| OC Market Cap History Table | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Below is a table of the OC market cap history going back to 1/31/2010:
Also see: OC Shares Outstanding History and OC YTD Return |
OC Market Cap History — Owens Corning Capitalization Over Time
As of 5/1/2026 Owens Corning has a market cap of 9.88 billion. Investors often follow the OC market cap history to compare the size of the company over time.
This page shows OC market capitalization trends over time, with 67 market cap datapoints presented, dating back to 1/31/2010.
| OC Market Cap History Chart | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
OC Historical Market Cap: +7.01% CAGR 
Mouse over chart for data details
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| OC Stock Price Chart |
| About Owens Corning |
| Owens Corning is a provider of building and construction materials. Co.'s four integrated businesses include Roofing, Insulation, Doors, and Composites. Its Roofing business manufactures and sells residential roofing shingles, oxidized asphalt materials, and roofing components used in residential and commercial construction and specialty applications. Its Insulation business manufactures and sells thermal and acoustical batts, loosefill insulation, spray foam insulation, foam sheathing and accessories. We show 67 historical shares outstanding datapoints in our OC shares outstanding history coverage, used to compute OC market cap on those dates. Understanding the changing numbers of shares outstanding, the changing share price, and the resulting changing OC market cap history over the course of time is important for investors interested in comparing OC's market cap history versus its peers. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies, and then calculating their respective market caps. Comparing the share price of OC versus a peer is one thing; comparing OC market cap versus a peer is a completely different story. Furthermore, via fluctuation both in per-share price and in the number of shares outstanding (via issuance of new shares over time, the repurchase of existing shares), the market cap for a company like OC can fluctuate over the course of history. With this page we aim to empower investors researching OC by allowing them to research the OC market cap history. |
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| Video: The Importance of Market Cap | |
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Video: The Importance of Market Cap
| OC Share Performance |
| Market Cap Peers |
| Owens Corning (OC) is categorized under the Materials sector; to help you further research historical market cap numbers, below are some other companies in the same sector:
OCIP Market Cap History OCTO Market Cap History OI Market Cap History OLN Market Cap History OMN Market Cap History ORBS Market Cap History PAAS Market Cap History PACK Market Cap History PAH Market Cap History PAK Market Cap History More Materials companies » |
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