RELL (Richardson Electronics) E10: $0.25 (As of May. 2026)

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RELL Richardson Electronics Ltd RELL
62 GF Score
Price $18.00
GF Value $11.80
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Richardson Electronics E10?

Richardson Electronics RELL -4.90% 62 E10 is $0.25 as of May. 2026. GuruFocus rates RELL with a GF Score™ of 62/100 and a GF Value™ of $11.80 (Significantly Overvalued). The stock has 5 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

Richardson Electronics's adjusted earnings per share data for the three months ended in May. 2026 was $0.250. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is $0.25 for the trailing ten years ended in May. 2026.

During the past 12 months, Richardson Electronics's average E10 Growth Rate was 108.30% per year. During the past 3 years, the average E10 Growth Rate was 60.90% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Richardson Electronics was 76.90% per year. The lowest was -47.70% per year. And the median was 3.20% per year.

As of today (2026-08-20), Richardson Electronics's current stock price is $18.00. Richardson Electronics's E10 for the quarter that ended in May. 2026 was $0.25. Richardson Electronics's Shiller PE Ratio of today is 72.00.

During the past 13 years, the highest Shiller PE Ratio of Richardson Electronics was 744.00. The lowest was 7.55. And the median was 18.73.


Richardson Electronics  (NAS:RELL) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, 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 P/E is also called PE10.

The Shiller P/E was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

Richardson Electronics's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=18.00/0.25
=72.00

* 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.

During the past 13 years, the highest Shiller P/E Ratio of Richardson Electronics was 744.00. The lowest was 7.55. And the median was 18.73.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


Richardson Electronics E10 Related Terms


Richardson Electronics E10 Historical Data

* Premium members only.

The historical data trend for Richardson Electronics's E10 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.

Richardson Electronics E10 Chart

Richardson Electronics Annual Data
Trend May17 May18 May19 May20 May21 May22 May23 May24 May25 May26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only -0.08 0.06 0.07 0.12 0.25

Richardson Electronics Quarterly Data
Aug21 Nov21 Feb22 May22 Aug22 Nov22 Feb23 May23 Aug23 Nov23 Feb24 May24 Aug24 Nov24 Feb25 May25 Aug25 Nov25 Feb26 May26
E10 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 0.12 0.15 0.17 0.21 0.25

RELL vs OPTX, MPTI, KULR: E10 Comparison

For the Electronic Components subindustry, Richardson Electronics'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.


Richardson Electronics Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Richardson Electronics's Shiller PE Ratio distribution charts can be found below:

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


RELL
62GF Score
Richardson Electronics Ltd RELL
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Richardson Electronics E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

We adjusted the earnings of 2001 earnings data with the total inflation from 2001 through 2010 to the equivalent earnings in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart earned $1 a share in 2001, then the 2001's equivalent earnings in 2010 is $1.4 a share. If Wal-Mart earns $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 earnings in 2010 is $1.35. So on and so forth, you get the equivalent earnings of past 10 years. Then you add them together and divided the sum by 10 to get 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.

For example, Richardson Electronics's adjusted earnings per share data for the three months ended in May. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of May. 2026 (Change)*Current CPI (May. 2026)
=0.25/335.1230*335.1230
=0.250

Current CPI (May. 2026) = 335.1230.

Richardson Electronics Quarterly Data

per share eps CPI Adj_EPS
201608 -0.230 240.849 -0.320
201611 -0.200 241.353 -0.278
201702 -0.110 243.603 -0.151
201705 -0.010 244.733 -0.014
201708 -0.010 245.519 -0.014
201711 0.130 246.669 0.177
201802 0.040 248.991 0.054
201805 0.130 251.588 0.173
201808 0.030 252.146 0.040
201811 -0.020 252.038 -0.027
201902 -0.080 252.776 -0.106
201905 -0.500 256.092 -0.654
201908 0.010 256.558 0.013
201911 -0.050 257.208 -0.065
202002 -0.010 258.678 -0.013
202005 -0.100 256.394 -0.131
202008 -0.090 259.918 -0.116
202011 0.050 260.229 0.064
202102 0.020 263.014 0.025
202105 0.130 269.195 0.162
202108 0.200 273.567 0.245
202111 0.300 277.948 0.362
202202 0.210 283.716 0.248
202205 0.590 292.296 0.676
202208 0.470 296.171 0.532
202211 0.390 297.711 0.439
202302 0.440 300.840 0.490
202305 0.270 304.127 0.298
202308 0.090 307.026 0.098
202311 -0.130 307.051 -0.142
202402 0.050 310.326 0.054
202405 -0.010 314.069 -0.011
202408 0.040 314.796 0.043
202411 -0.050 315.493 -0.053
202502 -0.150 319.082 -0.158
202505 0.080 321.465 0.083
202508 0.130 323.976 0.134
202511 -0.010 324.122 -0.010
202602 0.070 326.785 0.072
202605 0.250 335.123 0.250

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of $0.25 mean?
Richardson Electronics (RELL) has a E10 of $0.25 as of May. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Richardson Electronics and its competitors.
Is Richardson Electronics' E10 too high?
Richardson Electronics' current E10 is $0.25. Overall, Richardson Electronics has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Richardson Electronics' E10 compare to OPTX and MPTI?
Richardson Electronics' E10 of $0.25 can be compared against companies in the Hardware industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for a Hardware company?
A good E10 depends on the Hardware industry context. However, E10 should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Richardson Electronics and its competitors. Richardson Electronics's current E10 is $0.25. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Richardson Electronics stock overvalued right now?
Based on GuruFocus' analysis, Richardson Electronics (RELL) is currently considered Significantly Overvalued. The stock's GF Value™ is $11.80, compared to a current price of $18.00 — trading 52.5% above its estimated fair value. The current E10 is $0.25. Richardson Electronics' overall GF Score™ is 62/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For Richardson Electronics (RELL), the current E10 is $0.25 as of May. 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 Richardson Electronics (RELL) Overvalued in 2026?

Based on GuruFocus' analysis, Richardson Electronics stock appears to be overvalued. The current stock price of $18.00 is trading 52.5% above its estimated GF Value™ of $11.80. GuruFocus considers Richardson Electronics to be Significantly Overvalued.

Key valuation signals for RELL:

  • E10: $0.25
  • GF Value™: $11.80 vs. price of $18.00 (52.5% above fair value)
  • GF Score™: 62/100 with 5 warning signs

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


Richardson Electronics Business Description

Other Exchanges RE3:Germany
Address 40W267 Keslinger Road, P.O. Box 393, LaFox, IL, USA, 60147-0393
Richardson Electronics Ltd provides engineered solutions, power grid, and microwave tubes and related consumables, power conversion, RF and microwave components, high-value flat panel detector solutions, replacement parts, tubes, and service training for diagnostic imaging equipment and customized display solutions. The company's segment includes Power and Microwave Technologies, Green Energy Solutions, Canvys, and Healthcare. The company generates the majority of its revenue from the Power and Microwave Technologies segment, which includes the power grid and microwave tube business and RF, Wireless and Power technologies.
62GF Score

Get the complete analysis for RELL

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$18.00
Price
$11.80
GF Value