DIALF (Dialight) Shiller PE Ratio: (As of Aug. 26, 2026)

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Director of Data and Quant Analytics at GuruFocus
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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.

DIALF Dialight PLC DIALF
49 GF Score
Price $6.38
GF Value $2.06
Valuation Significantly Overvalued
! 7 Warning Signs
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What is Dialight Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Dialight  (OTCPK:DIALF) 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.


Dialight Shiller PE Ratio Related Terms


Dialight Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Dialight'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.

Dialight Shiller PE Ratio Chart

Dialight Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Mar25 Mar26
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 80.66 0.00 0.00 0.00 0.00

Dialight Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Sep24 Mar25 Sep25 Mar26
Shiller PE Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

DIALF vs VRT, BE: Shiller PE Ratio Comparison

For the Electrical Equipment & Parts subindustry, Dialight'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.


Dialight Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Dialight's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Dialight's Shiller PE Ratio falls into.


DIALF
49GF Score
Dialight PLC DIALF
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Dialight Shiller PE Ratio Calculation

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.

Dialight's E10 for the fiscal year that ended in Mar26 is calculated as:

For example, Dialight's adjusted earnings per share data for the fiscal year that ended in Mar26 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Mar26 (Change)*Current CPI (Mar26)
=0.01/140.8000*140.8000
=0.010

Current CPI (Mar26) = 140.8000.

Dialight Annual Data

Earnings per Share (Diluted) CPI Adj_EPS
201612 -0.104 102.200 -0.143
201712 0.065 105.000 0.087
201812 0.204 107.100 0.268
201912 -0.649 108.500 -0.842
202012 -0.331 109.400 -0.426
202112 0.012 114.700 0.015
202212 0.015 125.300 0.017
202312 -0.396 130.500 -0.427
202503 -0.347 136.100 -0.359
202603 0.010 140.800 0.010

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.

Is Dialight (DIALF) Overvalued in 2026?

Based on GuruFocus' analysis, Dialight stock appears to be overvalued. The current stock price of $6.38 is trading 209.7% above its estimated GF Value™ of $2.06. GuruFocus considers Dialight to be Significantly Overvalued.

Key valuation signals for DIALF:

  • Shiller PE Ratio:
  • GF Value™: $2.06 vs. price of $6.38 (209.7% above fair value)
  • GF Score™: 49/100 with 7 warning signs

No single metric tells the full story. See the DIALF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Dialight Business Description

Other Exchanges DIAl:UKDIA:UK3HQ:Germany
Address 60 Petty France, London, GBR, SW1H 9EU
Dialight PLC manufactures and sells light-emitting diode (LED) lighting fixtures for use in hazardous and industrial locations. It provides lighting products to customers in industrial sectors including steel foundries, pulp and paper mills, automotive manufacturers, utility, and wastewater plants, and food and beverage processing plants. In addition, it provides specialist lighting products for hazardous industrial sites, including the oil and gas and mining sectors. Its segments are Lighting, Signals, and Components. The majority of the revenue is derived from the sale of LED lighting solutions and anti-collision obstruction lighting. Geographically it derives the majority of its revenue from North America.
49GF Score

Get the complete analysis for DIALF

Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$6.38
Price
$2.06
GF Value