Owens Corning (OC) Stock

Owens Corning (OC) is a Materials stock trading at $134.20 (as of 2026-09-02), with a market capitalization of $10.81B. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Owens Corning manufactures and markets insulation, roofing, and fiberglass composite materials. It operates through Composites, Insulation, and Roofing segments, selling glass fiber products, insulation solutions for thermal and acoustical uses, and roofing products, with distribution across the United States, Canada, Europe, and other international markets to customers in construction and related industries.

Understand Owens Corning: how it makes money

Owens Corning makes insulation, roofing shingles, and fiberglass composites sold to builders, contractors, and distributors in North America and Europe. Roofing and Insulation together drive roughly 89% of sales, with roofing cycling on weather and repair demand while insulation rides tightening building codes.

Nearly half of revenue comes from roofing, which is more than 80% repair and replacement demand rather than new construction, while insulation volumes get a structural lift from building codes that now require roughly 30% more product per home than ten years ago.

Revenue by segment (latest quarter)
Roofing$1.1B
Insulation$0.9B
Doors$0.5B

Business quality (Weak): Operating margin sits at just 5%, ROE is negative at 14%, and revenue is shrinking 10% year over year. The overall quality signal is Weak, reflecting margin compression, a struggling acquisition, and a cyclical top-line.

Bull case

  • Structural insulation volume tailwind: Insulation requirements per home are now approximately 30% greater than a decade ago, so volume grows even in a flat housing market and is independent of new-build starts.
  • Doors synergies beyond target: Management reported Doors already beat its synergy commitment and identified another $75 million of structural cost improvements, a concrete margin lever for 2026 and beyond.
  • Roofing demand is repair-driven: More than 80% of roofing demand comes from repair and replacement rather than new construction, which cushions the largest segment against housing-start slowdowns.

Bear case

  • Roofing channel inventory overhang: Roofing distributors hold heavier-than-normal inventories after a Q2 purchasing pull-forward, creating a near-term demand gap as channels work down stock before restocking.
  • Doors underperforming on volume: Doors Q2 sales fell 7% and EBITDA declined on lower volumes and higher transportation costs, indicating the acquisition is not yet delivering the top-line value underwriting the deal.
  • One-time Iran cost in Q3: Iran-related net costs are expected to reach approximately $40 million in Q3, a bolt that will compress an already thin 5% operating margin in the coming quarter.
Valuation — source: SEC EDGAR (first-party)
Price$134.20
Market Cap$10.81B
EV / EBITDA20.3
Price / Book2.93
Price / Sales1.10
FCF Yield8.9%
DCF Value (model)$215.31
DCF Upside vs Price60.4%
Profitability & Growth — source: SEC EDGAR
Revenue (TTM)$10.10B
Net Margin-5.2%
Revenue Growth (YoY)-10.5%
EPS Growth (YoY)20.4%
FCF Growth (YoY)53.6%
Financial Health — source: SEC EDGAR
Altman Z-Score2.13 (grey)
Piotroski F-Score3/9 (weak)
Valuation vs Sector & Industry
Sector P/E (Materials)23.9
Industry P/E (Construction Materials)20.2
Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional HolderVANGUARD GROUP INC ($1.09B)
Institutional Holders Tracked10
Congressional Trades (recent)6
Company
SectorMaterials
IndustryConstruction Materials
CEOBrian D. Chambers
Employees25,000
CountryUS
IPO Date2006-11-01

Owens Corning earnings call transcripts

  • OC Q4 FY25 earnings call transcript (reported 2026-02-25) · analysis
  • OC Q2 FY25 earnings call transcript (reported 2025-08-06) · analysis

All OC earnings calls

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OC earnings history · OC institutional & insider holders · OC KPIs & operating metrics · OC financials · OC investor presentations & press releases · OC SEC filings · OC peers · Congress trades · Insider trades · Short interest · Stock screener

Data as of 2026-09-02.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.