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.
Insteel IndustriesIIIN -0.49%82 Shiller PE Ratio is 12.60 as of Aug. 28, 2026, which is 42% below its 10-year median of 21.83. GuruFocus rates IIIN with a GF Score™ of 82/100 and a GF Value™ of $38.95 (Modestly Undervalued). The stock has 5 warning signs investors should review. Among 1,813 Industrial Products companies, Insteel Industries ranks better than 82.52% on this metric.
The historical rank and industry rank for Insteel Industries's Shiller PE Ratio or its related term are showing as below:
IIIN'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 10.21 Med: 21.83 Max: 59.56
Current: 12.6
During the past years, Insteel Industries's highest Shiller PE Ratio was 59.56. The lowest was 10.21. And the median was 21.83.
IIIN's Shiller PE Ratio is ranked better than 82.52% of 1813
companies
in the Industrial Products industry
Industry Median: 28.64
vs IIIN: 12.60
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.
Insteel Industries's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.460. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $2.42 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Insteel Industries (NYSE:IIIN) 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.
Insteel Industries Shiller PE Ratio Related Terms
Insteel Industries Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Insteel 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.
IIIN vs MEC, TG, LQMT: Shiller PE Ratio Comparison
For the Metal Fabrication subindustry, Insteel 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.
Insteel Industries Shiller PE Ratio vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Insteel Industries's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Insteel 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.
Insteel Industries (IIIN) has a Shiller PE Ratio of 12.60 as of Aug. 28, 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 Insteel Industries and its competitors. This is 42% below median its historical median of 21.83. Over the past decade, Insteel Industries' Shiller PE Ratio has ranged from 10.21 to 59.56. According to the industry distribution chart, Insteel Industries ranks #317 out of 1813 companies in the Industrial Products industry, placing it in the top 17.5%.
Is Insteel Industries' Shiller PE Ratio too high?
Insteel Industries' current Shiller PE Ratio of 12.60 is 42% below median its 10-year median of 21.83. Over the past 10 years, this metric has ranged from a low of 10.21 to a high of 59.56. The Industrial Products industry median Shiller PE Ratio is 28.64. Insteel Industries' value of 12.60 is 56% below this industry median. Based on the distribution chart, Insteel Industries ranks #317 out of 1813 companies in the Industrial Products industry, which is in the top quartile — a strong position relative to peers. Overall, Insteel Industries has a GF Score™ of 82/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Insteel Industries' Shiller PE Ratio compare to MEC and TG?
According to the Industrial Products industry distribution chart, Insteel Industries ranks #317 out of 1813 companies for Shiller PE Ratio. This places Insteel Industries in the top 18% of its industry — outperforming the majority of peers. The industry median Shiller PE Ratio is 28.64. Insteel Industries' value of 12.60 is 56% below this benchmark. Historically, Insteel Industries' own Shiller PE Ratio has ranged from 10.21 to 59.56 over the past decade. While the company's 10-year median is 21.83 vs. the industry median of 28.64, Insteel Industries has consistently been below 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 an Industrial Products company?
The median Shiller PE Ratio among Industrial Products companies is 28.64, based on 1,813 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. Insteel Industries's current Shiller PE Ratio of 12.60 is 56% below 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 Insteel Industries and its competitors. For the Industrial Products industry, the median Shiller PE Ratio is 28.64 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Insteel Industries's current Shiller PE Ratio is 12.60, which is 42% below median its own 10-year median of 21.83. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Insteel Industries stock overvalued right now?
Based on GuruFocus' analysis, Insteel Industries (IIIN) is currently considered Modestly Undervalued. The stock's GF Value™ is $38.95, compared to a current price of $30.49 — trading 21.7% below its estimated fair value. The current Shiller PE Ratio is 12.60, which is 42% below median its 10-year median of 21.83 and 56% below the Industrial Products industry median of 28.64. Insteel Industries' overall GF Score™ is 82/100 with 5 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 Insteel Industries (IIIN), the current Shiller PE Ratio is 12.60 as of Aug. 28, 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 Insteel Industries (IIIN) Overvalued in 2026?
Based on GuruFocus' analysis, Insteel Industries stock appears to be undervalued.
The current stock price of $30.49 is trading 21.7% below its estimated GF Value™ of $38.95.
GuruFocus considers Insteel Industries to be Modestly Undervalued.
Key valuation signals for IIIN:
Shiller PE Ratio: 12.60 (42% below median its 10-year median of 21.83)
GF Value™: $38.95 vs. price of $30.49 (21.7% below fair value)
Industry Position: 56% below the Industrial Products median (#317 of 1813)
No single metric tells the full story. See the IIIN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Insteel Industries Inc produces and sells prestressed concrete strand (PC strand) and welded wire reinforcement (WWR). PC strand, a high-strength seven-wire cable, is used to strengthen precast concrete in structures like bridges, parking decks, and buildings, enabling longer spans and slimmer designs. WWR includes engineered structural mesh for primary reinforcement, concrete pipe reinforcement for drainage and sewage systems, and standard WWR for crack control in residential and light commercial construction. The company serves markets in the United States and internationally, with the majority of revenue generated in the United States.
82GF Score
Get the complete analysis for IIIN
Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
IIIN has been successfully added to your 
