Regal Holding Co (TPE:4807) E10: NT$1.44 (As of Dec. 2025)


TPE:4807 Regal Holding Co Ltd TPE:4807
76 GF Score
Price NT$39.70
GF Value NT$27.49
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is Regal Holding Co E10?

Regal Holding Co TPE:4807 +4.20% 76 E10 is NT$1.44 as of Dec. 2025. GuruFocus rates TPE:4807 with a GF Score™ of 76/100 and a GF Value™ of NT$27.49 (Significantly 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.

Regal Holding Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.307. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$1.44 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Regal Holding Co's average E10 Growth Rate was -34.20% 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 (2026-07-07), Regal Holding Co's current stock price is NT$39.70. Regal Holding Co's E10 for the quarter that ended in Dec. 2025 was NT$1.44. Regal Holding Co's Shiller PE Ratio of today is 27.57.

During the past 13 years, the highest Shiller PE Ratio of Regal Holding Co was 30.56. The lowest was 6.91. And the median was 10.12.


Regal Holding Co  (TPE:4807) 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.

Regal Holding Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=39.70/1.44
=27.57

* 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 Regal Holding Co was 30.56. The lowest was 6.91. And the median was 10.12.


Be Aware

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


Regal Holding Co E10 Related Terms


Regal Holding Co E10 Historical Data

* Premium members only.

The historical data trend for Regal Holding Co'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.

Regal Holding Co E10 Chart

Regal Holding Co 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 2.19 1.44

Regal Holding Co 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 2.19 2.14 2.02 1.67 1.44

TPE:4807 vs TPR, SIG, CPRI: E10 Comparison

For the Luxury Goods subindustry, Regal Holding Co'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.


Regal Holding Co Shiller PE Ratio vs Retail - Cyclical Industry

For the Retail - Cyclical industry and Consumer Cyclical sector, Regal Holding Co's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Regal Holding Co's Shiller PE Ratio falls into.


TPE:4807
76GF Score
Regal Holding Co Ltd TPE:4807
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Regal Holding Co 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, Regal Holding Co'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)
=0.307/324.0540*324.0540
=0.307

Current CPI (Dec. 2025) = 324.0540.

Regal Holding Co Quarterly Data

per share eps CPI Adj_EPS
201603 1.739 238.132 2.366
201606 2.065 241.018 2.776
201609 0.442 241.428 0.593
201612 1.210 241.432 1.624
201703 1.018 243.801 1.353
201706 0.548 244.955 0.725
201709 1.095 246.819 1.438
201712 0.692 246.524 0.910
201803 1.047 249.554 1.360
201806 1.364 251.989 1.754
201809 2.219 252.439 2.849
201812 0.557 251.233 0.718
201903 -1.191 254.202 -1.518
201906 -2.075 256.143 -2.625
201909 -1.230 256.759 -1.552
201912 0.817 256.974 1.030
202003 1.287 258.115 1.616
202006 -0.202 257.797 -0.254
202009 0.817 260.280 1.017
202012 0.298 260.474 0.371
202103 0.307 264.877 0.376
202106 0.528 271.696 0.630
202109 0.989 274.310 1.168
202112 0.903 278.802 1.050
202203 -0.115 287.504 -0.130
202206 -0.269 296.311 -0.294
202209 1.345 296.808 1.468
202212 -0.346 296.797 -0.378
202303 -2.008 301.836 -2.156
202306 -1.460 305.109 -1.551
202309 -0.519 307.789 -0.546
202312 0.019 306.746 0.020
202403 -0.692 312.332 -0.718
202406 -0.634 314.175 -0.654
202409 -0.740 315.301 -0.761
202412 0.576 315.605 0.591
202503 -0.240 319.799 -0.243
202506 -0.845 322.561 -0.849
202509 0.548 324.800 0.547
202512 0.307 324.054 0.307

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$1.44 mean?
Regal Holding Co (TPE:4807) has a E10 of NT$1.44 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Regal Holding Co and its competitors.
Is Regal Holding Co's E10 too high?
Regal Holding Co's current E10 is NT$1.44. Overall, Regal Holding Co has a GF Score™ of 76/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Regal Holding Co's E10 compare to TPR and SIG?
Regal Holding Co's E10 of NT$1.44 can be compared against companies in the Retail - Cyclical 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 Retail - Cyclical company?
A good E10 depends on the Retail - Cyclical 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 Regal Holding Co and its competitors. Regal Holding Co's current E10 is NT$1.44. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Regal Holding Co stock overvalued right now?
Based on GuruFocus' analysis, Regal Holding Co (TPE:4807) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$27.49, compared to a current price of NT$39.70 — trading 44.4% above its estimated fair value. The current E10 is NT$1.44. Regal Holding Co's overall GF Score™ is 76/100 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 Regal Holding Co (TPE:4807), the current E10 is NT$1.44 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 Regal Holding Co (TPE:4807) Overvalued in 2026?

Based on GuruFocus' analysis, Regal Holding Co stock appears to be overvalued. The current stock price of NT$39.70 is trading 44.4% above its estimated GF Value™ of NT$27.49. GuruFocus considers Regal Holding Co to be Significantly Overvalued.

Key valuation signals for TPE:4807:

  • E10: NT$1.44
  • GF Value™: NT$27.49 vs. price of NT$39.70 (44.4% above fair value)
  • GF Score™: 76/100 with 3 warning signs

No single metric tells the full story. See the TPE:4807 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Regal Holding Co Business Description

Address 802 West Bay Road, P.O. Box 32052, The Grand Pavilion Commercial Centre, Oleander Way, Grand Cayman, CYM, KY1-1208
Regal Holding Co Ltd operates in the jewelry and accessories industry. It is engaged in the designing, manufacturing, electroplating and selling jewelry gemstones. Geographically, the group has a business presence in the United States, Thailand, the United Kingdom, France, Canada, and other countries, of which key revenue is generated from Thailand. It operates in two segments: the jewelry manufacturing and sales segment and the electroplating segment. out of which the Manufacturing and selling gems and jewelry department accounts for the majority of revenue.
76GF Score

Get the complete analysis for TPE:4807

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

NT$39.70
Price
NT$27.49
GF Value