Rockwool ASWBO:ROCK +0.47%63 Days Inventory is 119.73 as of Mar. 2026, which is 33% above its 10-year median of 90.25. GuruFocus rates WBO:ROCK with a GF Score™ of 63/100 and a GF Value™ of €31.58 (Fairly Valued). The stock has 1 warning sign investors should review. Among 1,486 Construction companies, Rockwool AS ranks worse than 71.53% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). Rockwool AS's Average Total Inventories for the
three
months ended in Mar. 2026 was €381 Mil. Rockwool AS's Cost of Goods Sold for the
three
months ended in Mar. 2026 was €290 Mil.
Hence, Rockwool AS's Days Inventory for the
three
months ended in Mar. 2026 was 119.73.
The historical rank and industry rank for Rockwool AS's Days Inventory or its related term are showing as below:
WBO:ROCK'
s Days Inventory Range Over the Past 10 Years
Min: 81.36 Med: 90.25 Max: 115.44
Current: 115.44
During the past 13 years, Rockwool AS's highest Days Inventory was 115.44. The lowest was 81.36. And the median was 90.25.
WBO:ROCK's Days Inventory is ranked worse than 71.53% of 1486
companies
in the Construction industry
Industry Median: 50.81
vs WBO:ROCK: 115.44
Rockwool AS's Days Inventory
declined
from Mar. 2025 (120.37) to Mar. 2026 (119.73).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Rockwool AS's Inventory Turnover for the
three
months ended in Mar. 2026 was 0.76.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Rockwool AS's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.42.
Rockwool AS (WBO:ROCK) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
Rockwool AS's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Rockwool AS's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
Rockwool AS Days Inventory Related Terms
Rockwool AS Days Inventory Historical Data
* Premium members only.
The historical data trend for Rockwool AS's Days Inventory can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
WBO:ROCK vs TT, JCI, CARR: Days Inventory Comparison
For the Building Products & Equipment subindustry, Rockwool AS's Days Inventory, along with its competitors' market caps and Days Inventory data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Rockwool AS Days Inventory vs Construction Industry
For the Construction industry and Industrials sector, Rockwool AS's Days Inventory distribution charts can be found below:
* The bar in red indicates where Rockwool AS's Days Inventory falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Rockwool AS (WBO:ROCK) has a Days Inventory of 119.73 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Rockwool AS and its competitors. This is 33% above median its historical median of 90.25. Over the past decade, Rockwool AS's Days Inventory has ranged from 81.36 to 115.44. According to the industry distribution chart, Rockwool AS ranks #1063 out of 1486 companies in the Construction industry, placing it in the top 71.5%.
Is Rockwool AS's Days Inventory too high?
Rockwool AS's current Days Inventory of 119.73 is 33% above median its 10-year median of 90.25. Over the past 10 years, this metric has ranged from a low of 81.36 to a high of 115.44. The Construction industry median Days Inventory is 50.81. Rockwool AS's value of 119.73 is 135.6% above this industry median. Based on the distribution chart, Rockwool AS ranks #1063 out of 1486 companies in the Construction industry, which is below the industry midpoint. Overall, Rockwool AS has a GF Score™ of 63/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Rockwool AS's Days Inventory compare to TT and JCI?
According to the Construction industry distribution chart, Rockwool AS ranks #1063 out of 1486 companies for Days Inventory. This places Rockwool AS in the lower half of its industry. The industry median Days Inventory is 50.81. Rockwool AS's value of 119.73 is 135.6% above this benchmark. Historically, Rockwool AS's own Days Inventory has ranged from 81.36 to 115.44 over the past decade. While the company's 10-year median is 90.25 vs. the industry median of 50.81, Rockwool AS has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for a Construction company?
The median Days Inventory among Construction companies is 50.81, based on 1,486 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Rockwool AS's current Days Inventory of 119.73 is 135.6% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Rockwool AS and its competitors. For the Construction industry, the median Days Inventory is 50.81 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Rockwool AS's current Days Inventory is 119.73, which is 33% above median its own 10-year median of 90.25. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Rockwool AS stock overvalued right now?
Based on GuruFocus' analysis, Rockwool AS (WBO:ROCK) is currently considered Fairly Valued. The stock's GF Value™ is €31.58, compared to a current price of €29.62 — trading 6.2% below its estimated fair value. The current Days Inventory is 119.73, which is 33% above median its 10-year median of 90.25 and 135.6% above the Construction industry median of 50.81. Rockwool AS's overall GF Score™ is 63/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Rockwool AS (WBO:ROCK), the current Days Inventory is 119.73 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Rockwool AS (WBO:ROCK) Overvalued in 2026?
Based on GuruFocus' analysis, Rockwool AS stock appears to be undervalued.
The current stock price of €29.62 is trading 6.2% below its estimated GF Value™ of €31.58.
GuruFocus considers Rockwool AS to be Fairly Valued.
Key valuation signals for WBO:ROCK:
Days Inventory: 119.73 (33% above median its 10-year median of 90.25)
GF Value™: €31.58 vs. price of €29.62 (6.2% below fair value)
Industry Position: 135.6% above the Construction median (#1063 of 1486)
No single metric tells the full story. See the WBO:ROCK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Rockwool AS manufactures and sells building materials, including insulation and roofing systems. The company organizes itself into two segments based on the product: Insulation and Systems. The Insulation segment, sells building, industrial, and technical insulation and external thermal insulation wall systems to the construction industry. The Systems business sells acoustic ceilings and wall systems, external cladding systems, horticultural substrate solutions, engineered fiber solutions, and noise and vibration control to the construction and automotive industries. The majority of revenue is from the Insulation Segment. The majority of sales come from Europe.
63GF Score
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