TREX CO INC

Ticker: TREX CUSIP: 89531P105 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
BlackRock, Inc.10,425,992$365,744
VANGUARD GROUP INC9,820,336$344,497
WELLINGTON MANAGEMENT GROUP LLP7,225,393$253,467
ALLIANCEBERNSTEIN L.P.6,503,478$228,142
AQR CAPITAL MANAGEMENT LLC3,895,534$136,655
WASATCH ADVISORS LP3,601,463$126,339
STATE STREET CORP3,162,654$110,946
MORGAN STANLEY2,313,285$81,150
Clearbridge Investments, LLC2,172,743$76,220
GEODE CAPITAL MANAGEMENT, LLC1,913,263$67,132
CITADEL ADVISORS LLC1,901,418$66,702
NORGES BANK1,793,154$62,904
DIMENSIONAL FUND ADVISORS LP1,786,701$62,680
Impax Asset Management Group plc1,783,815$62,576
D. E. Shaw & Co., Inc.1,765,060$61,918
Point72 Asset Management, L.P.1,662,342$58,315
BANK OF AMERICA CORP /DE/1,544,503$54,181
Freestone Grove Partners LP1,537,938$53,951
FEDERATED HERMES, INC.1,507,171$52,872
AMERICAN CENTURY COMPANIES INC1,372,080$48,133
JACOBS LEVY EQUITY MANAGEMENT, INC1,326,379$46,529
FMR LLC1,284,867$45,073
MILLENNIUM MANAGEMENT LLC1,207,545$42,361
PRINCIPAL FINANCIAL GROUP INC1,098,189$38,524
DISCIPLINED GROWTH INVESTORS INC /MN1,007,236$35,334
CHARLES SCHWAB INVESTMENT MANAGEMENT INC978,918$34,340
TWO SIGMA INVESTMENTS, LP976,612$34,260
JANE STREET GROUP, LLC857,927$30,096
NORTHERN TRUST CORP850,596$29,839
GENEVA CAPITAL MANAGEMENT LLC800,838$28,093
MANUFACTURERS LIFE INSURANCE COMPANY, THE775,452$27,203
Squarepoint Ops LLC759,228$26,634
Nuveen, LLC748,429$26,255
DEUTSCHE BANK AG\747,141$26,210
Bank of New York Mellon Corp644,212$22,599
GOLDMAN SACHS GROUP INC621,070$21,787
Woodline Partners LP620,488$21,767
UBS ASSET MANAGEMENT AMERICAS INC599,105$21,017
TWO SIGMA ADVISERS, LP574,500$20,153
DAVENPORT & Co LLC567,866$19,921
Grantham, Mayo, Van Otterloo & Co. LLC556,600$19,526
Hill City Capital, LP552,000$19,364
BNP PARIBAS ARBITRAGE, SA491,455$17,240
Long Pond Capital, LP484,286$16,989
CITIGROUP INC455,858$15,991
TORONTO DOMINION BANK400,343$14,044
Baird Financial Group, Inc.354,436$12,434
Amundi342,574$12,017
Lansforsakringar Fondforvaltning AB (publ)319,484$11,207
Montanaro Asset Management Ltd302,462$10,610
Russell Investments Group, Ltd.300,345$10,537
VOLORIDGE INVESTMENT MANAGEMENT, LLC297,227$10,427
BANK OF NOVA SCOTIA291,400$10,222
RHUMBLINE ADVISERS290,943$10,206
Invesco Ltd.287,265$10,077
RENAISSANCE TECHNOLOGIES LLC277,500$9,735
JPMORGAN CHASE & CO254,649$8,933
LONDON CO OF VIRGINIA252,509$8,858
Kanen Wealth Management LLC250,000$9
TUDOR INVESTMENT CORP ET AL235,273$8,253
PineStone Asset Management Inc.223,169$7,829
BALYASNY ASSET MANAGEMENT L.P.214,353$7,520
Voleon Capital Management LP212,308$7,448
Swiss National Bank211,500$7,419
HRT FINANCIAL LP210,038$7
CAPITAL FUND MANAGEMENT S.A.209,902$7,363
SCOPIA CAPITAL MANAGEMENT LP208,976$7,331
DekaBank Deutsche Girozentrale200,000$20
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM198,504$6,964
ENVESTNET ASSET MANAGEMENT INC187,325$6,571
SEI INVESTMENTS CO186,332$6,537
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP184,736$6,481
TRILLIUM ASSET MANAGEMENT, LLC174,413$6,243
Quantinno Capital Management LP171,768$6,026
OSSIAM169,405$5,943
BARCLAYS PLC166,389$5,837
Man Group plc157,908$5,539
Legal & General Group Plc153,613$5,389
ROYCE & ASSOCIATES LP150,938$5,295
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.150,553$5,281
OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC149,836$5,256
Quantbot Technologies LP146,579$5,142
GAMCO INVESTORS, INC. ET AL144,490$5,069
LPL Financial LLC142,170$4,987
Bridgewater Associates, LP140,305$4,922
MARSHALL WACE, LLP138,257$4,850
EFG International AG136,367$4,793
Allspring Global Investments Holdings, LLC132,528$4,748
BLAIR WILLIAM & CO/IL131,215$4,603
Retirement Systems of Alabama128,723$4,516
Mariner, LLC122,870$4,313
Alpine Peaks Capital, LP122,839$4,309
Gotham Asset Management, LLC117,647$4,127
SUSQUEHANNA INTERNATIONAL GROUP, LLP113,401$3,978
KORNITZER CAPITAL MANAGEMENT INC /KS113,175$3,970
NEW YORK STATE TEACHERS RETIREMENT SYSTEM108,954$4
Creative Planning107,495$3,771
Edgestream Partners, L.P.106,070$3,721
Verition Fund Management LLC103,890$3,644
SG Americas Securities, LLC103,603$4
325 other institutions6,327,426$193,623
Total (425 institutions)104,311,500$3,600,591