Spirox (TPE:3055) E10: NT$-0.50 (As of Dec. 2025)


TPE:3055 Spirox Corp TPE:3055
55 GF Score
Price NT$96.00
GF Value NT$28.95
Valuation Significantly Overvalued
! 4 Warning Signs
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What is Spirox E10?

Spirox TPE:3055 -5.88% 55 E10 is NT$-0.50 as of Dec. 2025. GuruFocus rates TPE:3055 with a GF Score™ of 55/100 and a GF Value™ of NT$28.95 (Significantly Overvalued). The stock has 4 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.

Spirox's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-0.950. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$-0.50 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Spirox's average E10 Growth Rate was -222.00% 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.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Spirox was 21.30% per year. The lowest was -30.50% per year. And the median was 13.10% per year.

As of today (2026-06-28), Spirox's current stock price is NT$96.00. Spirox's E10 for the quarter that ended in Dec. 2025 was NT$-0.50. Spirox's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Spirox was 550.00. The lowest was 22.86. And the median was 103.25.


Spirox  (TPE:3055) 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.

During the past 13 years, the highest Shiller P/E Ratio of Spirox was 550.00. The lowest was 22.86. And the median was 103.25.


Be Aware

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


Spirox E10 Related Terms


Spirox E10 Historical Data

* Premium members only.

The historical data trend for Spirox'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.

Spirox E10 Chart

Spirox 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 0.23 0.37 0.97 0.41 -0.50

Spirox 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 0.41 0.31 0.18 0.15 -0.50

TPE:3055 vs LRCX, AMAT, KLAC: E10 Comparison

For the Semiconductor Equipment & Materials subindustry, Spirox'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.


Spirox Shiller PE Ratio vs Semiconductors Industry

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

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


TPE:3055
55GF Score
Spirox Corp TPE:3055
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Spirox 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, Spirox'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)
=-0.95/324.0540*324.0540
=-0.950

Current CPI (Dec. 2025) = 324.0540.

Spirox Quarterly Data

per share eps CPI Adj_EPS
201603 0.350 238.132 0.476
201606 0.280 241.018 0.376
201609 0.100 241.428 0.134
201612 0.390 241.432 0.523
201703 0.010 243.801 0.013
201706 0.170 244.955 0.225
201709 0.090 246.819 0.118
201712 0.120 246.524 0.158
201803 0.230 249.554 0.299
201806 0.320 251.989 0.412
201809 -0.030 252.439 -0.039
201812 0.320 251.233 0.413
201903 0.280 254.202 0.357
201906 0.110 256.143 0.139
201909 -0.670 256.759 -0.846
201912 0.370 256.974 0.467
202003 -0.420 258.115 -0.527
202006 0.130 257.797 0.163
202009 0.320 260.280 0.398
202012 -0.510 260.474 -0.634
202103 -1.060 264.877 -1.297
202106 -0.910 271.696 -1.085
202109 -1.310 274.310 -1.548
202112 -0.410 278.802 -0.477
202203 -0.820 287.504 -0.924
202206 -0.680 296.311 -0.744
202209 1.020 296.808 1.114
202212 2.600 296.797 2.839
202303 0.910 301.836 0.977
202306 -0.430 305.109 -0.457
202309 -1.030 307.789 -1.084
202312 0.060 306.746 0.063
202403 -0.900 312.332 -0.934
202406 -0.090 314.175 -0.093
202409 -0.430 315.301 -0.442
202412 -0.780 315.605 -0.801
202503 -0.660 319.799 -0.669
202506 -0.920 322.561 -0.924
202509 -0.150 324.800 -0.150
202512 -0.950 324.054 -0.950

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$-0.50 mean?
Spirox (TPE:3055) has a E10 of NT$-0.50 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Spirox and its competitors.
Is Spirox's E10 too high?
Spirox's current E10 is NT$-0.50. Overall, Spirox has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Spirox's E10 compare to LRCX and AMAT?
Spirox's E10 of NT$-0.50 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 Spirox and its competitors. Spirox's current E10 is NT$-0.50. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Spirox stock overvalued right now?
Based on GuruFocus' analysis, Spirox (TPE:3055) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$28.95, compared to a current price of NT$96.00 — trading 231.6% above its estimated fair value. The current E10 is NT$-0.50. Spirox's overall GF Score™ is 55/100 with 4 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 Spirox (TPE:3055), the current E10 is NT$-0.50 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 Spirox (TPE:3055) Overvalued in 2026?

Based on GuruFocus' analysis, Spirox stock appears to be overvalued. The current stock price of NT$96.00 is trading 231.6% above its estimated GF Value™ of NT$28.95. GuruFocus considers Spirox to be Significantly Overvalued.

Key valuation signals for TPE:3055:

  • E10: NT$-0.50
  • GF Value™: NT$28.95 vs. price of NT$96.00 (231.6% above fair value)
  • GF Score™: 55/100 with 4 warning signs

No single metric tells the full story. See the TPE:3055 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Spirox Business Description

Address No. 95, Shuiyuan Street, Hsinchu City, TWN, 30069
Spirox Corp is engaged in providing integrated solutions and services for the high-tech industry. The products offered by the company include test machines, classifiers, test stand and test interfaces, and failure analysis systems.
55GF Score

Get the complete analysis for TPE:3055

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

NT$96.00
Price
NT$28.95
GF Value