Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionRitholtz Wealth Management
Latest Disclosed Ownership9,667 shares
Latest Disclosed Value $ 1,046,164
Ritholtz Wealth Management reports 5.35% decrease in ownership of OC / Owens Corning

On April 20, 2026 - Ritholtz Wealth Management filed a 13F-HR form disclosing ownership of 9,667 shares of Owens Corning (US:OC) valued at $1,046,163 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 10,213 shares of Owens Corning. This represents a change in shares of -5.35% during the quarter. The current value of the position is $1,161,587 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)
2026-04-20 2026-03-31 13F OWENS CORNING COM 690742101 9,667 -546 -5.35 1,046 -8.41 0.0181
2026-01-23 2025-12-31 13F OWENS CORNING COM 690742101 10,213 -2,052 -16.73 1,143 -34.14 0.0209
2025-10-28 2025-09-30 13F OWENS CORNING COM 690742101 12,265 -3,725 -23.30 1,735 -21.11 0.0337
2025-07-28 2025-06-30 13F OWENS CORNING COM 690742101 15,990 -1,623 -9.21 2,199 -12.60 0.0485
2025-04-17 2025-03-31 13F OWENS CORNING COM 690742101 17,613 1,214 7.40 2,515 -9.95 0.0751
2025-01-15 2024-12-31 13F OWENS CORNING COM 690742101 16,399 466 2.92 2,793 -0.68 0.0820
2024-10-10 2024-09-30 13F OWENS CORNING COM 690742101 15,933 302 1.93 2,813 3.57 0.0848
2024-08-01 2024-06-30 13F OWENS CORNING COM 690742101 15,631 1,711 12.29 2,715 16.98 0.0896
2024-04-24 2024-03-31 13F OWENS CORNING COM 690742101 13,920 381 2.81 2,322 15.70 0.0801
2024-01-18 2023-12-31 13F OWENS CORNING COM 690742101 13,539 -155 -1.13 2,007 7.39 0.0779
2023-10-13 2023-09-30 13F OWENS CORNING COM 690742101 13,694 -590 -4.13 1,868 0.21 0.0839
2023-07-17 2023-06-30 13F OWENS CORNING COM 690742101 14,284 612 4.48 1,864 42.40 0.0839
2023-04-20 2023-03-31 13F OWENS CORNING COM 690742101 13,672 4,602 50.74 1,310 69.34 0.0653
2023-01-19 2022-12-31 13F OWENS CORNING COM 690742101 9,070 2,855 45.94 774 58.08 0.0432
2022-10-19 2022-09-30 13F OWENS CORNING COM 690742101 6,215 2,176 53.87 489 63.00 0.0260
2022-07-15 2022-06-30 13F OWENS CORNING COM 690742101 4,039 4,039 300 0.0189
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.