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Inspecs GroupLSE:SPEC 44 Shiller PE Ratio is 0.56 as of Sep. 06, 2026, which is 14% above its 10-year median of 0.49. GuruFocus rates LSE:SPEC with a GF Score™ of 44/100 and a GF Value™ of £0.59 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 311 Medical Devices & Instruments companies, Inspecs Group ranks better than 99.68% on this metric.
As of today (2026-09-06), Inspecs Group's current share price is £0.96. Inspecs Group's E10 for the fiscal year that ended in Dec25 was £1.71. Inspecs Group's Shiller PE Ratio for today is 0.56.
The historical rank and industry rank for Inspecs Group's Shiller PE Ratio or its related term are showing as below:
LSE:SPEC'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 0.4 Med: 0.49 Max: 0.59
Current: 0.56
During the past 10 years, Inspecs Group's highest Shiller PE Ratio was 0.59. The lowest was 0.40. And the median was 0.49.
LSE:SPEC's Shiller PE Ratio is ranked better than 99.68% of 311
companies
in the Medical Devices & Instruments industry
Industry Median: 25.89
vs LSE:SPEC: 0.56
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.
Inspecs Group's adjusted earnings per share data of for the fiscal year that ended in Dec25 was £-0.094. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is £1.71 for the trailing ten years ended in Dec25.
Shiller PE for Stocks: The True Measure of Stock Valuation
Inspecs Group (LSE:SPEC) 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.
Inspecs Group Shiller PE Ratio Related Terms
Inspecs Group Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Inspecs Group'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.
LSE:SPEC vs ISRG, BDX, RMD: Shiller PE Ratio Comparison
For the Medical Instruments & Supplies subindustry, Inspecs Group'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.
Inspecs Group Shiller PE Ratio vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Inspecs Group's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Inspecs Group'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.
Inspecs Group's Shiller PE Ratio for today 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.
Inspecs Group's E10 for the fiscal year that ended in Dec25 is calculated as:
For example, Inspecs Group's adjusted earnings per share data for the fiscal year that ended in Dec25 was:
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.
Inspecs Group (LSE:SPEC) has a Shiller PE Ratio of 0.56 as of Sep. 06, 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 Inspecs Group and its competitors. This is 14% above median its historical median of 0.49. Over the past decade, Inspecs Group's Shiller PE Ratio has ranged from 0.40 to 0.59. According to the industry distribution chart, Inspecs Group ranks #1 out of 311 companies in the Medical Devices & Instruments industry, placing it in the top 0.3%.
Is Inspecs Group's Shiller PE Ratio too high?
Inspecs Group's current Shiller PE Ratio of 0.56 is 14% above median its 10-year median of 0.49. Over the past 10 years, this metric has ranged from a low of 0.40 to a high of 0.59. The Medical Devices & Instruments industry median Shiller PE Ratio is 25.89. Inspecs Group's value of 0.56 is 97.8% below this industry median. Based on the distribution chart, Inspecs Group ranks #1 out of 311 companies in the Medical Devices & Instruments industry, which is in the top quartile — a strong position relative to peers. Overall, Inspecs Group has a GF Score™ of 44/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Inspecs Group's Shiller PE Ratio compare to ISRG and BDX?
According to the Medical Devices & Instruments industry distribution chart, Inspecs Group ranks #1 out of 311 companies for Shiller PE Ratio. This places Inspecs Group in the top 0% of its industry — outperforming the majority of peers. The industry median Shiller PE Ratio is 25.89. Inspecs Group's value of 0.56 is 97.8% below this benchmark. Historically, Inspecs Group's own Shiller PE Ratio has ranged from 0.40 to 0.59 over the past decade. While the company's 10-year median is 0.49 vs. the industry median of 25.89, Inspecs Group 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 a Medical Devices & Instruments company?
The median Shiller PE Ratio among Medical Devices & Instruments companies is 25.89, based on 311 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. Inspecs Group's current Shiller PE Ratio of 0.56 is 97.8% 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 Inspecs Group and its competitors. For the Medical Devices & Instruments industry, the median Shiller PE Ratio is 25.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Inspecs Group's current Shiller PE Ratio is 0.56, which is 14% above median its own 10-year median of 0.49. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Inspecs Group stock overvalued right now?
Based on GuruFocus' analysis, Inspecs Group (LSE:SPEC) is currently considered Significantly Overvalued. The stock's GF Value™ is £0.59, compared to a current price of £0.96 — trading 62.7% above its estimated fair value. The current Shiller PE Ratio is 0.56, which is 14% above median its 10-year median of 0.49 and 97.8% below the Medical Devices & Instruments industry median of 25.89. Inspecs Group's overall GF Score™ is 44/100 with 6 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 Inspecs Group (LSE:SPEC), the current Shiller PE Ratio is 0.56 as of Sep. 06, 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 Inspecs Group (LSE:SPEC) Overvalued in 2026?
Based on GuruFocus' analysis, Inspecs Group stock appears to be overvalued.
The current stock price of £0.96 is trading 62.7% above its estimated GF Value™ of £0.59.
GuruFocus considers Inspecs Group to be Significantly Overvalued.
Key valuation signals for LSE:SPEC:
Shiller PE Ratio: 0.56 (14% above median its 10-year median of 0.49)
GF Value™: £0.59 vs. price of £0.96 (62.7% above fair value)
Industry Position: 97.8% below the Medical Devices & Instruments median (#1 of 311)
No single metric tells the full story. See the LSE:SPEC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Inspecs Group PLC is a designer and manufacturer of eyewear frames and accessories. The customers of the company include optical and Non-optical retailers, distributors, and independent opticians. The company operations are spread across the United Kingdom, Europe (excluding the UK), South America, North America, Asia, Africa, and Australia. Its eyewear brands include Superdry, Titanflex, O'Neill, Brendel, Humphreys, Marc O'Polo, and among others. The reporting segments of the company are Frames and Optics product distribution which derives maximum revenue, and Manufacturing includes OEM and manufacturing distribution segment.
44GF Score
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