Aurona Industries (ROCO:8074) E10: NT$1.66 (As of Dec. 2025)

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ROCO:8074 Aurona Industries Inc ROCO:8074
49 GF Score
Price NT$61.50
GF Value NT$23.01
Valuation Significantly Overvalued
! 5 Warning Signs
View Full Analysis

What is Aurona Industries E10?

Aurona Industries ROCO:8074 +1.49% 49 E10 is NT$1.66 as of Dec. 2025. GuruFocus rates ROCO:8074 with a GF Score™ of 49/100 and a GF Value™ of NT$23.01 (Significantly Overvalued). The stock has 5 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.

Aurona Industries's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$0.530. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$1.66 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Aurona Industries's average E10 Growth Rate was -5.70% per year. During the past 3 years, the average E10 Growth Rate was -5.10% per year. During the past 5 years, the average E10 Growth Rate was 0.70% 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 Aurona Industries was 6.00% per year. The lowest was -5.10% per year. And the median was 3.00% per year.

As of today (2026-07-16), Aurona Industries's current stock price is NT$61.50. Aurona Industries's E10 for the quarter that ended in Dec. 2025 was NT$1.66. Aurona Industries's Shiller PE Ratio of today is 37.05.

During the past 13 years, the highest Shiller PE Ratio of Aurona Industries was 49.46. The lowest was 8.19. And the median was 11.56.


Aurona Industries  (ROCO:8074) 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.

Aurona Industries's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=61.50/1.66
=37.05

* 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 Aurona Industries was 49.46. The lowest was 8.19. And the median was 11.56.


Be Aware

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


Aurona Industries E10 Related Terms


Aurona Industries E10 Historical Data

* Premium members only.

The historical data trend for Aurona Industries'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.

Aurona Industries E10 Chart

Aurona Industries 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 1.68 1.94 1.83 1.76 1.66

Aurona Industries 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 1.76 1.75 1.70 1.68 1.66

ROCO:8074 vs APH, GLW: E10 Comparison

For the Electronic Components subindustry, Aurona Industries'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.


Aurona Industries Shiller PE Ratio vs Hardware Industry

For the Hardware industry and Technology sector, Aurona Industries's Shiller PE Ratio distribution charts can be found below:

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


ROCO:8074
49GF Score
Aurona Industries Inc ROCO:8074
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Aurona Industries 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, Aurona Industries'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)
=0.53/324.0540*324.0540
=0.530

Current CPI (Dec. 2025) = 324.0540.

Aurona Industries Quarterly Data

per share eps CPI Adj_EPS
201603 0.420 238.132 0.572
201606 0.480 241.018 0.645
201609 0.430 241.428 0.577
201612 0.570 241.432 0.765
201703 0.240 243.801 0.319
201706 0.440 244.955 0.582
201709 0.580 246.819 0.761
201712 0.490 246.524 0.644
201803 0.310 249.554 0.403
201806 0.470 251.989 0.604
201809 0.300 252.439 0.385
201812 0.180 251.233 0.232
201903 0.100 254.202 0.127
201906 0.070 256.143 0.089
201909 0.190 256.759 0.240
201912 0.250 256.974 0.315
202003 0.150 258.115 0.188
202006 0.130 257.797 0.163
202009 0.310 260.280 0.386
202012 0.310 260.474 0.386
202103 0.330 264.877 0.404
202106 0.190 271.696 0.227
202109 0.280 274.310 0.331
202112 0.140 278.802 0.163
202203 0.210 287.504 0.237
202206 0.110 296.311 0.120
202209 0.460 296.808 0.502
202212 2.700 296.797 2.948
202303 0.100 301.836 0.107
202306 0.170 305.109 0.181
202309 0.400 307.789 0.421
202312 0.020 306.746 0.021
202403 0.340 312.332 0.353
202406 0.260 314.175 0.268
202409 0.300 315.301 0.308
202412 0.260 315.605 0.267
202503 0.240 319.799 0.243
202506 0.100 322.561 0.100
202509 0.470 324.800 0.469
202512 0.530 324.054 0.530

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$1.66 mean?
Aurona Industries (ROCO:8074) has a E10 of NT$1.66 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Aurona Industries and its competitors.
Is Aurona Industries' E10 too high?
Aurona Industries' current E10 is NT$1.66. Overall, Aurona Industries has a GF Score™ of 49/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Aurona Industries' E10 compare to APH and GLW?
Aurona Industries' E10 of NT$1.66 can be compared against companies in the Hardware 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 Hardware company?
A good E10 depends on the Hardware 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 Aurona Industries and its competitors. Aurona Industries's current E10 is NT$1.66. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aurona Industries stock overvalued right now?
Based on GuruFocus' analysis, Aurona Industries (ROCO:8074) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$23.01, compared to a current price of NT$61.50 — trading 167.3% above its estimated fair value. The current E10 is NT$1.66. Aurona Industries' overall GF Score™ is 49/100 with 5 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 Aurona Industries (ROCO:8074), the current E10 is NT$1.66 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 Aurona Industries (ROCO:8074) Overvalued in 2026?

Based on GuruFocus' analysis, Aurona Industries stock appears to be overvalued. The current stock price of NT$61.50 is trading 167.3% above its estimated GF Value™ of NT$23.01. GuruFocus considers Aurona Industries to be Significantly Overvalued.

Key valuation signals for ROCO:8074:

  • E10: NT$1.66
  • GF Value™: NT$23.01 vs. price of NT$61.50 (167.3% above fair value)
  • GF Score™: 49/100 with 5 warning signs

No single metric tells the full story. See the ROCO:8074 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Aurona Industries Business Description

Address No 12-27 Lai Guan Liau, Chia Lie Cheng Dist, Tainan Hsien, TWN
Aurona Industries Inc manufactures, processes, and trades in Bakelite, printed circuit boards, insulation materials, and Laminate hard plastic sheets. It supplies the products to high-end PCB and IC Carrier fabricators, and the PCB application includes smartphones, Flash Memory Chip, PBGA and Flip Chip drilling, among others.
49GF Score

Get the complete analysis for ROCO:8074

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

NT$61.50
Price
NT$23.01
GF Value