Sung Gang (ROCO:6240) E10: NT$0.04 (As of Dec. 2025)

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Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

ROCO:6240 Sung Gang Corp Ltd ROCO:6240
69 GF Score
Price NT$18.05
GF Value NT$26.13
Valuation Possible Value Trap
! 3 Warning Signs
View Full Analysis

What is Sung Gang E10?

Sung Gang ROCO:6240 -2.70% 69 E10 is NT$0.04 as of Dec. 2025. GuruFocus rates ROCO:6240 with a GF Score™ of 69/100 and a GF Value™ of NT$26.13 (Possible Value Trap). 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.

Sung Gang's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.280. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$0.04 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Sung Gang's average E10 Growth Rate was -89.20% per year. During the past 3 years, the average E10 Growth Rate was -67.20% 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.

During the past 13 years, the highest 3-Year average E10 Growth Rate of Sung Gang was -26.70% per year. The lowest was -67.20% per year. And the median was -46.95% per year.

As of today (2026-07-21), Sung Gang's current stock price is NT$18.05. Sung Gang's E10 for the quarter that ended in Dec. 2025 was NT$0.04. Sung Gang's Shiller PE Ratio of today is 451.25.

During the past 13 years, the highest Shiller PE Ratio of Sung Gang was 485.00. The lowest was 15.71. And the median was 40.88.


Sung Gang  (ROCO:6240) 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.

Sung Gang's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=18.05/0.04
=451.25

* 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 Sung Gang was 485.00. The lowest was 15.71. And the median was 40.88.


Be Aware

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


Sung Gang E10 Related Terms


Sung Gang E10 Historical Data

* Premium members only.

The historical data trend for Sung Gang'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.

Sung Gang E10 Chart

Sung Gang 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 0.94 1.13 0.43 0.37 0.04

Sung Gang 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 0.37 0.23 0.17 -0.05 0.04

ROCO:6240 vs NYT, WLY: E10 Comparison

For the Publishing subindustry, Sung Gang'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.


Sung Gang Shiller PE Ratio vs Media - Diversified Industry

For the Media - Diversified industry and Communication Services sector, Sung Gang's Shiller PE Ratio distribution charts can be found below:

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


ROCO:6240
69GF Score
Sung Gang Corp Ltd ROCO:6240
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Sung Gang 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, Sung Gang'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)
=0.28/324.0540*324.0540
=0.280

Current CPI (Dec. 2025) = 324.0540.

Sung Gang Quarterly Data

per share eps CPI Adj_EPS
201603 -0.580 238.132 -0.789
201606 0.070 241.018 0.094
201609 1.280 241.428 1.718
201612 0.060 241.432 0.081
201703 -0.140 243.801 -0.186
201706 -0.040 244.955 -0.053
201709 -0.190 246.819 -0.249
201712 -1.220 246.524 -1.604
201803 -0.610 249.554 -0.792
201806 -0.270 251.989 -0.347
201809 1.140 252.439 1.463
201812 1.030 251.233 1.329
201903 -0.120 254.202 -0.153
201906 0.290 256.143 0.367
201909 -0.410 256.759 -0.517
201912 -1.890 256.974 -2.383
202003 -1.100 258.115 -1.381
202006 0.520 257.797 0.654
202009 0.140 260.280 0.174
202012 0.490 260.474 0.610
202103 0.245 264.877 0.300
202106 0.780 271.696 0.930
202109 0.060 274.310 0.071
202112 0.050 278.802 0.058
202203 -0.100 287.504 -0.113
202206 2.160 296.311 2.362
202209 -0.500 296.808 -0.546
202212 0.570 296.797 0.622
202303 0.060 301.836 0.064
202306 -0.670 305.109 -0.712
202309 -0.100 307.789 -0.105
202312 0.270 306.746 0.285
202403 -0.280 312.332 -0.291
202406 1.850 314.175 1.908
202409 -0.940 315.301 -0.966
202412 -0.290 315.605 -0.298
202503 -0.350 319.799 -0.355
202506 -0.670 322.561 -0.673
202509 -0.410 324.800 -0.409
202512 0.280 324.054 0.280

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$0.04 mean?
Sung Gang (ROCO:6240) has a E10 of NT$0.04 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Sung Gang and its competitors.
Is Sung Gang's E10 too high?
Sung Gang's current E10 is NT$0.04. Overall, Sung Gang has a GF Score™ of 69/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Sung Gang's E10 compare to NYT and WLY?
Sung Gang's E10 of NT$0.04 can be compared against companies in the Media - Diversified 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 Media - Diversified company?
A good E10 depends on the Media - Diversified 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 Sung Gang and its competitors. Sung Gang's current E10 is NT$0.04. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sung Gang stock overvalued right now?
Based on GuruFocus' analysis, Sung Gang (ROCO:6240) is currently considered Possible Value Trap. The stock's GF Value™ is NT$26.13, compared to a current price of NT$18.05 — trading 30.9% below its estimated fair value. The current E10 is NT$0.04. Sung Gang's overall GF Score™ is 69/100 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 Sung Gang (ROCO:6240), the current E10 is NT$0.04 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 Sung Gang (ROCO:6240) Overvalued in 2026?

Based on GuruFocus' analysis, Sung Gang stock appears to be undervalued. The current stock price of NT$18.05 is trading 30.9% below its estimated GF Value™ of NT$26.13. GuruFocus considers Sung Gang to be Possible Value Trap.

Key valuation signals for ROCO:6240:

  • E10: NT$0.04
  • GF Value™: NT$26.13 vs. price of NT$18.05 (30.9% below fair value)
  • GF Score™: 69/100 with 3 warning signs

No single metric tells the full story. See the ROCO:6240 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sung Gang Business Description

Address No. 50, Zhongxiao West Road, 100, 9th Floor, Section 1, Zhongzheng District, Taipei, TWN
Sung Gang Corp Ltd publishes computer related books. The company is also involved in the wholesale of information software and leasing industry. Its products portfolio include Information technology books, Commercial software, Application software, and Computer skill test.
69GF Score

Get the complete analysis for ROCO:6240

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

NT$18.05
Price
NT$26.13
GF Value