Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionStrs Ohio
Latest Disclosed Ownership1,951 shares
Latest Disclosed Value $ 211,137
Strs Ohio reports 1.86% decrease in ownership of OC / Owens Corning

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 1,951 shares of Owens Corning (US:OC) valued at $211,137 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 1,988 shares of Owens Corning. This represents a change in shares of -1.86% during the quarter. The current value of the position is $234,822 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)
2026-04-24 2026-03-31 13F OWENS CORNING COM_STK 690742101 1,951 -37 -1.86 211 -4.95 0.0008
2026-02-02 2025-12-31 13F OWENS CORNING COM_STK 690742101 1,988 -42 -2.07 222 -22.65 0.0008
2025-10-30 2025-09-30 13F OWENS CORNING COM_STK 690742101 2,030 -10,020 -83.15 287 -82.68 0.0011
2025-08-04 2025-06-30 13F OWENS CORNING COM_STK 690742101 12,050 1,274 11.82 1,657 7.67 0.0062
2025-05-28 2025-03-31 13F OWENS CORNING COM_STK 690742101 10,776 -2,218 -17.07 1,539 -30.46 0.0064
2025-05-28 2024-12-31 13F OWENS CORNING COM_STK 690742101 12,994 871 7.18 2,213 3.46 0.0088
2024-11-01 2024-09-30 13F OWENS CORNING COM_STK 690742101 12,123 718 6.30 2,140 7.98 0.0082
2024-08-05 2024-06-30 13F OWENS CORNING COM_STK 690742101 11,405 -1,869 -14.08 1,981 98,950.00 0.0078
2024-05-13 2024-03-31 13F OWENS CORNING COM_STK 690742101 13,274 -102 -0.76 2 100.00 0.0088
2024-01-30 2023-12-31 13F OWENS CORNING COM 690742101 13,376 -1,510 -10.14 2 -50.00 0.0083
2023-10-26 2023-09-30 13F/A-1 OWENS CORNING COM 690742101 14,886 -827 -5.26 2 0.00 0.0090
2023-10-26 2023-09-30 13F OWENS CORNING COM 690742101 14,886 2
2023-07-31 2023-06-30 13F OWENS CORNING COM 690742101 15,713 -4,883 -23.71 2 100.00 0.0087
2023-08-02 2023-03-31 13F/A-2 OWENS CORNING COM 690742101 20,596 -19 -0.09 2 0.00 0.0085
2023-08-02 2023-03-31 13F/A-1 OWENS CORNING COM 690742101 20,596 2
2023-04-27 2023-03-31 13F OWENS CORNING COM 690742101 20,596 -19 2 0.0102
2023-01-26 2022-12-31 13F OWENS CORNING COM 690742101 20,615 485 2.41 2 -99.94 0.0079
2022-10-27 2022-09-30 13F OWENS CORNING COM 690742101 20,130 -1,991 -9.00 1,582 -3.71 0.0075
2022-07-25 2022-06-30 13F OWENS CORNING COM 690742101 22,121 4,930 28.68 1,643 4.52 0.0074
2022-04-21 2022-03-31 13F OWENS CORNING COM 690742101 17,191 -3,769 -17.98 1,572 -17.09 0.0058
2022-01-24 2021-12-31 13F OWENS CORNING COM 690742101 20,960 309 1.50 1,896 7.42 0.0066
2021-10-22 2021-09-30 13F OWENS CORNING COM 690742101 20,651 -2,184 -9.56 1,765 -21.03 0.0066
2021-07-26 2021-06-30 13F OWENS CORNING COM 690742101 22,835 -2,345 -9.31 2,235 -3.58 0.0080
2021-04-23 2021-03-31 13F OWENS CORNING COM 690742101 25,180 1,991 8.59 2,318 32.00 0.0087
2021-01-25 2020-12-31 13F OWENS CORNING COM 690742101 23,189 3,575 18.23 1,756 30.17 0.0068
2020-12-14 2020-09-30 13F OWENS CORNING COM 690742101 19,614 2,846 16.97 1,349 44.43 0.0056
2020-07-23 2020-06-30 13F OWENS CORNING COM 690742101 16,768 -3,381 -16.78 934 19.59 0.0041
2020-04-23 2020-03-31 13F OWENS CORNING COM 690742101 20,149 6,974 52.93 781 -8.87 0.0041
2020-01-24 2019-12-31 13F OWENS CORNING COM 690742101 13,175 5,550 72.79 857 78.17 0.0036
2019-10-21 2019-09-30 13F/A-1 OWENS CORNING COM 690742101 7,625 238 3.22 481 12.12 0.0021
2019-10-21 2019-09-30 13F OWENS CORNING COM 690742101 7,625 -5,550 481 2,128.9327
2019-07-25 2019-06-30 13F OWENS CORNING COM 690742101 7,387 6,027 443.16 429 570.31 0.0019
2019-04-19 2019-03-31 13F OWENS CORNING COM 690742101 1,360 0 0.00 64 8.47 0.0003
2019-01-23 2018-12-31 13F OWENS CORNING COM 690742101 1,360 0 0.00 59 -19.18 0.0003
2018-10-19 2018-09-30 13F OWENS CORNING COM 690742101 1,360 -6,144 -81.88 73 -84.63 0.0003
2018-08-06 2018-06-30 13F OWENS CORNING COM 690742101 7,504 6,144 451.76 475 335.78 0.0020
2018-04-20 2018-03-31 13F OWENS CORNING COM 690742101 1,360 -45 -3.20 109 -15.50 0.0005
2018-01-23 2017-12-31 13F OWENS CORNING COM 690742101 1,405 1,405 129 0.0006
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.