Single Well Industrial Co (ROCO:3490) E10: NT$0.73 (As of Dec. 2025)


ROCO:3490 Single Well Industrial Co Ltd ROCO:3490
46 GF Score
Price NT$33.45
GF Value NT$18.67
Valuation Significantly Overvalued
! 8 Warning Signs
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What is Single Well Industrial Co E10?

Single Well Industrial Co ROCO:3490 -1.33% 46 E10 is NT$0.73 as of Dec. 2025. GuruFocus rates ROCO:3490 with a GF Score™ of 46/100 and a GF Value™ of NT$18.67 (Significantly Overvalued). The stock has 8 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.

Single Well Industrial Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-0.380. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$0.73 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Single Well Industrial Co's average E10 Growth Rate was -52.90% per year. During the past 3 years, the average E10 Growth Rate was -31.30% per year. During the past 5 years, the average E10 Growth Rate was -13.00% 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 Single Well Industrial Co was 8.80% per year. The lowest was -31.30% per year. And the median was -2.45% per year.

As of today (2026-07-02), Single Well Industrial Co's current stock price is NT$33.45. Single Well Industrial Co's E10 for the quarter that ended in Dec. 2025 was NT$0.73. Single Well Industrial Co's Shiller PE Ratio of today is 45.82.

During the past 13 years, the highest Shiller PE Ratio of Single Well Industrial Co was 59.59. The lowest was 6.39. And the median was 14.24.


Single Well Industrial Co  (ROCO:3490) 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.

Single Well Industrial Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=33.45/0.73
=45.82

* 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 Single Well Industrial Co was 59.59. The lowest was 6.39. And the median was 14.24.


Be Aware

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


Single Well Industrial Co E10 Related Terms


Single Well Industrial Co E10 Historical Data

* Premium members only.

The historical data trend for Single Well Industrial 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.

Single Well Industrial Co E10 Chart

Single Well Industrial 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 1.85 2.25 2.24 1.55 0.73

Single Well Industrial 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 1.55 1.26 0.96 0.85 0.73

ROCO:3490 vs AMAT, LRCX, KLAC: E10 Comparison

For the Semiconductor Equipment & Materials subindustry, Single Well Industrial 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.


Single Well Industrial Co Shiller PE Ratio vs Semiconductors Industry

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

* The bar in red indicates where Single Well Industrial Co's Shiller PE Ratio falls into.


ROCO:3490
46GF Score
Single Well Industrial Co Ltd ROCO:3490
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Single Well Industrial 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, Single Well Industrial 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)
=-0.38/324.0540*324.0540
=-0.380

Current CPI (Dec. 2025) = 324.0540.

Single Well Industrial Co Quarterly Data

per share eps CPI Adj_EPS
201603 1.691 238.132 2.301
201606 -0.347 241.018 -0.467
201609 -0.423 241.428 -0.568
201612 -0.477 241.432 -0.640
201703 -0.700 243.801 -0.930
201706 0.211 244.955 0.279
201709 0.244 246.819 0.320
201712 -0.300 246.524 -0.394
201803 -0.122 249.554 -0.158
201806 0.233 251.989 0.300
201809 -0.360 252.439 -0.462
201812 -0.503 251.233 -0.649
201903 0.240 254.202 0.306
201906 -0.160 256.143 -0.202
201909 -0.340 256.759 -0.429
201912 -0.170 256.974 -0.214
202003 -0.160 258.115 -0.201
202006 0.370 257.797 0.465
202009 0.300 260.280 0.374
202012 0.480 260.474 0.597
202103 0.200 264.877 0.245
202106 0.490 271.696 0.584
202109 0.800 274.310 0.945
202112 0.698 278.802 0.811
202203 0.760 287.504 0.857
202206 0.230 296.311 0.252
202209 0.460 296.808 0.502
202212 0.670 296.797 0.732
202303 0.150 301.836 0.161
202306 0.070 305.109 0.074
202309 0.290 307.789 0.305
202312 0.430 306.746 0.454
202403 1.920 312.332 1.992
202406 0.170 314.175 0.175
202409 0.060 315.301 0.062
202412 -0.490 315.605 -0.503
202503 -0.550 319.799 -0.557
202506 0.430 322.561 0.432
202509 0.550 324.800 0.549
202512 -0.380 324.054 -0.380

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$0.73 mean?
Single Well Industrial Co (ROCO:3490) has a E10 of NT$0.73 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Single Well Industrial Co and its competitors.
Is Single Well Industrial Co's E10 too high?
Single Well Industrial Co's current E10 is NT$0.73. Overall, Single Well Industrial Co has a GF Score™ of 46/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Single Well Industrial Co's E10 compare to AMAT and LRCX?
Single Well Industrial Co's E10 of NT$0.73 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 Single Well Industrial Co and its competitors. Single Well Industrial Co's current E10 is NT$0.73. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Single Well Industrial Co stock overvalued right now?
Based on GuruFocus' analysis, Single Well Industrial Co (ROCO:3490) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$18.67, compared to a current price of NT$33.45 — trading 79.2% above its estimated fair value. The current E10 is NT$0.73. Single Well Industrial Co's overall GF Score™ is 46/100 with 8 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 Single Well Industrial Co (ROCO:3490), the current E10 is NT$0.73 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 Single Well Industrial Co (ROCO:3490) Overvalued in 2026?

Based on GuruFocus' analysis, Single Well Industrial Co stock appears to be overvalued. The current stock price of NT$33.45 is trading 79.2% above its estimated GF Value™ of NT$18.67. GuruFocus considers Single Well Industrial Co to be Significantly Overvalued.

Key valuation signals for ROCO:3490:

  • E10: NT$0.73
  • GF Value™: NT$18.67 vs. price of NT$33.45 (79.2% above fair value)
  • GF Score™: 46/100 with 8 warning signs

No single metric tells the full story. See the ROCO:3490 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Single Well Industrial Co Business Description

Address No. 77, Zhongshan Road, Tucheng District, New Taipei, TWN
Single Well Industrial Co Ltd is a manufacturer of LED and IC packaging molds and automation equipment in Taiwan. The company's products mainly include molds and automation equipment. The mold aspect includes molds for LED, semiconductor, diode, and other packaging, while the equipment aspect provides the equipment required for the post-packaging process.
46GF Score

Get the complete analysis for ROCO:3490

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

NT$33.45
Price
NT$18.67
GF Value