ルイジアナ パシフィック コーポレーション
US ˙ NYSE ˙ US5463471053

SecurityLPX / Louisiana-Pacific Corporation
InstitutionMarshall Wace, Llp
Latest Disclosed Ownership512,081 shares
Latest Disclosed Value $ 37,253,894
Marshall Wace, Llp reports 301.42% increase in ownership of LPX / Louisiana-Pacific Corporation

On May 14, 2026 - Marshall Wace, Llp filed a 13F-HR form disclosing ownership of 512,081 shares of Louisiana-Pacific Corporation (US:LPX) valued at $37,253,893 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 127,566 shares of Louisiana-Pacific Corporation. This represents a change in shares of 301.42% during the quarter. The current value of the position is $36,152,919 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)
2026-05-14 2026-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 512,081 384,515 301.42 37,254 261.61 0.0176
2026-02-13 2025-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 127,566 89,788 237.67 10,302 206.97 0.0094
2025-11-13 2025-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 37,778 -203,855 -84.37 3,356 -83.85 0.0034
2025-08-13 2025-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 241,633 -417,929 -63.36 20,778 -65.75 0.0234
2025-05-15 2025-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 659,562 154,355 30.55 60,667 15.97 0.0770
2025-02-13 2024-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 505,207 -509,097 -50.19 52,314 -52.00 0.0629
2024-11-14 2024-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 1,014,304 -241,170 -19.21 108,997 5.45 0.1328
2024-08-14 2024-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 1,255,474 602,803 92.36 103,363 88.74 0.1380
2024-05-15 2024-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 652,671 652,671 54,766 0.0834
2022-08-15 2022-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -534,403 -100.00 0 -100.00
2022-05-16 2022-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 534,403 -5,540 -1.03 33,196 -21.53 0.0629
2022-02-14 2021-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 539,943 387,324 253.78 42,305 351.64 0.0781
2021-11-15 2021-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 152,619 152,619 9,367 0.0389
2021-05-17 2021-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -59,631 -100.00 0 -100.00
2021-02-16 2020-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 59,631 59,631 2,216 0.0120
2020-11-16 2020-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -91,297 -100.00 0 -100.00
2020-08-13 2020-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 91,297 91,297 2,342 0.0164
2020-02-14 2019-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -46,564 -100.00 0 -100.00
2019-11-14 2019-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 46,564 3,773 8.82 1,145 2.05 0.0090
2019-08-14 2019-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 42,791 42,791 1,122 0.0092
2019-05-14 2019-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -536,995 -100.00 0 -100.00
2019-02-14 2018-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 536,995 536,995 11,933 0.1218
2018-11-14 2018-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -227,006 -100.00 0 -100.00
2018-08-14 2018-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 227,006 227,006 6,179 0.0925
2017-05-12 2017-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 0 -1,557,345 -100.00 0 -100.00
2017-02-10 2016-12-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 1,557,345 2,452 0.16 29,481 0.69 0.1938
2016-11-10 2016-09-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 1,554,893 838,213 116.96 29,279 135.48 0.2082
2016-08-12 2016-06-30 13F LOUISIANA-PACIFI COMMON STOCK 546347105 716,680 675,142 1,625.36 12,434 1,648.80 0.1045
2016-05-13 2016-03-31 13F LOUISIANA-PACIFI COMMON STOCK 546347105 41,538 41,538 711 0.0069
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.