Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionCommerce Bank
Latest Disclosed Ownership58,454 shares
Latest Disclosed Value $ 6,325,891
Commerce Bank reports 1,783.79% increase in ownership of OC / Owens Corning

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 58,454 shares of Owens Corning (US:OC) valued at $6,325,892 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,103 shares of Owens Corning. This represents a change in shares of 1,783.79% during the quarter. The current value of the position is $7,023,833 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)
2026-05-11 2026-03-31 13F OWENS CORNING COM 690742101 58,454 55,351 1,783.79 6,326 1,722.77 0.0130
2026-02-13 2025-12-31 13F OWENS CORNING COM 690742101 3,103 243 8.50 347 -14.11 0.0019
2025-11-12 2025-09-30 13F OWENS CORNING COM 690742101 2,860 -499 -14.86 405 -12.36 0.0023
2025-08-07 2025-06-30 13F OWENS CORNING COM 690742101 3,359 40 1.21 462 -2.74 0.0027
2025-05-08 2025-03-31 13F OWENS CORNING COM 690742101 3,319 19 0.58 474 -15.66 0.0030
2025-02-13 2024-12-31 13F OWENS CORNING COM 690742101 3,300 0 0.00 562 -3.44 0.0035
2024-11-08 2024-09-30 13F OWENS CORNING COM 690742101 3,300 399 13.75 583 15.71 0.0036
2024-08-12 2024-06-30 13F OWENS CORNING COM 690742101 2,901 68 2.40 504 6.57 0.0033
2024-05-03 2024-03-31 13F OWENS CORNING COM 690742101 2,833 5 0.18 473 12.65 0.0031
2024-02-09 2023-12-31 13F OWENS CORNING COM 690742101 2,828 0 0.00 419 8.83 0.0030
2023-11-14 2023-09-30 13F OWENS CORNING COM 690742101 2,828 0 0.00 386 4.34 0.0030
2023-08-08 2023-06-30 13F OWENS CORNING COM 690742101 2,828 0 0.00 369 36.67 0.0028
2023-05-04 2023-03-31 13F OWENS CORNING COM 690742101 2,828 45 1.62 271 13.92 0.0021
2023-02-10 2022-12-31 13F OWENS CORNING COM 690742101 2,783 -70 -2.45 237 5.33 0.0019
2022-11-04 2022-09-30 13F OWENS CORNING COM 690742101 2,853 62 2.22 225 8.70 0.0020
2022-08-12 2022-06-30 13F OWENS CORNING COM 690742101 2,791 -70 -2.45 207 -20.99 0.0017
2022-05-09 2022-03-31 13F OWENS CORNING COM 690742101 2,861 189 7.07 262 8.71 0.0018
2022-02-14 2021-12-31 13F OWENS CORNING COM 690742101 2,672 30 1.14 241 6.64 0.0016
2021-11-09 2021-09-30 13F OWENS CORNING COM 690742101 2,642 268 11.29 226 -2.59 0.0016
2021-08-09 2021-06-30 13F OWENS CORNING COM 690742101 2,374 0 0.00 232 5.94 0.0016
2021-05-05 2021-03-31 13F OWENS CORNING COM 690742101 2,374 -1,354 -36.32 219 -22.34 0.0017
2021-02-09 2020-12-31 13F OWENS CORNING COM 690742101 3,728 3,728 282 0.0023
2020-08-07 2020-06-30 13F OWENS CORNING COM 690742101 0 -7,578 -100.00 0 -100.00
2020-05-08 2020-03-31 13F OWENS CORNING COM 690742101 7,578 2,390 46.07 294 -13.02 0.0036
2020-02-14 2019-12-31 13F OWENS CORNING COM 690742101 5,188 -532 -9.30 338 -6.63 0.0032
2019-11-12 2019-09-30 13F OWENS CORNING COM 690742101 5,720 69 1.22 362 10.03 0.0037
2019-08-07 2019-06-30 13F OWENS CORNING COM 690742101 5,651 150 2.73 329 27.03 0.0037
2019-05-08 2019-03-31 13F OWENS CORNING COM 690742101 5,501 706 14.72 259 22.75 0.0031
2019-02-11 2018-12-31 13F OWENS CORNING COM 690742101 4,795 4,795 211 0.0027
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.