Trex Company, Inc.
US ˙ NYSE ˙ US89531P1057

SecurityTREX / Trex Company, Inc.
InstitutionWhittier Trust Co
Latest Disclosed Ownership392 shares
Latest Disclosed Value $ 14,128
Whittier Trust Co ownership in TREX / Trex Company, Inc.

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 392 shares of Trex Company, Inc. (US:TREX) valued at $14,277 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 392 shares of Trex Company, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $15,900 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-28 2026-03-31 13F TREX common 89531P105 392 0 0.00 14 0.00 0.0002
2026-01-26 2025-12-31 13F TREX common 89531P105 392 0 0.00 15 -30.00 0.0002
2025-10-31 2025-09-30 13F TREX common 89531P105 392 0 0.00 21 -4.76 0.0002
2025-07-30 2025-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 21 -4.55 0.0003
2025-05-02 2025-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 23 -18.52 0.0003
2025-02-11 2024-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 27 3.85 0.0004
2024-10-21 2024-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 26 -10.34 0.0003
2024-07-29 2024-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 29 -25.64 0.0004
2024-05-02 2024-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 39 21.88 0.0006
2024-01-11 2023-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 32 33.33 0.0005
2023-10-27 2023-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 24 -4.00 0.0004
2023-07-24 2023-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 26 31.58 0.0004
2023-04-21 2023-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 19 18.75 0.0003
2023-01-25 2022-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 17 -5.88 0.0003
2022-10-21 2022-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 -33 -7.76 17 -26.09 0.0004
2022-07-28 2022-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 425 16 3.91 23 -14.81 0.0005
2022-04-29 2022-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 409 17 4.34 27 -49.06 0.0005
2022-01-19 2021-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 53 32.50 0.0009
2021-11-01 2021-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 40 0.00 0.0007
2021-07-29 2021-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 40 11.11 0.0007
2021-04-26 2021-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 0 0.00 36 9.09 0.0007
2021-01-29 2020-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 392 -5,916 -93.79 33 -92.70 0.0007
2020-10-30 2020-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 6,308 3,154 100.00 452 10.24 0.0108
2020-07-10 2020-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 3,154 0 0.00 410 62.06 0.0114
2020-04-27 2020-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 3,154 0 0.00 253 -10.60 0.0083
2020-01-31 2019-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 3,154 0 0.00 283 -1.39 0.0074
2019-10-18 2019-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 3,154 196 6.63 287 35.38 0.0082
2019-07-23 2019-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 2,958 0 0.00 212 16.48 0.0062
2019-04-29 2019-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 2,958 0 0.00 182 3.41 0.0056
2019-02-07 2018-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 2,958 0 0.00 176 -22.81 0.0061
2018-10-23 2018-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 2,958 0 0.00 228 23.24 0.0071
2018-07-27 2018-06-30 13F/A-1 TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 2,958 1,479 100.00 185 14.91 0.0061
2018-05-01 2018-03-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 1,479 0 0.00 161 0.63 0.0054
2018-02-07 2017-12-31 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 1,479 0 0.00 160 20.30 0.0056
2017-10-23 2017-09-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 1,479 0 0.00 133 33.00 0.0048
2017-07-20 2017-06-30 13F TREX CO INC COM US SMALL-CAP EQUITIES 89531P105 1,479 0 0.00 100 -2.91 0.0039
2017-04-26 2017-03-31 13F TREX US SMALL AND MID-CAP EQUITIES 89531P105 1,479 1,479 103 0.0042
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.