Owens Corning (NYSE: OC), an SEC filer in Abrasive, Asbestos & Misc Nonmetallic Mineral Prods, closed at $143.13, -0.4%, on 2026-08-28, with a market cap of $11.4B as of 2026-08-27, a return on equity of -11.7%, a net margin of -5.2% and 3-year sales growth of 1.2%. Institutional ownership, earnings history and filed financials are on the tabs below.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9,210,8649.2M | $997M | 11.46% | — |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 5,508,1215.5M | $596M | 6.85% | NEW† |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 3,618,0283.6M | $392M | 4.50% | NEW† |
| 4 | STATE STREET CORP | 3,064,3043.1M | $334M | 3.81% | — |
| 5 | DIMENSIONAL FUND ADVISORS LP | 2,764,6162.8M | $299M | 3.44% | ADD 7% |
| 6 | AQR CAPITAL MANAGEMENT LLC | 2,540,0232.5M | $271M | 3.16% | ADD 77% |
| 7 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2,219,3352.2M | $240M | 2.76% | ADD 73% |
| 8 | FIRST TRUST ADVISORS LP | 2,179,2142.2M | $236M | 2.71% | ADD 23% |
| 9 | Davis Selected Adviserstracked | 2,100,9352.1M | $227M | 2.61% | ADD 3% |
| 10 | AMERICAN CENTURY COMPANIES INC | 2,042,5022.0M | $221M | 2.54% | ADD 550% |
† NEW this big is usually a rename.
Ranked by each filer’s own reported value, not shares.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | +5,508,121 | $596M | OPEN |
| VANGUARD CAPITAL MANAGEMENT LLC | +3,618,028 | $392M | OPEN |
| AMERICAN CENTURY COMPANIES INC | +1,728,035 | $187M | ADD |
| AQR CAPITAL MANAGEMENT LLC | +1,107,377 | $120M | ADD |
| Allspring Global Investments Holdings, LLC | +1,027,800 | $111M | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| VANGUARD GROUP INC | −9,765,729 | $1.1B | CLOSE |
| PRICE T ROWE ASSOCIATES INC /MD/ | −1,070,400 | $116M | TRIM |
| NORGES BANK | −1,070,035 | $116M | CLOSE |
| APPALOOSA LP | −950,000 | $103M | CLOSE |
| FMR LLC | −668,074 | $72M | TRIM |
Prior quarter split-rebased · 13Fs are long, US-listed only.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 10.5M | 10.9M | 10.7M | 10.7M | 9.4M | 9.2M | $997M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | — | — | — | — | — | 5.5M | $596M |
| VANGUARD CAPITAL MANAGEMENT LLC | — | — | — | — | — | 3.6M | $392M |
| STATE STREET CORP | 3.8M | 3.7M | 3.6M | 3.6M | 3.1M | 3.1M | $334M |
| DIMENSIONAL FUND ADVISORS LP | 1.7M | 1.6M | 1.8M | 1.9M | 2.6M | 2.8M | $299M |
| AQR CAPITAL MANAGEMENT LLC | 682K | 562K | 961K | 1.2M | 1.4M | 2.5M | $271M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 740K | 697K | 685K | 1.1M | 1.3M | 2.2M | $240M |
| FIRST TRUST ADVISORS LP | 745K | 348K | 921K | 1.2M | 1.8M | 2.2M | $236M |
| Davis Selected Adviserstracked | 1.8M | 1.8M | 1.8M | 1.8M | 2.0M | 2.1M | $227M |
| AMERICAN CENTURY COMPANIES INC | 254K | 271K | 248K | 276K | 314K | 2.0M | $221M |
Green = added, red = trimmed, grey = held; a dash is a quarter with no 13F on file — a gap, not an exit.
Breaks = no 13F that quarter.
Short interest has its own tab now — open SI →
SEC Form 13F · ~10,250 filers, 10y · long-only, US-listed, filed ≤45d after quarter-end.
SEC Schedule 13D/G XML · group aggregate.
