RTARF (Restar) Shiller PE Ratio: 20.14 (As of Sep. 02, 2026) — 35% Below Median

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RTARF Restar Corp RTARF
78 GF Score
Price $14.30
GF Value $9.53
! 6 Warning Signs
View Full Analysis

What is Restar Shiller PE Ratio?

Restar RTARF 78 Shiller PE Ratio is 20.14 as of Sep. 02, 2026, which is 35% below its 10-year median of 30.76. GuruFocus rates RTARF with a GF Score™ of 78/100 and a GF Value™ of $9.53. The stock has 6 warning signs investors should review. Among 543 Semiconductors companies, Restar ranks better than 53.04% on this metric.

As of today (2026-09-02), Restar's current share price is $14.30. Restar's E10 for the quarter that ended in Mar. 2026 was $0.71. Restar's Shiller PE Ratio for today is 20.14.

The historical rank and industry rank for Restar's Shiller PE Ratio or its related term are showing as below:

RTARF' s Shiller PE Ratio Range Over the Past 10 Years
Min: 13.87   Med: 30.76   Max: 65.18
Current: 39.4

During the past years, Restar's highest Shiller PE Ratio was 65.18. The lowest was 13.87. And the median was 30.76.

RTARF's Shiller PE Ratio is ranked better than
53.04% of 543 companies
in the Semiconductors industry
Industry Median: 41.89 vs RTARF: 39.40

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.

Restar's adjusted earnings per share data for the three months ended in Mar. 2026 was $0.874. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.71 for the trailing ten years ended in Mar. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Restar  (OTCPK:RTARF) 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.


Restar Shiller PE Ratio Related Terms


Restar Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Restar'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.

Restar Shiller PE Ratio Chart

Restar Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 26.87 33.67 52.57 40.36 20.11

Restar Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 51.09 56.63 57.83 20.11 0.00

RTARF vs NVDA, AVGO, MU: Shiller PE Ratio Comparison

For the Semiconductors subindustry, Restar'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.


Restar Shiller PE Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Restar's Shiller PE Ratio distribution charts can be found below:

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


RTARF
78GF Score
Restar Corp RTARF
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Restar 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.

Restar's Shiller PE Ratio for today is calculated as

Shiller PE Ratio=Share Price/ E10
=14.30/0.71
=20.14

* 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.

Restar's E10 for the quarter that ended in Mar. 2026 is calculated as:

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

Adj_EPS=Earnings per Share (Diluted)/CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.874/112.7000*112.7000
=0.874

Current CPI (Mar. 2026) = 112.7000.

Restar Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201606 -0.200 98.100 -0.230
201609 -0.493 98.000 -0.567
201612 -1.179 98.400 -1.350
201703 -3.061 98.100 -3.517
201706 0.362 98.500 0.414
201709 0.461 98.800 0.526
201712 0.534 99.400 0.605
201803 -0.150 99.200 -0.170
201806 0.519 99.200 0.590
201809 0.622 99.900 0.702
201812 0.446 99.700 0.504
201903 -0.335 99.700 -0.379
201906 1.092 99.800 1.233
201909 0.321 100.100 0.361
201912 0.364 100.500 0.408
202003 -0.018 100.300 -0.020
202006 0.231 99.900 0.261
202009 0.390 99.900 0.440
202012 1.693 99.300 1.921
202103 -0.983 99.900 -1.109
202106 0.761 99.500 0.862
202109 0.433 100.100 0.488
202112 0.427 100.100 0.481
202203 0.152 101.100 0.169
202206 0.547 101.800 0.606
202209 0.552 103.100 0.603
202212 0.310 104.100 0.336
202303 0.302 104.400 0.326
202306 0.159 105.200 0.170
202309 0.601 106.200 0.638
202312 0.324 106.800 0.342
202403 0.494 107.200 0.519
202406 0.633 108.200 0.659
202409 0.318 108.900 0.329
202412 0.237 110.700 0.241
202503 0.496 111.100 0.503
202506 0.086 111.700 0.087
202509 0.314 112.000 0.316
202512 0.488 113.000 0.487
202603 0.874 112.700 0.874

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.

Frequently Asked Questions Learn more about Shiller PE Ratio →
What does a Shiller PE Ratio of 20.14 mean?
Restar (RTARF) has a Shiller PE Ratio of 20.14 as of Sep. 02, 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 Restar and its competitors. This is 35% below median its historical median of 30.76. Over the past decade, Restar's Shiller PE Ratio has ranged from 13.87 to 65.18. According to the industry distribution chart, Restar ranks #255 out of 543 companies in the Semiconductors industry, placing it in the top 47%.
Is Restar's Shiller PE Ratio too high?
Restar's current Shiller PE Ratio of 20.14 is 35% below median its 10-year median of 30.76. Over the past 10 years, this metric has ranged from a low of 13.87 to a high of 65.18. The Semiconductors industry median Shiller PE Ratio is 41.89. Restar's value of 20.14 is 51.9% below this industry median. Based on the distribution chart, Restar ranks #255 out of 543 companies in the Semiconductors industry, which is above the industry midpoint. Overall, Restar has a GF Score™ of 78/100, reflecting its overall financial health beyond just this single metric.
How does Restar's Shiller PE Ratio compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Restar ranks #255 out of 543 companies for Shiller PE Ratio. This puts Restar in the upper half of its industry. The industry median Shiller PE Ratio is 41.89. Restar's value of 20.14 is 51.9% below this benchmark. Historically, Restar's own Shiller PE Ratio has ranged from 13.87 to 65.18 over the past decade. While the company's 10-year median is 30.76 vs. the industry median of 41.89, Restar 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 Semiconductors company?
The median Shiller PE Ratio among Semiconductors companies is 41.89, based on 543 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. Restar's current Shiller PE Ratio of 20.14 is 51.9% 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 Restar and its competitors. For the Semiconductors industry, the median Shiller PE Ratio is 41.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Restar's current Shiller PE Ratio is 20.14, which is 35% below median its own 10-year median of 30.76. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Restar stock overvalued right now?
Restar (RTARF) has a current Shiller PE Ratio of 20.14. The stock's GF Value™ is $9.53, compared to a current price of $14.30 — trading 50.1% above its estimated fair value. The current Shiller PE Ratio is 20.14, which is 35% below median its 10-year median of 30.76 and 51.9% below the Semiconductors industry median of 41.89. Restar's overall GF Score™ is 78/100 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 Restar (RTARF), the current Shiller PE Ratio is 20.14 as of Sep. 02, 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 Restar (RTARF) Overvalued in 2026?

Based on GuruFocus' analysis, Restar stock appears to be overvalued. The current stock price of $14.30 is trading 50.1% above its estimated GF Value™ of $9.53.

Key valuation signals for RTARF:

  • Shiller PE Ratio: 20.14 (35% below median its 10-year median of 30.76)
  • GF Value™: $9.53 vs. price of $14.30 (50.1% above fair value)
  • GF Score™: 78/100 with 6 warning signs
  • Industry Position: 51.9% below the Semiconductors median (#255 of 543)

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


Restar Business Description

Other Exchanges 3156:Japan
Address Lester Building, 10-9 Konan 2-chome, Minato-ku, Tokyo, JPN, 108-0075
Restar Corp manufactures and distributes semiconductors and electronic components. The company offers semiconductors/modules, optical components, displays, industrial lasers, sensors, measuring instruments/filters, batteries, quartz crystal devices, adhesive materials/optical materials, and speakers/receivers. It also provides electronic manufacturing services.
78GF Score

Get the complete analysis for RTARF

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

$14.30
Price
$9.53
GF Value