Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership10,614 shares
Latest Disclosed Value $ 1,149,098
Advisor Group Holdings, Inc. reports 6.09% increase in ownership of OC / Owens Corning

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 10,614 shares of Owens Corning (US:OC) valued at $1,148,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,005 shares of Owens Corning. This represents a change in shares of 6.09% during the quarter. The current value of the position is $1,275,378 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)
2026-05-15 2026-03-31 13F OWENS CORNING COM 690742101 10,614 609 6.09 1,149 2.59 0.0010
2026-02-17 2025-12-31 13F OWENS CORNING COM 690742101 10,005 -1,244 -11.06 1,120 -33.01 0.0007
2025-11-14 2025-09-30 13F OWENS CORNING COM 690742101 11,249 193 1.75 1,673 9.93 0.0013
2025-09-04 2025-06-30 13F/A-1 WENS CORNING COM 690742101 11,056 836 8.18 1,521 4.18 0.0027
2025-08-13 2025-06-30 13F WENS CORNING COM 690742101 15,525 5,305 2,623 0.0030
2025-05-12 2025-03-31 13F OWENS CORNING COM 690742101 10,220 -14,239 -58.22 1,460 -64.95 0.0033
2025-06-06 2024-12-31 13F/A-1 OWENS CORNING COM 690742101 24,459 3,047 14.23 4,166 10.24 0.0094
2025-02-07 2024-12-31 13F OWENS CORNING COM 690742101 19,695 -1,717 3,417 0.0087
2024-11-13 2024-09-30 13F OWENS CORNING COM 690742101 21,412 -1,533 -6.68 3,780 -5.19 0.0085
2024-08-13 2024-06-30 13F OWENS CORNING COM 690742101 22,945 6,811 42.22 3,986 48.12 0.0094
2024-05-10 2024-03-31 13F OWENS CORNING COM 690742101 16,134 -21,146 -56.72 2,691 -51.30 0.0060
2024-02-12 2023-12-31 13F OWENS CORNING COM 690742101 37,280 -36,328 -49.35 5,527 -44.97 0.0097
2023-11-13 2023-09-30 13F OWENS CORNING COM 690742101 73,608 41,583 129.85 10,042 141.05 0.0148
2023-08-21 2023-06-30 13F/A-1 OWENS CORNING COM 690742101 32,025 -1,396 -4.18 4,166 29.94 0.0075
2023-08-10 2023-06-30 13F OWENS CORNING COM 690742101 35,263 1,842 4,163 0.0011
2023-05-12 2023-03-31 13F OWENS CORNING COM 690742101 33,421 2,153 6.89 3,207 20.21 0.0060
2023-02-10 2022-12-31 13F OWENS CORNING COM 690742101 31,268 -11,741 -27.30 2,668 -21.12 0.0054
2022-11-14 2022-09-30 13F OWENS CORNING COM 690742101 43,009 256 0.60 3,381 5.10 0.0077
2022-08-10 2022-06-30 13F OWENS CORNING COM 690742101 42,753 3,633 9.29 3,217 7.77 0.0071
2022-05-04 2022-03-31 13F OWENS CORNING COM 690742101 39,120 25,819 194.11 2,985 147.92 0.0058
2022-02-03 2021-12-31 13F OWENS CORNING COM 690742101 13,301 618 4.87 1,204 11.07 0.0023
2021-11-05 2021-09-30 13F OWENS CORNING COM 690742101 12,683 -4,979 -28.19 1,084 -37.41 0.0023
2021-08-02 2021-06-30 13F OWENS CORNING COM 690742101 17,662 -16,029 -47.58 1,732 -44.75 0.0037
2021-05-13 2021-03-31 13F OWENS CORNING COM 690742101 33,691 -2,317 -6.43 3,135 15.00 0.0075
2021-02-10 2020-12-31 13F OWENS CORNING COM 690742101 36,008 961 2.74 2,726 25.56 0.0073
2020-11-12 2020-09-30 13F OWENS CORNING COM 690742101 35,047 163 0.47 2,171 11.50 0.0065
2020-08-14 2020-06-30 13F OWENS CORNING COM 690742101 34,884 382 1.11 1,947 46.50 0.0065
2020-05-18 2020-03-31 13F OWENS CORNING COM 690742101 34,502 34,502 1,329 0.0054
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.