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Gibraltar IndustriesROCK -3.77%74 Shiller PE Ratio is 21.25 as of Sep. 09, 2026, which is 48% below its 10-year median of 40.86. GuruFocus rates ROCK with a GF Score™ of 74/100 and a GF Value™ of $94.54 (Possible Value Trap). The stock has 4 warning signs investors should review. Among 1,041 Construction companies, Gibraltar Industries ranks worse than 61.67% on this metric.
The historical rank and industry rank for Gibraltar Industries's Shiller PE Ratio or its related term are showing as below:
ROCK'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 16.26 Med: 40.86 Max: 2333.5
Current: 21.25
During the past years, Gibraltar Industries's highest Shiller PE Ratio was 2333.50. The lowest was 16.26. And the median was 40.86.
ROCK's Shiller PE Ratio is ranked worse than 61.67% of 1041
companies
in the Construction industry
Industry Median: 16.99
vs ROCK: 21.25
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Gibraltar Industries's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.280. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $2.15 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Gibraltar Industries (NAS:ROCK) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Gibraltar Industries Shiller PE Ratio Related Terms
Gibraltar Industries Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Gibraltar Industries's Shiller PE Ratio 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, NX: Shiller PE Ratio Comparison
For the Building Products & Equipment subindustry, Gibraltar Industries's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio 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 Shiller PE Ratio vs Construction Industry
For the Construction industry and Industrials sector, Gibraltar Industries's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Gibraltar Industries's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
* 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.
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Gibraltar Industries (ROCK) has a Shiller PE Ratio of 21.25 as of Sep. 09, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Gibraltar Industries and its competitors. This is 48% below median its historical median of 40.86. Over the past decade, Gibraltar Industries' Shiller PE Ratio has ranged from 16.26 to 2,333.50. According to the industry distribution chart, Gibraltar Industries ranks #642 out of 1041 companies in the Construction industry, placing it in the top 61.7%.
Is Gibraltar Industries' Shiller PE Ratio too high?
Gibraltar Industries' current Shiller PE Ratio of 21.25 is 48% below median its 10-year median of 40.86. Over the past 10 years, this metric has ranged from a low of 16.26 to a high of 2,333.50. The Construction industry median Shiller PE Ratio is 16.99. Gibraltar Industries' value of 21.25 is 25.1% above this industry median. Based on the distribution chart, Gibraltar Industries ranks #642 out of 1041 companies in the Construction industry, which is below the industry midpoint. Overall, Gibraltar Industries has a GF Score™ of 74/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Gibraltar Industries' Shiller PE Ratio compare to ARLO and NPKI?
According to the Construction industry distribution chart, Gibraltar Industries ranks #642 out of 1041 companies for Shiller PE Ratio. This places Gibraltar Industries in the lower half of its industry. The industry median Shiller PE Ratio is 16.99. Gibraltar Industries' value of 21.25 is 25.1% above this benchmark. Historically, Gibraltar Industries' own Shiller PE Ratio has ranged from 16.26 to 2,333.50 over the past decade. While the company's 10-year median is 40.86 vs. the industry median of 16.99, 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 Shiller PE Ratio for a Construction company?
The median Shiller PE Ratio among Construction companies is 16.99, based on 1,041 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Gibraltar Industries's current Shiller PE Ratio of 21.25 is 25.1% 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Gibraltar Industries and its competitors. For the Construction industry, the median Shiller PE Ratio is 16.99 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Gibraltar Industries's current Shiller PE Ratio is 21.25, which is 48% below median its own 10-year median of 40.86. 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 $94.54, compared to a current price of $45.69 — trading 51.7% below its estimated fair value. The current Shiller PE Ratio is 21.25, which is 48% below median its 10-year median of 40.86 and 25.1% above the Construction industry median of 16.99. Gibraltar Industries' overall GF Score™ is 74/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Gibraltar Industries (ROCK), the current Shiller PE Ratio is 21.25 as of Sep. 09, 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 $45.69 is trading 51.7% below its estimated GF Value™ of $94.54.
GuruFocus considers Gibraltar Industries to be Possible Value Trap.
Key valuation signals for ROCK:
Shiller PE Ratio: 21.25 (48% below median its 10-year median of 40.86)
GF Value™: $94.54 vs. price of $45.69 (51.7% below fair value)
Industry Position: 25.1% above the Construction median (#642 of 1041)
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.
74GF Score
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