Phihong Technology Co (TPE:2457) E10: NT$-0.42 (As of Dec. 2025)


TPE:2457 Phihong Technology Co Ltd TPE:2457
65 GF Score
Price NT$27.60
GF Value NT$31.52
Valuation Modestly Undervalued
! 2 Warning Signs
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What is Phihong Technology Co E10?

Phihong Technology Co TPE:2457 +2.22% 65 E10 is NT$-0.42 as of Dec. 2025. GuruFocus rates TPE:2457 with a GF Score™ of 65/100 and a GF Value™ of NT$31.52 (Modestly Undervalued). The stock has 2 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.

Phihong Technology Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-0.515. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$-0.42 for the trailing ten years ended in Dec. 2025.

During the past 3 years, the average E10 Growth Rate was 3.00% 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 Phihong Technology Co was 3.00% per year. The lowest was -16.00% per year. And the median was -6.50% per year.

As of today (2026-06-30), Phihong Technology Co's current stock price is NT$27.60. Phihong Technology Co's E10 for the quarter that ended in Dec. 2025 was NT$-0.42. Phihong Technology Co's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of Phihong Technology Co was 382.02. The lowest was 5.58. And the median was 14.57.


Phihong Technology Co  (TPE:2457) 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 Phihong Technology Co was 382.02. The lowest was 5.58. And the median was 14.57.


Be Aware

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


Phihong Technology Co E10 Related Terms


Phihong Technology Co E10 Historical Data

* Premium members only.

The historical data trend for Phihong Technology 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.

Phihong Technology Co E10 Chart

Phihong Technology 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 -0.32 -0.46 -0.48 -0.50 -0.42

Phihong Technology 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 -0.50 -0.48 -0.44 -0.40 -0.42

TPE:2457 vs VRT, BE: E10 Comparison

For the Electrical Equipment & Parts subindustry, Phihong Technology 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.


Phihong Technology Co Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Phihong Technology Co's Shiller PE Ratio distribution charts can be found below:

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


TPE:2457
65GF Score
Phihong Technology Co Ltd TPE:2457
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Phihong Technology 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, Phihong Technology 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)
=-0.515/324.0540*324.0540
=-0.515

Current CPI (Dec. 2025) = 324.0540.

Phihong Technology Co Quarterly Data

per share eps CPI Adj_EPS
201603 -0.704 238.132 -0.958
201606 -0.656 241.018 -0.882
201609 -0.205 241.428 -0.275
201612 0.494 241.432 0.663
201703 0.088 243.801 0.117
201706 0.020 244.955 0.026
201709 0.225 246.819 0.295
201712 -0.323 246.524 -0.425
201803 -0.577 249.554 -0.749
201806 -0.205 251.989 -0.264
201809 0.049 252.439 0.063
201812 0.020 251.233 0.026
201903 -0.245 254.202 -0.312
201906 -0.029 256.143 -0.037
201909 0.166 256.759 0.210
201912 -0.005 256.974 -0.006
202003 -0.470 258.115 -0.590
202006 -0.098 257.797 -0.123
202009 0.059 260.280 0.073
202012 0.059 260.474 0.073
202103 -0.499 264.877 -0.610
202106 -0.323 271.696 -0.385
202109 -0.049 274.310 -0.058
202112 -0.039 278.802 -0.045
202203 -0.205 287.504 -0.231
202206 0.186 296.311 0.203
202209 0.060 296.808 0.066
202212 0.150 296.797 0.164
202303 0.120 301.836 0.129
202306 0.310 305.109 0.329
202309 0.270 307.789 0.284
202312 -0.020 306.746 -0.021
202403 0.160 312.332 0.166
202406 0.100 314.175 0.103
202409 0.240 315.301 0.247
202412 -0.020 315.605 -0.021
202503 -0.330 319.799 -0.334
202506 -0.770 322.561 -0.774
202509 0.130 324.800 0.130
202512 -0.515 324.054 -0.515

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$-0.42 mean?
Phihong Technology Co (TPE:2457) has a E10 of NT$-0.42 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Phihong Technology Co and its competitors.
Is Phihong Technology Co's E10 too high?
Phihong Technology Co's current E10 is NT$-0.42. Overall, Phihong Technology Co has a GF Score™ of 65/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Phihong Technology Co's E10 compare to VRT and BE?
Phihong Technology Co's E10 of NT$-0.42 can be compared against companies in the Industrial Products 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 an Industrial Products company?
A good E10 depends on the Industrial Products 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 Phihong Technology Co and its competitors. Phihong Technology Co's current E10 is NT$-0.42. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Phihong Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Phihong Technology Co (TPE:2457) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$31.52, compared to a current price of NT$27.60 — trading 12.4% below its estimated fair value. The current E10 is NT$-0.42. Phihong Technology Co's overall GF Score™ is 65/100 with 2 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 Phihong Technology Co (TPE:2457), the current E10 is NT$-0.42 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 Phihong Technology Co (TPE:2457) Overvalued in 2026?

Based on GuruFocus' analysis, Phihong Technology Co stock appears to be undervalued. The current stock price of NT$27.60 is trading 12.4% below its estimated GF Value™ of NT$31.52. GuruFocus considers Phihong Technology Co to be Modestly Undervalued.

Key valuation signals for TPE:2457:

  • E10: NT$-0.42
  • GF Value™: NT$31.52 vs. price of NT$27.60 (12.4% below fair value)
  • GF Score™: 65/100 with 2 warning signs

No single metric tells the full story. See the TPE:2457 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Phihong Technology Co Business Description

Address No. 568, Fuxing 3rd Road, Guishan District, Taoyuan, TWN, 333611
Phihong Technology Co Ltd predominantly manufactures and sells alternating current (AC)/direct current (DC) power adapters, charger bases, power supply modules, UPS (uninterruptible power supply) for computers, and ballasts. Its products also include multi-industry areas such as households, POS machines, small household appliances, household-level medical equipment, e-bike electric bicycles, construction, industry, and electric vehicles. Its operating segments include Power supply products, which derive key revenue, and EV energy products. Geographically, the company generates a majority of its revenue from Asia, followed by the Americas, Europe, and other regions.
65GF Score

Get the complete analysis for TPE:2457

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

NT$27.60
Price
NT$31.52
GF Value