웨이어하우저 컴퍼니
MX ˙ BMV ˙ US9621661043
SecurityMX:WY / Weyerhaeuser Company
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership641,125 shares
Latest Disclosed Value $ 15,662,684
Marshall Wace, Llp reports 203.09% increase in ownership of WY / Weyerhaeuser Company

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 641,125 shares of Weyerhaeuser Company (MX:WY) valued at $15,662,684 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 211,530 shares of Weyerhaeuser Company. This represents a change in shares of 203.09% during the quarter.

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)
2026-05-14 2026-03-31 13F WEYERHAEUSER REIT 962166104 641,125 429,595 203.09 15,663 212.55 0.0156
2026-02-13 2025-12-31 13F WEYERHAEUSER REIT 962166104 211,530 211,530 5,011 0.0046
2025-05-15 2025-03-31 13F WEYERHAEUSER REIT 962166104 0 -444,620 -100.00 0 -100.00
2025-02-13 2024-12-31 13F WEYERHAEUSER REIT 962166104 444,620 203,080 84.08 12,516 53.04 0.0150
2024-11-14 2024-09-30 13F WEYERHAEUSER REIT 962166104 241,540 76,696 46.53 8,179 74.78 0.0100
2024-08-14 2024-06-30 13F WEYERHAEUSER REIT 962166104 164,844 -71,688 -30.31 4,680 -44.91 0.0062
2024-05-15 2024-03-31 13F WEYERHAEUSER REIT 962166104 236,532 152,432 181.25 8,494 190.46 0.0129
2024-02-14 2023-12-31 13F WEYERHAEUSER REIT 962166104 84,100 -6,589 -7.27 2,924 5.18 0.0050
2023-11-14 2023-09-30 13F WEYERHAEUSER REIT 962166104 90,689 56,400 164.48 2,781 141.95 0.0056
2023-08-14 2023-06-30 13F WEYERHAEUSER REIT 962166104 34,289 34,289 1,149 0.0022
2023-05-15 2023-03-31 13F WEYERHAEUSER REIT 962166104 0 -8,700 -100.00 0 -100.00
2023-02-14 2022-12-31 13F WEYERHAEUSER REIT 962166104 8,700 8,700 270 0.0006
2022-05-16 2022-03-31 13F WEYERHAEUSER REIT 962166104 0 -8,635 -100.00 0 -100.00
2022-02-14 2021-12-31 13F WEYERHAEUSER REIT 962166104 8,635 8,635 354 0.0007
2021-11-15 2021-09-30 13F WEYERHAEUSER REIT 962166104 0 -192,039 -100.00 0 -100.00
2021-08-13 2021-06-30 13F WEYERHAEUSER REIT 962166104 192,039 180,241 1,527.73 6,610 1,473.81 0.0322
2021-05-17 2021-03-31 13F WEYERHAEUSER REIT 962166104 11,798 11,798 -93.86 420 -93.65 0.0019
2021-02-16 2020-12-31 13F WEYERHAEUSER REIT 962166104 0 -22,485 -100.00 0 -100.00
2020-11-16 2020-09-30 13F WEYERHAEUSER REIT 962166104 22,485 22,485 641 0.0041
2020-08-13 2020-06-30 13F WEYERHAEUSER REIT 962166104 0 -25,925 -100.00 0 -100.00
2020-05-15 2020-03-31 13F WEYERHAEUSER REIT 962166104 25,925 25,925 439 0.0044
2019-05-14 2019-03-31 13F WEYERHAEUSER REIT 962166104 0 -160,397 -100.00 0 -100.00
2019-02-14 2018-12-31 13F WEYERHAEUSER REIT 962166104 160,397 -383,052 -70.49 3,506 -80.01 0.0358
2018-12-06 2018-09-30 13F/A-1 WEYERHAEUSER REIT 962166104 543,449 543,449 238.81 17,537 400.20 0.1492
2018-11-14 2018-09-30 13F WEYERHAEUSER REIT 962166104 543,449 543,449 17,537
2018-08-14 2018-06-30 13F WEYERHAEUSER REIT 962166104 0 -6,795 -100.00 0 -100.00
2018-05-15 2018-03-31 13F WEYERHAEUSER REIT 962166104 6,795 6,795 238 0.0099
2016-11-10 2016-09-30 13F WEYERHAEUSER REIT 962166104 0 -13,402 -100.00 0 -100.00
2016-08-12 2016-06-30 13F WEYERHAEUSER REIT 962166104 13,402 -374,656 -96.55 399 -96.68 0.0034
2016-05-13 2016-03-31 13F WEYERHAEUSER REIT 962166104 388,058 -35,480 -8.38 12,022 -5.32 0.1158
2016-02-10 2015-12-31 13F WEYERHAEUSER REIT 962166104 423,538 -1,129,309 -72.73 12,698 -70.09 0.1192
2015-11-12 2015-09-30 13F WEYERHAEUSER REIT 962166104 1,552,847 1,299,819 513.71 42,455 432.69 0.5216
2015-08-14 2015-06-30 13F WEYERHAEUSER REIT 962166104 253,028 -612,982 -70.78 7,970 -72.24 0.1040
2015-05-11 2015-03-31 13F WEYERHAEUSER REIT 962166104 866,010 43,430 5.28 28,708 -2.76 0.3740
2015-02-17 2014-12-31 13F WEYERHAEUSER REIT 962166104 822,580 640,990 352.99 29,522 410.32 0.3898
2014-11-13 2014-09-30 13F WEYERHAEUSER REIT 962166104 181,590 -337,534 -65.02 5,785 -62.03 0.0835
2014-05-14 2014-03-31 13F WEYERHAEUSER REIT 962166104 519,124 519,124 15,236 0.2771
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.