Who owns Owens Corning (OC)
Which tracked institutional funds hold OC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OC company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on OC is one-sided between 2026-Q1 and 2026-Q2: 283 added or opened and 89 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
OC’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes OC more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in OC divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 643 tracked filers holding OC, 354 increased or opened the position and 330 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in OC between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 29
- Nykredit A/S$229M
- DEPRINCE RACE & ZOLLO INC$45M
- Jupiter Topco LLC$30M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$30M
- Lombard Odier Asset Management (Europe) Ltd$23M
- BRIGHTLINE CAPITAL MANAGEMENT, LLC$13M
Full exits 62
- LSV ASSET MANAGEMENT$158M
- DekaBank Deutsche Girozentrale$56M
- D. E. Shaw & Co., Inc.$54M
- VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.$46M
- SG Americas Securities, LLC$39M
- Amundi$31M
Largest adds
- BlackRock, Inc.$563M
- AQR CAPITAL MANAGEMENT LLC$307M
- VANGUARD PORTFOLIO MANAGEMENT LLC$273M
- FIRST TRUST ADVISORS LP$225M
- VANGUARD CAPITAL MANAGEMENT LLC$186M
- DIMENSIONAL FUND ADVISORS LP$170M
Largest trims
- MILLENNIUM MANAGEMENT LLC$35M
- TWO SIGMA INVESTMENTS, LP$21M
- FEDERATED HERMES, INC.$13M
- SummitTX Capital, L.P.$10M
- Connor, Clark & Lunn Investment Management Ltd.$8M
- VAN ECK ASSOCIATES CORP$6M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 8,814,550 | $1.4B | 11.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 5,468,670 | $869M | 7.3% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 3,679,060 | $578M | 4.9% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 3,630,191 | $577M | 4.9% | 2026-Q2 |
| STATE STREET CORP added | 3,097,509 | $492M | 4.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 2,951,985 | $469M | 4.0% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 2,899,702 | $461M | 3.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 2,255,518 | $359M | 3.0% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 2,218,358 | $353M | 3.0% | 2026-Q2 |
| DAVIS SELECTED ADVISERS trimmed | 2,081,213 | $331M | 2.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,925,106 | $325M | 2.7% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 1,689,068 | $268M | 2.3% | 2026-Q2 |
| Nykredit A/S new | 1,439,490 | $229M | 1.9% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB added | 1,255,057 | $199M | 1.7% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 1,217,226 | $193M | 1.6% | 2026-Q2 |
| NORGES BANK trimmed | 1,103,877 | $175M | 1.5% | 2026-Q2 |
| HARRIS ASSOCIATES L P added | 1,095,517 | $174M | 1.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 1,066,825 | $167M | 1.4% | 2026-Q2 |
| GENDELL JEFFREY L added | 1,007,315 | $160M | 1.4% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC trimmed | 1,001,380 | $151M | 1.3% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 957,875 | $152M | 1.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 840,997 | $134M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 777,568 | $124M | 1.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 723,481 | $115M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 715,474 | $114M | 1.0% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 714,742 | $114M | 1.0% | 2026-Q2 |
| Clean Energy Transition LLP added | 705,286 | $112M | 0.9% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 678,232 | $108M | 0.9% | 2026-Q2 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 587,383 | $92M | 0.8% | 2026-Q2 |
| Sound Shore Management Inc /CT/ trimmed | 584,629 | $93M | 0.8% | 2026-Q2 |
| FMR LLC added | 584,425 | $93M | 0.8% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 579,516 | $92M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 577,688 | $92M | 0.8% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 531,102 | $84M | 0.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 529,658 | $84M | 0.7% | 2026-Q2 |
| DEUTSCHE BANK AG\ trimmed | 518,994 | $82M | 0.7% | 2026-Q2 |
| BANQUE PICTET & CIE SA added | 510,971 | $81M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 509,634 | $81M | 0.7% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 469,629 | $75M | 0.6% | 2026-Q2 |
| LGT Group Foundation added | 463,578 | $74M | 0.6% | 2026-Q2 |
| UBS Group AG added | 447,335 | $71M | 0.6% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 443,573 | $48M | 0.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 432,385 | $69M | 0.6% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 416,306 | $66M | 0.6% | 2026-Q2 |
| Gotham Asset Management, LLC trimmed | 400,722 | $64M | 0.5% | 2026-Q2 |
| River Road Asset Management, LLC trimmed | 340,103 | $54M | 0.5% | 2026-Q2 |
| Lodge Hill Capital, LLC trimmed | 337,870 | $54M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 336,187 | $53M | 0.5% | 2026-Q2 |
| Bank Pictet & Cie (Europe) AG added | 312,173 | $50M | 0.4% | 2026-Q2 |
| Callodine Capital Management, LP trimmed | 290,130 | $46M | 0.4% | 2026-Q2 |
| Swedbank AB trimmed | 289,357 | $46M | 0.4% | 2026-Q2 |
| DEPRINCE RACE & ZOLLO INC new | 285,846 | $45M | 0.4% | 2026-Q2 |
| Raiffeisen Bank International AG added | 281,808 | $44M | 0.4% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 270,107 | $43M | 0.4% | 2026-Q2 |
| MARSHALL WACE, LLP added | 249,080 | $40M | 0.3% | 2026-Q2 |
| GREAT LAKES ADVISORS, LLC trimmed | 235,628 | $37M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 226,274 | $36M | 0.3% | 2026-Q2 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 225,264 | $36M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 224,495 | $36M | 0.3% | 2026-Q2 |
| CINCINNATI INSURANCE CO | 212,000 | $34M | 0.3% | 2026-Q2 |
| CINCINNATI FINANCIAL CORP | 209,000 | $33M | 0.3% | 2026-Q2 |
| BARCLAYS PLC added | 206,046 | $33M | 0.3% | 2026-Q2 |
| Kimelman & Baird, LLC trimmed | 195,925 | $31M | 0.3% | 2026-Q2 |
| Jupiter Topco LLC new | 188,052 | $30M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 186,452 | $30M | 0.3% | 2026-Q2 |
| NAN FUNG TRINITY (HK) LTD added | 186,324 | $30M | 0.3% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 186,000 | $30M | 0.2% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 183,688 | $29M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 175,909 | $28M | 0.2% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 174,338 | $28M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 172,488 | $27M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 172,329 | $27M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 164,834 | $26M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 161,300 | $26M | 0.2% | 2026-Q2 |
| Invenomic Capital Management LP trimmed | 160,637 | $26M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 156,739 | $25M | 0.2% | 2026-Q2 |
| Triodos Investment Management BV | 156,000 | $25M | 0.2% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC trimmed | 152,215 | $24M | 0.2% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD added | 150,006 | $24M | 0.2% | 2026-Q2 |
| ANTIPODES PARTNERS Ltd trimmed | 148,726 | $24M | 0.2% | 2026-Q2 |
| Lombard Odier Asset Management (Europe) Ltd new | 143,945 | $23M | 0.2% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 141,142 | $22M | 0.2% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 135,370 | $22M | 0.2% | 2026-Q2 |
| Distillate Capital Partners LLC trimmed | 133,194 | $21M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 130,381 | $21M | 0.2% | 2026-Q2 |
| EDMOND DE ROTHSCHILD HOLDING S.A. added | 130,000 | $21M | 0.2% | 2026-Q2 |
| Robeco Institutional Asset Management B.V. trimmed | 125,397 | $20M | 0.2% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 123,188 | $20M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 121,351 | $19M | 0.2% | 2026-Q2 |
| CREDIT AGRICOLE S A added | 119,902 | $19M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 119,608 | $19M | 0.2% | 2026-Q2 |
| Candriam S.C.A. added | 118,952 | $19M | 0.2% | 2026-Q2 |
| RWC Asset Management LLP added | 115,381 | $18M | 0.2% | 2026-Q2 |
| Mariner, LLC added | 114,879 | $18M | 0.2% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 114,687 | $18M | 0.2% | 2026-Q2 |
| Skylands Capital, LLC trimmed | 114,440 | $18M | 0.2% | 2026-Q2 |
| ARGA Investment Management, LP trimmed | 110,797 | $18M | 0.1% | 2026-Q2 |
| BCV Asset Management Inc. trimmed | 104,466 | $16M | 0.1% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 100,127 | $16M | 0.1% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 96,712 | $15M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.