, MD 320,513320.5k $14.1m $14.1m 1.17% —
52 Erste Asset Management GmbH 0.31% of their portfolio VIENNA, C4 310,387310.4k $13.8m $13.8m 0.31% —
53 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 301,993302.0k $13.3m $13.3m 0.00% —
54 Candriam S.C.A. 0.09% of their portfolio STRASSEN, N4 293,262293.3k $12.9m $12.9m 0.09% —
55 LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 1.58% of their portfolio Englewood, NJ 275,431275.4k $12.1m $12.1m 1.58% —
56 RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio ST PETERSBURG, FL 270,822270.8k $11.9m $11.9m 0.01% —
57 Swiss National Bank 0.01% of their portfolio ZURICH, V8 268,400268.4k $11.8m $11.8m 0.01% —
58 D. E. Shaw & Co., Inc. 0.02% of their portfolio New York, NY 267,102267.1k $11.7m $11.7m 0.02% —
59 Aperture Investors, LLC 1.85% of their portfolio New York, NY 256,349256.3k $11.3m $11.3m 1.85% —
60 California Public Employees Retirement System 0.01% of their portfolio Sacramento, CA 253,380253.4k $11.1m $11.1m 0.01% —
61 FRONTIER CAPITAL MANAGEMENT CO LLC 0.13% of their portfolio Boston, MA 248,849248.8k $10.9m $10.9m 0.13% —
62 DEUTSCHE BANK AG\ 0.01% of their portfolio FRANKFURT AM MAIN, 2M 246,043246.0k $10.8m $10.8m 0.01% —
63 ROYAL LONDON ASSET MANAGEMENT LTD 0.05% of their portfolio UNITED KINGDOM, X0 244,861244.9k $10.8m $10.8m 0.05% —
64 Man Group plc 0.05% of their portfolio LONDON, X0 242,617242.6k $10.7m $10.7m 0.05% —
65 CREDIT SUISSE AG/ 0.01% of their portfolio ZURICH, V8 240,461240.5k $10.6m $10.6m 0.01% —
66 Summit Creek Advisors LLC 1.42% of their portfolio MINNEAPOLIS, MN 234,819234.8k $10.3m $10.3m 1.42% —
67 SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio London, X0 226,871226.9k $10.0m $10.0m 0.02% —
68 ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio Berwyn, PA 224,076224.1k $9.8m $9.8m 0.01% —
69 Schonfeld Strategic Advisors LLC 0.08% of their portfolio NEW YORK, NY 216,326216.3k $9.5m $9.5m 0.08% —
70 NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio ALBANY, NY 216,190216.2k $9.5m $9.5m 0.01% —
71 Cubist Systematic Strategies, LLC 0.07% of their portfolio STAMFORD, CT 203,706203.7k $9.0m $9.0m 0.07% —
72 Qube Research & Technologies Ltd 0.06% of their portfolio LONDON, X0 198,235198.2k $8.7m $8.7m 0.06% —
73 Grantham, Mayo, Van Otterloo & Co. LLC 0.05% of their portfolio Boston, MA 195,783195.8k $8.6m $8.6m 0.05% —
74 EATON VANCE MANAGEMENT 0.01% of their portfolio BOSTON, MA 193,775193.8k $8.5m $8.5m 0.01% —
75 SVB WEALTH LLC 0.12% of their portfolio BOSTON, MA 190,717190.7k $8.4m $8.4m 0.12% —
76 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 190,061190.1k $8.4m $8.4m 0.00% —
77 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 186,260186.3k $8.2m $8.2m 0.00% —
78 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 182,265182.3k $8.0m $8.0m 0.01% —
79 COMERICA BANK 0.07% of their portfolio DALLAS, TX 180,126180.1k $8.1m $8.1m 0.07% —
80 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 179,123179.1k $7.9m $7.9m 0.00% —
81 AMERICAN INTERNATIONAL GROUP, INC. 0.06% of their portfolio New York, NY 174,571174.6k $7.7m $7.7m 0.06% —
82 Legal & General Group Plc 0.00% of their portfolio London, X0 173,628173.6k $7.6m $7.6m 0.00% —
83 LPL Financial LLC 0.01% of their portfolio FORT MILL, SC 170,637170.6k $7.5m $7.5m 0.01% —
84 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 168,696168.7k $7.4m $7.4m 0.00% —
85 AGF Investments America Inc. 2.62% of their portfolio TORONTO, A6 161,486161.5k $7.1m $7.1m 2.62% —
86 DF DENT & CO INC 0.10% of their portfolio BALTIMORE, MD 153,848153.8k $6.8m $6.8m 0.10% —
87 VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio San Antonio, TX 148,341148.3k $6.5m $6.5m 0.01% —
88 Retirement Systems of Alabama 0.03% of their portfolio MONTGOMERY, AL 144,355144.4k $6.3m $6.3m 0.03% —
89 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio WEST SACRAMENTO, CA 141,171141.2k $6.2m $6.2m 0.01% —
90 Edgestream Partners, L.P. 0.48% of their portfolio Princeton, NJ 140,014140.0k $6.2m $6.2m 0.48% —
91 Epoch Investment Partners, Inc. 0.04% of their portfolio New York, NY 132,854132.9k $5.8m $5.8m 0.04% —
92 Amundi 0.00% of their portfolio Paris, I0 132,245132.2k $6.3m $6.3m 0.00% —
93 AGF INVESTMENTS INC. 0.05% of their portfolio TORONTO, A6 131,303131.3k $5.8m $5.8m 0.05% —
94 TD Asset Management Inc 0.01% of their portfolio Toronto, A6 128,357128.4k $5.7m $5.7m 0.01% —
95 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio ALBANY, NY 127,724127.7k $5.6m $5.6m 0.01% —
96 Thrivent Financial for Lutherans 0.02% of their portfolio Minneapolis, MN 126,733126.7k $5.6m $5.6m 0.02% —
97 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio TALLAHASSEE, FL 125,871125.9k $5.5m $5.5m 0.01% —
98 AXA S.A. 0.01% of their portfolio PARIS, I0 124,672124.7k $5.5m $5.5m 0.01% —
99 Ensign Peak Advisors, Inc 0.01% of their portfolio SALT LAKE CITY, UT 120,075120.1k $5.3m $5.3m 0.01% —
100 Ashfield Capital Partners, LLC 0.44% of their portfolio San Francisco, CA 118,451118.5k $5.2m $5.2m 0.44% —