UBS ETC on UBS Bloomberg CMCI Corn Index (CORU.L) Stock Analysis & Winston Score
Corticeira Amorim is a Portuguese company and the world's largest producer of cork products. It harvests cork bark from oak trees, mainly in Portugal and Spain, and turns it into wine bottle stoppers, flooring, insulation materials, and aerospace components. Its customers range from global wine producers to construction companies and industrial manufacturers. The company earns revenue by selling cork products across five business units, with wine stoppers being the largest segment. It operates in over 100 countries, generating most of its sales in Europe and the Americas, and its competitive advantage comes from controlling a large share of the global cork supply chain — from raw material harvesting to finished goods. The main growth driver is expanding into technical and industrial cork applications, such as materials used in construction and transportation, but the key risk is long-term pressure from alternative wine closures like screw caps and synthetic stoppers, which could slowly reduce demand for its core stopper business.
Winston Score: 37/100 — Below Average
Below-average fundamentals — multiple weak pillars.
- Quality: Mixed (11/30)
- Growth: Weak (2/20)
- Cash Flow: Weak (2/10)
- Stability: Strong (8/10)
- Valuation: Weak (1/10)
- Ownership: Good (10/15)
Key Facts
Price: $66.96
Market Cap: $8.9B
Sector: Basic Materials
Industry: Paper, Lumber & Forest Products
Exchange: London Stock Exchange



