Rafael Microelectronics (ROCO:6568) E10: NT$6.86 (As of Dec. 2025)

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ROCO:6568 Rafael Microelectronics Inc ROCO:6568
72 GF Score
Price NT$154.00
GF Value NT$135.92
Valuation Modestly Overvalued
! 3 Warning Signs
View Full Analysis

What is Rafael Microelectronics E10?

Rafael Microelectronics ROCO:6568 -4.64% 72 E10 is NT$6.86 as of Dec. 2025. GuruFocus rates ROCO:6568 with a GF Score™ of 72/100 and a GF Value™ of NT$135.92 (Modestly Overvalued). The stock has 3 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.

Rafael Microelectronics's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$1.610. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$6.86 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Rafael Microelectronics's average E10 Growth Rate was -2.00% 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.

As of today (2026-07-15), Rafael Microelectronics's current stock price is NT$154.00. Rafael Microelectronics's E10 for the quarter that ended in Dec. 2025 was NT$6.86. Rafael Microelectronics's Shiller PE Ratio of today is 22.45.

During the past 12 years, the highest Shiller PE Ratio of Rafael Microelectronics was 39.50. The lowest was 13.17. And the median was 18.25.


Rafael Microelectronics  (ROCO:6568) 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.

Rafael Microelectronics's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=154.00/6.86
=22.45

* 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 12 years, the highest Shiller P/E Ratio of Rafael Microelectronics was 39.50. The lowest was 13.17. And the median was 18.25.


Be Aware

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


Rafael Microelectronics E10 Related Terms


Rafael Microelectronics E10 Historical Data

* Premium members only.

The historical data trend for Rafael Microelectronics'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.

Rafael Microelectronics E10 Chart

Rafael Microelectronics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 7.00 6.86

Rafael Microelectronics Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
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 7.00 7.10 7.08 6.98 6.86

ROCO:6568 vs NVDA, AVGO, MU: E10 Comparison

For the Semiconductors subindustry, Rafael Microelectronics'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.


Rafael Microelectronics Shiller PE Ratio vs Semiconductors Industry

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

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


ROCO:6568
72GF Score
Rafael Microelectronics Inc ROCO:6568
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Rafael Microelectronics 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, Rafael Microelectronics's adjusted earnings per share data for the three months ended in Dec. 2025 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=1.61/324.0540*324.0540
=1.610

Current CPI (Dec. 2025) = 324.0540.

Rafael Microelectronics Quarterly Data

per share eps CPI Adj_EPS
201603 2.395 238.132 3.259
201606 2.212 241.018 2.974
201609 2.329 241.428 3.126
201612 1.738 241.432 2.333
201703 1.705 243.801 2.266
201706 1.830 244.955 2.421
201709 2.079 246.819 2.730
201712 2.320 246.524 3.050
201803 1.830 249.554 2.376
201806 1.331 251.989 1.712
201809 1.938 252.439 2.488
201812 2.171 251.233 2.800
201903 2.370 254.202 3.021
201906 2.013 256.143 2.547
201909 1.963 256.759 2.477
201912 0.923 256.974 1.164
202003 1.031 258.115 1.294
202006 0.607 257.797 0.763
202009 2.110 260.280 2.627
202012 2.320 260.474 2.886
202103 1.290 264.877 1.578
202106 1.860 271.696 2.218
202109 1.090 274.310 1.288
202112 1.280 278.802 1.488
202203 0.650 287.504 0.733
202206 1.480 296.311 1.619
202209 0.150 296.808 0.164
202212 1.700 296.797 1.856
202303 0.750 301.836 0.805
202306 0.370 305.109 0.393
202309 0.960 307.789 1.011
202312 -0.720 306.746 -0.761
202403 0.900 312.332 0.934
202406 1.170 314.175 1.207
202409 1.040 315.301 1.069
202412 0.690 315.605 0.708
202503 1.260 319.799 1.277
202506 0.160 322.561 0.161
202509 0.940 324.800 0.938
202512 1.610 324.054 1.610

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 NT$6.86 mean?
Rafael Microelectronics (ROCO:6568) has a E10 of NT$6.86 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Rafael Microelectronics and its competitors.
Is Rafael Microelectronics' E10 too high?
Rafael Microelectronics' current E10 is NT$6.86. Overall, Rafael Microelectronics has a GF Score™ of 72/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Rafael Microelectronics' E10 compare to NVDA and AVGO?
Rafael Microelectronics' E10 of NT$6.86 can be compared against companies in the Semiconductors 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 Semiconductors company?
A good E10 depends on the Semiconductors 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 Rafael Microelectronics and its competitors. Rafael Microelectronics's current E10 is NT$6.86. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Rafael Microelectronics stock overvalued right now?
Based on GuruFocus' analysis, Rafael Microelectronics (ROCO:6568) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$135.92, compared to a current price of NT$154.00 — trading 13.3% above its estimated fair value. The current E10 is NT$6.86. Rafael Microelectronics' overall GF Score™ is 72/100 with 3 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 Rafael Microelectronics (ROCO:6568), the current E10 is NT$6.86 as of Dec. 2025. 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 Rafael Microelectronics (ROCO:6568) Overvalued in 2026?

Based on GuruFocus' analysis, Rafael Microelectronics stock appears to be overvalued. The current stock price of NT$154.00 is trading 13.3% above its estimated GF Value™ of NT$135.92. GuruFocus considers Rafael Microelectronics to be Modestly Overvalued.

Key valuation signals for ROCO:6568:

  • E10: NT$6.86
  • GF Value™: NT$135.92 vs. price of NT$154.00 (13.3% above fair value)
  • GF Score™: 72/100 with 3 warning signs

No single metric tells the full story. See the ROCO:6568 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Rafael Microelectronics Business Description

Address Chenggong 12th Street, 8th Floor, No.28, Hsinchu County, Zhubei, TWN, 30264
Rafael Microelectronics Inc engaged in the research and development, design, manufacturing, and marketing of radio frequency integrated circuits (RF ICs), RF integrated systems, and related products. Its products include IOT connectivity, optical networking, satellite communication, STB receivers, and TV receivers. The company's geographical segments include Taiwan, China, Europe and America, and Other parts of Asia.
72GF Score

Get the complete analysis for ROCO:6568

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

NT$154.00
Price
NT$135.92
GF Value