Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionCerity Partners LLC
Latest Disclosed Ownership37,199 shares
Latest Disclosed Value $ 4,025,805
Cerity Partners LLC reports 104.83% increase in ownership of OC / Owens Corning

On May 15, 2026 - Cerity Partners LLC filed a 13F-HR form disclosing ownership of 37,199 shares of Owens Corning (US:OC) valued at $4,025,676 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 18,161 shares of Owens Corning. This represents a change in shares of 104.83% during the quarter. The current value of the position is $4,477,272 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 37,199 19,038 104.83 4,026 98.08 0.0057
2026-02-11 2025-12-31 13F OWENS CORNING COM 690742101 18,161 -96 -0.53 2,032 -21.30 0.0030
2025-10-22 2025-09-30 13F OWENS CORNING COM 690742101 18,257 885 5.09 2,583 8.12 0.0042
2025-08-13 2025-06-30 13F OWENS CORNING Stock 690742101 17,372 12,966 294.28 2,389 279.65 0.0043
2025-04-30 2025-03-31 13F OWENS CORNING Stock 690742101 4,406 340 8.36 629 -10.91 0.0013
2025-02-13 2024-12-31 13F OWENS CORNING Stock 690742101 4,066 -1,139 -21.88 707 -23.09 0.0015
2024-11-12 2024-09-30 13F OWENS CORNING Stock 690742101 5,205 -1,234 -19.16 919 -17.89 0.0020
2024-08-13 2024-06-30 13F OWENS CORNING Stock 690742101 6,439 -3,932 -37.91 1,119 -35.34 0.0029
2024-05-14 2024-03-31 13F OWENS CORNING Stock 690742101 10,371 5,211 100.99 1,730 126.31 0.0046
2024-01-26 2023-12-31 13F OWENS CORNING Stock 690742101 5,160 945 22.42 765 33.10 0.0025
2023-11-14 2023-09-30 13F OWENS CORNING Equities 690742101 4,215 4,215 575 0.0028
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.