Prolific Technology (ROCO:6233) E10: NT$0.04 (As of Jun. 2026)

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ROCO:6233 Prolific Technology Inc ROCO:6233
68 GF Score
Price NT$21.25
GF Value NT$24.92
Valuation Modestly Undervalued
! 2 Warning Signs
View Full Analysis

What is Prolific Technology E10?

Prolific Technology ROCO:6233 +0.24% 68 E10 is NT$0.04 as of Jun. 2026. GuruFocus rates ROCO:6233 with a GF Score™ of 68/100 and a GF Value™ of NT$24.92 (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.

Prolific Technology's adjusted earnings per share data for the three months ended in Jun. 2026 was NT$0.260. 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 Jun. 2026.

During the past 3 years, the average E10 Growth Rate was 52.30% per year. During the past 5 years, the average E10 Growth Rate was 40.50% 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 Prolific Technology was 52.30% per year. The lowest was 14.70% per year. And the median was 30.95% per year.

As of today (2026-08-21), Prolific Technology's current stock price is NT$21.25. Prolific Technology's E10 for the quarter that ended in Jun. 2026 was NT$0.04. Prolific Technology's Shiller PE Ratio of today is 531.25.

During the past 13 years, the highest Shiller PE Ratio of Prolific Technology was 643.75. The lowest was 496.25. And the median was 545.00.


Prolific Technology  (ROCO:6233) 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.

Prolific Technology's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=21.25/0.04
=531.25

* 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 Prolific Technology was 643.75. The lowest was 496.25. And the median was 545.00.


Be Aware

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


Prolific Technology E10 Related Terms


Prolific Technology E10 Historical Data

* Premium members only.

The historical data trend for Prolific Technology'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.

Prolific Technology E10 Chart

Prolific Technology 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 -0.64 -0.46 -0.33 -0.15 -0.05

Prolific Technology Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 -0.09 -0.09 -0.05 -0.01 0.04

ROCO:6233 vs NVDA, AVGO, MU: E10 Comparison

For the Semiconductors subindustry, Prolific Technology'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.


Prolific Technology Shiller PE Ratio vs Semiconductors Industry

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

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


ROCO:6233
68GF Score
Prolific Technology Inc ROCO:6233
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Prolific Technology 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, Prolific Technology's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.26/333.9520*333.9520
=0.260

Current CPI (Jun. 2026) = 333.9520.

Prolific Technology Quarterly Data

per share eps CPI Adj_EPS
201609 -0.220 241.428 -0.304
201612 0.010 241.432 0.014
201703 -0.430 243.801 -0.589
201706 -0.080 244.955 -0.109
201709 -0.100 246.819 -0.135
201712 -0.110 246.524 -0.149
201803 -0.200 249.554 -0.268
201806 0.010 251.989 0.013
201809 -0.060 252.439 -0.079
201812 -0.100 251.233 -0.133
201903 -0.060 254.202 -0.079
201906 0.080 256.143 0.104
201909 0.040 256.759 0.052
201912 -0.023 256.974 -0.030
202003 -0.060 258.115 -0.078
202006 0.070 257.797 0.091
202009 0.050 260.280 0.064
202012 0.050 260.474 0.064
202103 0.200 264.877 0.252
202106 0.120 271.696 0.147
202109 0.270 274.310 0.329
202112 0.160 278.802 0.192
202203 0.170 287.504 0.197
202206 0.150 296.311 0.169
202209 0.210 296.808 0.236
202212 -0.030 296.797 -0.034
202303 -0.070 301.836 -0.077
202306 0.010 305.109 0.011
202309 0.140 307.789 0.152
202312 -0.040 306.746 -0.044
202403 -0.040 312.332 -0.043
202406 0.120 314.175 0.128
202409 0.270 315.301 0.286
202412 0.010 315.605 0.011
202503 -0.060 319.799 -0.063
202506 -0.090 322.561 -0.093
202509 0.070 324.800 0.072
202512 -0.080 324.054 -0.082
202603 -0.030 330.213 -0.030
202606 0.260 333.952 0.260

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?
Prolific Technology (ROCO:6233) has a E10 of NT$0.04 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Prolific Technology and its competitors.
Is Prolific Technology's E10 too high?
Prolific Technology's current E10 is NT$0.04. Overall, Prolific Technology has a GF Score™ of 68/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Prolific Technology's E10 compare to NVDA and AVGO?
Prolific Technology's E10 of NT$0.04 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 Prolific Technology and its competitors. Prolific Technology'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 Prolific Technology stock overvalued right now?
Based on GuruFocus' analysis, Prolific Technology (ROCO:6233) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$24.92, compared to a current price of NT$21.25 — trading 14.7% below its estimated fair value. The current E10 is NT$0.04. Prolific Technology's overall GF Score™ is 68/100 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 Prolific Technology (ROCO:6233), the current E10 is NT$0.04 as of Jun. 2026. 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 Prolific Technology (ROCO:6233) Overvalued in 2026?

Based on GuruFocus' analysis, Prolific Technology stock appears to be undervalued. The current stock price of NT$21.25 is trading 14.7% below its estimated GF Value™ of NT$24.92. GuruFocus considers Prolific Technology to be Modestly Undervalued.

Key valuation signals for ROCO:6233:

  • E10: NT$0.04
  • GF Value™: NT$24.92 vs. price of NT$21.25 (14.7% below fair value)
  • GF Score™: 68/100 with 2 warning signs

No single metric tells the full story. See the ROCO:6233 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Prolific Technology Business Description

Address No. 48, Section 3, Nangang Road, 7th floor, Nangang District, Taipei, TWN, 115
Prolific Technology Inc is engaged in research, development, design, and sales of IC (Integrated Circuit) products for data communication and connectivity applications in Taiwan. It is a provider of USB Smart I/O, Intelligent Green Energy Saving, and Mixed-Mode Hall Sensor solutions. The company is a pioneer in providing IC and SOC solutions for USB Serial/Parallel converters, USB Storage products, Brushless Motor drivers, Hall sensors, Power Meters, and MEMS Motion Sensing products.
68GF Score

Get the complete analysis for ROCO:6233

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

NT$21.25
Price
NT$24.92
GF Value