OC Owens Corning: institutional ownership and insider trading
744 funds reported holding $14.3B of Owens Corning in their latest 13F filings; in Q2 2026 funds net bought $240M, with 127 new positions and 71 funds selling out; over the last 12 months insiders bought $0 and sold $447K on the open market.
Famous investors holding OC
- Two Sigma (Two Sigma Investments): $84.2M, 0.1% of the portfolio
- Izzy Englander (Millennium Management): $68.7M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $19.3M, 0.0% of the portfolio
Largest institutional holders of OC
- BlackRock, Inc. (BLK) — $1.40B
- VANGUARD GROUP INC — $1.09B
- VANGUARD PORTFOLIO MANAGEMENT LLC — $869M
- AQR CAPITAL MANAGEMENT LLC — $578M
- VANGUARD CAPITAL MANAGEMENT LLC — $577M
- STATE STREET CORP (STT, STT-PG) — $492M
- DIMENSIONAL FUND ADVISORS LP — $469M
- FIRST TRUST ADVISORS LP — $461M
- AMERICAN CENTURY COMPANIES INC — $359M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC — $353M
Recent OC insider trades
- Aug 28, 2026: Marcon Rachel Barthelemy sold 900 shares ($130K)
- May 28, 2026: Marcon Rachel Barthelemy sold 700 shares ($84.5K)
- May 8, 2026: Doerfler Mari sold 1,926 shares ($233K)
- Aug 12, 2025: Doerfler Mari sold 441 shares ($65.7K)
5%+ owners
- BlackRock, Inc.: 10.0% (Schedule 13G/A, filed Jun 4, 2026)
- Vanguard Portfolio Management: 6.9% (Schedule 13G, filed Apr 29, 2026)
- Vanguard Capital Management: 5.3% (Schedule 13G, filed Apr 30, 2026)