Owens Corning
US ˙ NYSE ˙ US6907421019

SecurityOC / Owens Corning
InstitutionAllianz Asset Management GmbH
Latest Disclosed Ownership27,295 shares
Latest Disclosed Value $ 2,953,865
Allianz Asset Management GmbH reports 83.27% decrease in ownership of OC / Owens Corning

On May 11, 2026 - Allianz Asset Management GmbH filed a 13F-HR form disclosing ownership of 27,295 shares of Owens Corning (US:OC) valued at $2,953,865 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 163,149 shares of Owens Corning. This represents a change in shares of -83.27% during the quarter. The current value of the position is $3,253,564 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 27,295 -135,854 -83.27 2,954 -83.83 0.0012
2026-02-11 2025-12-31 13F OWENS CORNING COM 690742101 163,149 -196,041 -54.58 18,258 -64.07 0.0185
2025-11-04 2025-09-30 13F OWENS CORNING COM 690742101 359,190 -102,900 -22.27 50,811 -20.04 0.0567
2025-07-28 2025-06-30 13F OWENS CORNING COM 690742101 462,090 -141,363 -23.43 63,547 -26.27 0.0760
2025-05-05 2025-03-31 13F OWENS CORNING COM 690742101 603,453 -101,603 -14.41 86,185 -28.23 0.1128
2025-02-03 2024-12-31 13F OWENS CORNING COM 690742101 705,056 -429,680 -37.87 120,085 -40.05 0.1603
2024-11-13 2024-09-30 13F OWENS CORNING COM 690742101 1,134,736 -36,694 -3.13 200,304 -1.57 0.2801
2024-08-13 2024-06-30 13F OWENS CORNING COM 690742101 1,171,430 -92,953 -7.35 203,501 -3.51 0.3014
2024-05-14 2024-03-31 13F OWENS CORNING COM 690742101 1,264,383 206,865 19.56 210,899 34.54 0.3253
2024-02-12 2023-12-31 13F OWENS CORNING COM 690742101 1,057,518 75,594 7.70 156,756 17.03 0.2561
2023-11-13 2023-09-30 13F OWENS CORNING COM 690742101 981,924 -182,803 -15.69 133,944 -11.88 0.2257
2023-08-14 2023-06-30 13F OWENS CORNING COM 690742101 1,164,727 119,536 11.44 151,997 51.80 0.2721
2023-05-11 2023-03-31 13F OWENS CORNING COM 690742101 1,045,191 14,209 1.38 100,129 13.86 0.1776
2023-02-13 2022-12-31 13F OWENS CORNING COM 690742101 1,030,982 -118,911 -10.34 87,943 -2.71 0.1708
2022-11-08 2022-09-30 13F OWENS CORNING COM 690742101 1,149,893 668,768 139.00 90,393 152.83 0.1838
2022-08-12 2022-06-30 13F OWENS CORNING COM 690742101 481,125 127,190 35.94 35,752 10.39 0.0339
2022-05-13 2022-03-31 13F OWENS CORNING COM 690742101 353,935 -1,350 -0.38 32,386 0.76 0.0241
2022-02-11 2021-12-31 13F OWENS CORNING COM 690742101 355,285 130,395 57.98 32,143 67.17 0.0225
2021-11-10 2021-09-30 13F OWENS CORNING COM 690742101 224,890 -11,962 -5.05 19,228 -17.07 0.0150
2021-08-16 2021-06-30 13F OWENS CORNING COM 690742101 236,852 38,684 19.52 23,187 27.06 0.0197
2021-05-13 2021-03-31 13F OWENS CORNING COM 690742101 198,168 58,372 41.76 18,249 72.31 0.0177
2021-02-16 2020-12-31 13F OWENS CORNING COM 690742101 139,796 102,106 270.91 10,591 308.45 0.0105
2020-11-13 2020-09-30 13F OWENS CORNING COM 690742101 37,690 -55,819 -59.69 2,593 -50.27 0.0030
2020-08-14 2020-06-30 13F OWENS CORNING COM 690742101 93,509 -194,439 -67.53 5,214 -53.34 0.0060
2020-05-14 2020-03-31 13F OWENS CORNING COM 690742101 287,948 -51,755 -15.24 11,175 -49.48 0.0150
2020-02-13 2019-12-31 13F OWENS CORNING COM 690742101 339,703 10,747 3.27 22,122 6.41 0.0202
2019-11-13 2019-09-30 13F OWENS CORNING COM 690742101 328,956 -45,422 -12.13 20,790 -4.58 0.0204
2019-08-08 2019-06-30 13F OWENS CORNING COM 690742101 374,378 -51,747 -12.14 21,789 8.52 0.0203
2019-05-13 2019-03-31 13F OWENS CORNING COM 690742101 426,125 -313,600 -42.39 20,079 -38.28 0.0199
2019-04-02 2018-12-31 13F/A-1 OWENS CORNING COM 690742101 739,725 -444,341 -37.53 32,533 -49.37 0.0356
2019-02-13 2018-12-31 13F OWENS CORNING COM 690742101 739,725 -444,341 32,533
2019-04-09 2018-09-30 13F/A-1 OWENS CORNING COM 690742101 1,184,066 -392,438 -24.89 64,259 -35.68 0.0583
2018-11-13 2018-09-30 13F OWENS CORNING COM 690742101 1,184,066 -392,438 64,259
2019-04-09 2018-06-30 13F/A-1 OWENS CORNING COM 690742101 1,576,504 -252,712 -13.82 99,903 -32.07 0.0972
2018-08-13 2018-06-30 13F OWENS CORNING COM 690742101 1,576,504 -252,712 99,903
2019-04-09 2018-03-31 13F/A-2 OWENS CORNING COM 690742101 1,829,216 -64,821 -3.42 147,069 -15.54 0.1407
2018-05-23 2018-03-31 13F/A-1 OWENS CORNING COM 690742101 1,829,216 0 147,069 0.1404
2018-05-14 2018-03-31 13F OWENS CORNING COM 690742101 1,829,216 -64,821 147,069
2019-04-17 2017-12-31 13F/A-1 OWENS CORNING COM 690742101 1,894,037 95,571 5.31 174,137 25.18 0.1378
2018-02-13 2017-12-31 13F OWENS CORNING COM 690742101 1,894,037 95,571 174,137
2019-04-17 2017-09-30 13F/A-1 OWENS CORNING COM 690742101 1,798,466 328,726 22.37 139,112 41.97 0.1208
2017-11-13 2017-09-30 13F OWENS CORNING COM 690742101 1,798,466 328,726 139,112
2019-04-17 2017-06-30 13F/A-1 OWENS CORNING COM 690742101 1,469,740 342,552 30.39 97,986 41.65 0.0948
2017-08-14 2017-06-30 13F OWENS CORNING COM 690742101 1,469,740 342,552 97,986
2019-04-17 2017-03-31 13F/A-1 OWENS CORNING COM 690742101 1,127,188 27,207 2.47 69,176 21.97 0.0679
2017-05-15 2017-03-31 13F OWENS CORNING COM 690742101 1,127,188 27,207 69,176
2019-04-17 2016-12-31 13F/A-2 OWENS CORNING COM 690742101 1,099,981 36,059 3.39 56,715 0.33 0.0510
2017-03-14 2016-12-31 13F/A-1 OWENS CORNING COM 690742101 1,099,981 0 56,715 0.0509
2017-02-13 2016-12-31 13F OWENS CORNING COM 690742101 1,099,981 56,715
2019-04-17 2016-09-30 13F/A-1 OWENS CORNING COM 690742101 1,063,922 439,686 70.44 56,528 75.77 0.0553
2016-11-14 2016-09-30 13F OWENS CORNING COM 690742101 1,063,922 439,686 56,528
2017-01-24 2016-06-30 13F/A-1 OWENS CORNING COM 690742101 624,236 266,500 74.50 32,161 90.14 0.0344
2016-08-12 2016-06-30 13F OWENS CORNING COM 690742101 624,236 32,161
2016-05-13 2016-03-31 13F OWENS CORNING COM 690742101 357,736 336,481 1,583.07 16,914 1,584.66 0.0193
2017-01-24 2015-12-31 13F/A-1 OWENS CORNING COM 690742101 21,255 21,255 0.00 1,004 0.0011
2016-02-16 2015-12-31 13F OWENS CORNING COM 690742101 21,255 1,004
2015-11-13 2015-09-30 13F OWENS CORNING COM 690742101 0 -2,100 -100.00 0 -100.00
2015-09-22 2015-06-30 13F/A-2 OWENS CORNING COM 690742101 2,100 2,100 0.00 89 0.0173
2015-02-17 2014-12-31 13F OWENS CORNING COM 690742101 0 -53,031 -100.00 0 -100.00
2014-11-14 2014-09-30 13F OWENS CORNING COM 690742101 53,031 -333,553 -86.28 1,684 -88.74 0.0020
2014-08-13 2014-06-30 13F OWENS CORNING COM 690742101 386,584 -582,363 -60.10 14,953 -64.25 0.0188
2014-05-28 2014-03-31 13F/A-1 OWENS CORNING COM 690742101 968,947 968,947 255.84 41,829 304.46 0.0503
2014-05-14 2014-03-31 13F OWENS CORNING COM 690742101 968,947 41,829
2014-02-13 2013-12-31 13F OWENS CORNING COM 690742101 0 -272,300 -100.00 0 -100.00
2013-11-14 2013-09-30 13F OWENS CORNING COM 690742101 272,300 0 0.00 10,342 -2.81 0.0137
2013-08-14 2013-06-30 13F OWENS CORNING COM 690742101 272,300 272,300 10,641 0.0151
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.