Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Renaissance Technologies Llc closes position in OC / Owens Corning

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 0 shares of Owens Corning (US:OC) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 72,100 shares of Owens Corning. The current value of the position is $0 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)
2026-05-14 2026-03-31 13F OWENS CORNING COM 690742101 0 -100.00 0
2026-02-12 2025-12-31 13F OWENS CORNING COM 690742101 72,100 -103,100 -58.85 8,069 -67.45
2025-11-13 2025-09-30 13F OWENS CORNING COM 690742101 175,200 172,400 6,157.14 24,784 6,337.14 0.0327
2025-08-13 2025-06-30 13F OWENS CORNING COM 690742101 2,800 2,800 385 0.0005
2024-08-09 2024-06-30 13F OWENS CORNING COM 690742101 0 -55,200 -100.00 0 -100.00
2024-05-13 2024-03-31 13F OWENS CORNING COM 690742101 55,200 -44,800 -44.80 9 -35.71 0.0145
2024-02-13 2023-12-31 13F OWENS CORNING COM 690742101 100,000 100,000 15 0.0229
2023-05-12 2023-03-31 13F OWENS CORNING COM 690742101 0 -184,900 -100.00 0 -100.00
2023-02-13 2022-12-31 13F OWENS CORNING COM 690742101 184,900 -152,600 -45.21 16 -99.94 0.0216
2022-11-14 2022-09-30 13F OWENS CORNING COM 690742101 337,500 -31,759 -8.60 26,531 -3.31 0.0375
2022-08-12 2022-06-30 13F OWENS CORNING COM 690742101 369,259 286,459 345.96 27,440 262.20 0.0325
2022-05-13 2022-03-31 13F OWENS CORNING COM 690742101 82,800 -293,100 -77.97 7,576 -77.73 0.0089
2022-02-11 2021-12-31 13F OWENS CORNING COM 690742101 375,900 -167,900 -30.88 34,019 -26.83 0.0423
2021-11-12 2021-09-30 13F OWENS CORNING COM 690742101 543,800 277,400 104.13 46,495 78.27 0.0601
2021-08-13 2021-06-30 13F OWENS CORNING COM 690742101 266,400 266,400 26,081 0.0326
2020-02-12 2019-12-31 13F OWENS CORNING COM 690742101 0 -211,700 -100.00 0 -100.00
2019-11-13 2019-09-30 13F OWENS CORNING COM 690742101 211,700 211,700 13,379 0.0113
2019-08-12 2019-06-30 13F OWENS CORNING COM 690742101 0 -508,600 -100.00 0 -100.00
2019-05-14 2019-03-31 13F OWENS CORNING COM 690742101 508,600 268,600 111.92 23,965 127.05 0.0218
2019-02-12 2018-12-31 13F OWENS CORNING COM 690742101 240,000 -304,500 -55.92 10,555 -64.28 0.0116
2018-11-13 2018-09-30 13F OWENS CORNING COM 690742101 544,500 -459,210 -45.75 29,550 -53.54 0.0304
2018-08-13 2018-06-30 13F/A-1 OWENS CORNING COM 690742101 1,003,710 424,710 73.35 63,605 36.63 0.0693
2018-08-13 2018-06-30 13F OWENS CORNING COM 690742101 579,000 46,552
2018-05-14 2018-03-31 13F OWENS CORNING COM 690742101 579,000 -252,900 -30.40 46,552 -39.14 0.0509
2018-02-13 2017-12-31 13F OWENS CORNING COM 690742101 831,900 -209,700 -20.13 76,485 -5.07 0.0843
2017-11-13 2017-09-30 13F OWENS CORNING COM 690742101 1,041,600 331,000 46.58 80,568 69.43 0.0948
2017-08-11 2017-06-30 13F OWENS CORNING COM 690742101 710,600 -459,200 -39.25 47,553 -33.76 0.0607
2017-05-12 2017-03-31 13F OWENS CORNING COM 690742101 1,169,800 488,500 71.70 71,791 104.37 0.1003
2017-02-13 2016-12-31 13F OWENS CORNING COM 690742101 681,300 435,500 177.18 35,128 167.68 0.0556
2016-11-14 2016-09-30 13F OWENS CORNING COM 690742101 245,800 -298,500 -54.84 13,123 -53.20 0.0232
2016-08-12 2016-06-30 13F OWENS CORNING COM 690742101 544,300 165,200 43.58 28,042 56.45 0.0534
2016-05-13 2016-03-31 13F OWENS CORNING COM 690742101 379,100 379,100 -30.35 17,924 -36.08 0.0341
2016-02-11 2015-12-31 13F OWENS CORNING COM 690742101 0 -55,410 -100.00 0 -100.00
2014-05-14 2014-03-31 13F OWENS CORNING COM 690742101 55,410 -14,990 -21.29 2,392 -16.57 0.0057
2014-02-14 2013-12-31 13F OWENS CORNING COM 690742101 70,400 -22,500 -24.22 2,867 -18.74 0.0069
2013-11-13 2013-09-30 13F OWENS CORNING COM 690742101 92,900 92,900 3,528 0.0086
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.