
ROCKWOOL International A/S
ROCKWOOL International A/S is the global inventor and undisputed leader in stone wool insulation materials, founded in 1909 and headquartered in Hedehusene, Denmark. With annual revenue of EUR 3.88 billion (FY2025), the company operates 50+ manufacturing facilities across 40+ countries, employing approximately 12,000 people. Listed on Nasdaq Copenhagen (ROCK-B), ROCKWOOL's stone wool products—derived from natural volcanic rock—are 100% recyclable and provide exceptional fire protection, thermal insulation, and acoustic performance for buildings worldwide.
Strengths: ROCKWOOL's products offer unique fire resistance capabilities—stone wool withstands temperatures exceeding 1,000°C—making it essential for fire safety compliance in commercial and high-rise construction. The company invested EUR 389 million in decarbonization in 2025, including electric melting production lines, demonstrating industry-leading commitment to carbon-neutral manufacturing. ROCKWOOL's closed-loop recycling system enables take-back of end-of-life stone wool for reprocessing into new products, creating a genuine circular economy moat. The company's 14.7% core EBIT margin demonstrates excellent manufacturing efficiency despite challenging European construction markets.
Weaknesses: ROCKWOOL faced a EUR 392 million non-cash impairment in 2025 when the Russian government forced external management of four local factories, causing net profit to collapse from EUR 550 million to only EUR 28 million. The company's energy-intensive manufacturing process—requiring high-temperature furnaces to melt volcanic rock at 1,500°C—creates significant exposure to European energy price volatility. Competitive pressure from fiberglass insulation manufacturers like Owens Corning and Knauf limits pricing power in commodity thermal insulation segments.Read MoreShow Less
Strengths: ROCKWOOL's products offer unique fire resistance capabilities—stone wool withstands temperatures exceeding 1,000°C—making it essential for fire safety compliance in commercial and high-rise construction. The company invested EUR 389 million in decarbonization in 2025, including electric melting production lines, demonstrating industry-leading commitment to carbon-neutral manufacturing. ROCKWOOL's closed-loop recycling system enables take-back of end-of-life stone wool for reprocessing into new products, creating a genuine circular economy moat. The company's 14.7% core EBIT margin demonstrates excellent manufacturing efficiency despite challenging European construction markets.
Weaknesses: ROCKWOOL faced a EUR 392 million non-cash impairment in 2025 when the Russian government forced external management of four local factories, causing net profit to collapse from EUR 550 million to only EUR 28 million. The company's energy-intensive manufacturing process—requiring high-temperature furnaces to melt volcanic rock at 1,500°C—creates significant exposure to European energy price volatility. Competitive pressure from fiberglass insulation manufacturers like Owens Corning and Knauf limits pricing power in commodity thermal insulation segments.
Listed market data
ROCK-B · CPH · weeklyHistory →- Share price
- DKK 208.20
- 1Y change
- -7.6%
- Recent change
- -1.4%
- Since first close
- -11.8%
- Revenue (TTM)
- EUR$3.9 B (FY2025)
11-04 → 11-05
from 2025-09
Financial history
Full market history- 2026-11DKK 208.20—+4.7%
- 2026-10DKK 198.80—+5.9%
- 2026-09DKK 187.80—-9.4%
- 2026-08DKK 207.20—-0.3%
- 2026-07DKK 207.80—-0.7%
- 2026-06DKK 209.20—+3.4%
- 2026-05DKK 202.40—+9.3%
- 2026-04DKK 185.10—+5.1%
- 2026-03DKK 176.12—-16.0%
- 2026-02DKK 209.55—-1.9%
- 2026-01DKK 213.55—-5.3%
- 2025-12DKK 225.40——
Ownership & Control
Latest available filings- Controlling entity
- Publicly held — no controlling shareholder disclosed
- Company type
- Manufacturer
- Insiders
- 0.00%
- Institutions
- 31.57%(250 holders)
- Free float
- 31.57%
Percentages are of total shares outstanding, aggregated from 13F-style filings via Yahoo Finance. Institutional figures reflect US-filed positions and may undercount owners filing elsewhere. No figure is shown where none is disclosed.
In the press
All coverage →5 latest headlines1- Rockwool Mineral Fiber Batts Market To 2035: Fire Safety and Energy Efficiency Drive Growth - News and Statistics - IndexBoxwww.indexbox.io2026-10-14
- Rockwool stock heads into the open after a double-digit slide - ad-hoc-news.dewww.ad-hoc-news.de2026-10-09
- Rockwool stock heads into the open after closing flat - ad-hoc-news.dewww.ad-hoc-news.de2026-09-24
- Rockwool stock heads into the open after a modest move - ad-hoc-news.dewww.ad-hoc-news.de2026-09-22
- Rockwool stock holds steady as investors eye recent earnings and sponsorship exposure - ad-hoc-news.dewww.ad-hoc-news.de2026-09-21
• Stone wool insulation for buildings and industrial applications
• Thermal and acoustic insulation products
• Fire protection materials
Quick Facts
Headquarters
Hovedgaden 584, Hedehusene, DK-2640, Denmark
Founded
1937
Employees
~12,000
Revenue
EUR$3.9 B (FY2025)
Factories
50+ manufacturing facilities across Europe, North America, Asia
Presence
40
Listing
Nasdaq Copenhagen: ROCK-B
Categories
17 categories · scroll for more
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Data Sources & Methodology
This corporate profile is compiled from publicly available sources including company annual reports, SEC/regulatory filings, official press releases, and verified third-party industry databases. Financial figures reflect the most recent fiscal year disclosures and are cross-validated across multiple independent references.
VerityRank Score is calculated using a proprietary multi-dimensional model evaluating market presence, financial strength, operational scale, innovation capacity, and brand influence. Individual dimension scores are normalized against industry peers and updated quarterly.
Disclaimer: This profile is for informational purposes only. VerityRank makes no warranties regarding completeness or timeliness. This content does not constitute investment advice or endorsement.
Key references: Official Website Nasdaq Copenhagen: ROCK-B , pitchbook.com, matrixbcg.com, matrixbcg.com
