Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Gibraltar IndustriesROCK -2.15%69 Days Inventory is 64.80 as of Jun. 2026, which is 37% above its 10-year median of 47.38. GuruFocus rates ROCK with a GF Score™ of 69/100 and a GF Value™ of $91.87 (Possible Value Trap). The stock has 4 warning signs investors should review. Among 1,497 Construction companies, Gibraltar Industries ranks worse than 54.51% on this metric.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Gibraltar Industries's Inventory Turnover for the
three
months ended in Jun. 2026 was 1.41.
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.
Gibraltar Industries's Inventory-to-Revenue for the
three
months ended in Jun. 2026 was 0.53.
Gibraltar Industries (NAS: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.
Gibraltar Industries's Inventory Turnover for the
three
months ended in Jun. 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.
Gibraltar Industries's Inventory to Revenue for the
three
months ended in Jun. 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.
Gibraltar Industries Days Inventory Related Terms
Gibraltar Industries Days Inventory Historical Data
* Premium members only.
The historical data trend for Gibraltar Industries'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.
ROCK vs ARLO, NPKI, LMB: Days Inventory Comparison
For the Building Products & Equipment subindustry, Gibraltar Industries'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.
Gibraltar Industries Days Inventory vs Construction Industry
For the Construction industry and Industrials sector, Gibraltar Industries's Days Inventory distribution charts can be found below:
* The bar in red indicates where Gibraltar Industries'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.
Gibraltar Industries (ROCK) has a Days Inventory of 64.80 as of Jun. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Gibraltar Industries and its competitors. This is 37% above median its historical median of 47.38. Over the past decade, Gibraltar Industries' Days Inventory has ranged from 37.68 to 69.38. According to the industry distribution chart, Gibraltar Industries ranks #816 out of 1497 companies in the Construction industry, placing it in the top 54.5%.
Is Gibraltar Industries' Days Inventory too high?
Gibraltar Industries' current Days Inventory of 64.80 is 37% above median its 10-year median of 47.38. Over the past 10 years, this metric has ranged from a low of 37.68 to a high of 69.38. The Construction industry median Days Inventory is 49.78. Gibraltar Industries' value of 64.80 is 30.2% above this industry median. Based on the distribution chart, Gibraltar Industries ranks #816 out of 1497 companies in the Construction industry, which is below the industry midpoint. Overall, Gibraltar Industries has a GF Score™ of 69/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Gibraltar Industries' Days Inventory compare to ARLO and NPKI?
According to the Construction industry distribution chart, Gibraltar Industries ranks #816 out of 1497 companies for Days Inventory. This places Gibraltar Industries in the lower half of its industry. The industry median Days Inventory is 49.78. Gibraltar Industries' value of 64.80 is 30.2% above this benchmark. Historically, Gibraltar Industries' own Days Inventory has ranged from 37.68 to 69.38 over the past decade. While the company's 10-year median is 47.38 vs. the industry median of 49.78, Gibraltar Industries 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 49.78, based on 1,497 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. Gibraltar Industries's current Days Inventory of 64.80 is 30.2% 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 Gibraltar Industries and its competitors. For the Construction industry, the median Days Inventory is 49.78 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Gibraltar Industries's current Days Inventory is 64.80, which is 37% above median its own 10-year median of 47.38. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Gibraltar Industries stock overvalued right now?
Based on GuruFocus' analysis, Gibraltar Industries (ROCK) is currently considered Possible Value Trap. The stock's GF Value™ is $91.87, compared to a current price of $47.88 — trading 47.9% below its estimated fair value. The current Days Inventory is 64.80, which is 37% above median its 10-year median of 47.38 and 30.2% above the Construction industry median of 49.78. Gibraltar Industries' overall GF Score™ is 69/100 with 4 warning signs 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 Gibraltar Industries (ROCK), the current Days Inventory is 64.80 as of Jun. 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 Gibraltar Industries (ROCK) Overvalued in 2026?
Based on GuruFocus' analysis, Gibraltar Industries stock appears to be undervalued.
The current stock price of $47.88 is trading 47.9% below its estimated GF Value™ of $91.87.
GuruFocus considers Gibraltar Industries to be Possible Value Trap.
Key valuation signals for ROCK:
Days Inventory: 64.80 (37% above median its 10-year median of 47.38)
GF Value™: $91.87 vs. price of $47.88 (47.9% below fair value)
Industry Position: 30.2% above the Construction median (#816 of 1497)
No single metric tells the full story. See the ROCK stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Gibraltar Industries Inc manufactures and provides products and services for the Renewable energy, Residential, Agtech, and Infrastructure markets. The Renewable Segment is engaged in designing, engineering, manufacturing, and installing solar racking and electrical balance systems. Agtech Segment provides growing and processing solutions including the designing, engineering, manufacturing, full-scope construction, maintenance, and support of greenhouses and indoor growing operations, and botanical extraction systems. It derives key revenue from the Residential segment which offers roof and foundation ventilation products, single point and centralized mail systems electronic package solutions, and Retractable awnings and gutter guards, among other products.
69GF Score
Get the complete analysis for ROCK
Days Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCK has been successfully added to your 
