Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionNatixis
Latest Disclosed Ownership3,565 shares
Latest Disclosed Value $ 385,804
Natixis reports 113.86% increase in ownership of OC / Owens Corning

On May 14, 2026 - Natixis filed a 13F-HR form disclosing ownership of 3,565 shares of Owens Corning (US:OC) valued at $385,804 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,667 shares of Owens Corning. This represents a change in shares of 113.86% during the quarter. The current value of the position is $428,370 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 OWENS CORNING COM 690742101 3,565 1,898 113.86 386 106.99 0.0014
2026-02-13 2025-12-31 13F OWENS CORNING COM 690742101 1,667 1,667 187 0.0007
2025-11-14 2025-09-30 13F OWENS CORNING COM 690742101 0 -17,427 -100.00 0 -100.00
2025-08-13 2025-06-30 13F OWENS CORNING COM 690742101 17,427 17,427 2,397 0.0106
2025-07-18 2025-03-31 13F/A-1 OWENS CORNING COM 690742101 0 -19,991 -100.00 0 -100.00
2025-05-14 2025-03-31 13F OWENS CORNING COM 690742101 0 0
2025-02-13 2024-12-31 13F OWENS CORNING COM 690742101 19,991 19,991 3,405 0.0208
2024-11-13 2024-09-30 13F OWENS CORNING COM 690742101 0 -3,011 -100.00 0 -100.00
2024-08-13 2024-06-30 13F OWENS CORNING COM 690742101 3,011 3,011 523 0.0030
2023-11-14 2023-09-30 13F OWENS CORNING COM 690742101 0 -137,891 -100.00 0 -100.00
2023-08-11 2023-06-30 13F OWENS CORNING COM 690742101 137,891 -13,075 -8.66 17,995 24.42 0.1462
2023-05-12 2023-03-31 13F OWENS CORNING COM 690742101 150,966 19,152 14.53 14,463 28.63 0.1304
2023-02-24 2022-12-31 13F/A-1 OWENS CORNING COM 690742101 131,814 -17,186 -11.53 11,244 -4.01 0.0631
2023-02-13 2022-12-31 13F Owens Corning COM 690742101 75,000 -74,000 6,398 0.0000
2022-11-14 2022-09-30 13F Owens Corning COM 690742101 149,000 149,000 11,713 0.0548
2022-08-12 2022-06-30 13F OWENS CORNING COM 690742101 0 -4,576 -100.00 0 -100.00
2022-05-13 2022-03-31 13F OWENS CORNING COM 690742101 4,576 -49,949 -91.61 419 -91.51 0.0015
2022-02-14 2021-12-31 13F OWENS CORNING COM 690742101 54,525 -96,995 -64.01 4,935 -61.91 0.0168
2021-11-12 2021-09-30 13F OWENS CORNING COM 690742101 151,520 151,520 12,955 0.0448
2021-05-14 2021-03-31 13F OWENS CORNING COM 690742101 0 -13,417 -100.00 0 -100.00
2021-02-12 2020-12-31 13F OWENS CORNING COM 690742101 13,417 410 3.15 1,016 13.52 0.0037
2020-11-12 2020-09-30 13F OWENS CORNING COM 690742101 13,007 -117,866 -90.06 895 -88.25 0.0066
2019-08-13 2019-06-30 13F OWENS CORNING COM 690742101 130,873 -282,124 -68.31 7,617 -60.42 0.0602
2019-05-15 2019-03-31 13F OWENS CORNING COM 690742101 412,997 163,161 65.31 19,246 75.15 0.1211
2019-02-14 2018-12-31 13F/A-1 OWENS CORNING COM 690742101 249,836 148,998 147.76 10,988 100.80 0.0905
2019-02-14 2018-12-31 13F OWENS CORNING COM 690742101 249,836 148,998 10,988
2018-11-14 2018-09-30 13F OWENS CORNING COM 690742101 100,838 -416,639 -80.51 5,472 -83.26 0.0316
2018-08-14 2018-06-30 13F OWENS CORNING COM 690742101 517,477 -203,756 -28.25 32,686 -43.63 0.1730
2018-05-15 2018-03-31 13F OWENS CORNING COM 690742101 721,233 322,832 81.03 57,987 58.31 0.3560
2018-02-14 2017-12-31 13F OWENS CORNING COM 690742101 398,401 72,928 22.41 36,629 45.50 0.2816
2017-11-14 2017-09-30 13F OWENS CORNING COM 690742101 325,473 1,169 0.36 25,175 16.00 0.2321
2017-08-14 2017-06-30 13F OWENS CORNING COM 690742101 324,304 136,396 72.59 21,702 88.19 0.2467
2017-05-15 2017-03-31 13F OWENS CORNING COM 690742101 187,908 -1,056 -0.56 11,532 18.36 0.1437
2017-02-14 2016-12-31 13F OWENS CORNING COM 690742101 188,964 669 0.36 9,743 -3.08 0.1004
2016-11-14 2016-09-30 13F OWENS CORNING COM 690742101 188,295 -42,105 -18.27 10,053 -15.31 0.1162
2016-08-15 2016-06-30 13F OWENS CORNING COM 690742101 230,400 230,400 11,870 0.2208
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.