Giant Manufacturing Co (TPE:9921) E10: NT$10.49 (As of Dec. 2025)


TPE:9921 Giant Manufacturing Co Ltd TPE:9921
68 GF Score
Price NT$77.10
GF Value NT$131.24
Valuation Significantly Undervalued
! 6 Warning Signs
View Full Analysis

What is Giant Manufacturing Co E10?

Giant Manufacturing Co TPE:9921 +0.78% 68 E10 is NT$10.49 as of Dec. 2025. GuruFocus rates TPE:9921 with a GF Score™ of 68/100 and a GF Value™ of NT$131.24 (Significantly Undervalued). The stock has 6 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.

Giant Manufacturing Co's adjusted earnings per share data for the three months ended in Dec. 2025 was NT$-0.470. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is NT$10.49 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Giant Manufacturing Co's average E10 Growth Rate was -7.90% per year. During the past 3 years, the average E10 Growth Rate was -4.80% per year. During the past 5 years, the average E10 Growth Rate was 1.60% 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 Giant Manufacturing Co was 10.40% per year. The lowest was -4.80% per year. And the median was 7.30% per year.

As of today (2026-06-30), Giant Manufacturing Co's current stock price is NT$77.10. Giant Manufacturing Co's E10 for the quarter that ended in Dec. 2025 was NT$10.49. Giant Manufacturing Co's Shiller PE Ratio of today is 7.35.

During the past 13 years, the highest Shiller PE Ratio of Giant Manufacturing Co was 35.61. The lowest was 6.29. And the median was 18.59.


Giant Manufacturing Co  (TPE:9921) 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.

Giant Manufacturing Co's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=77.10/10.49
=7.35

* 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 Giant Manufacturing Co was 35.61. The lowest was 6.29. And the median was 18.59.


Be Aware

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


Giant Manufacturing Co E10 Related Terms


Giant Manufacturing Co E10 Historical Data

* Premium members only.

The historical data trend for Giant Manufacturing 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.

Giant Manufacturing Co E10 Chart

Giant Manufacturing 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 10.92 12.14 12.17 11.39 10.49

Giant Manufacturing 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 11.39 11.29 11.14 10.87 10.49

TPE:9921 vs AS, HAS, LTH: E10 Comparison

For the Leisure subindustry, Giant Manufacturing 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.


Giant Manufacturing Co Shiller PE Ratio vs Travel & Leisure Industry

For the Travel & Leisure industry and Consumer Cyclical sector, Giant Manufacturing Co's Shiller PE Ratio distribution charts can be found below:

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


TPE:9921
68GF Score
Giant Manufacturing Co Ltd TPE:9921
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Giant Manufacturing 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, Giant Manufacturing 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)
=-0.47/324.0540*324.0540
=-0.470

Current CPI (Dec. 2025) = 324.0540.

Giant Manufacturing Co Quarterly Data

per share eps CPI Adj_EPS
201603 2.252 238.132 3.065
201606 2.213 241.018 2.975
201609 1.875 241.428 2.517
201612 1.746 241.432 2.344
201703 1.359 243.801 1.806
201706 1.786 244.955 2.363
201709 1.895 246.819 2.488
201712 0.377 246.524 0.496
201803 0.685 249.554 0.889
201806 2.153 251.989 2.769
201809 2.590 252.439 3.325
201812 2.123 251.233 2.738
201903 1.806 254.202 2.302
201906 2.749 256.143 3.478
201909 2.709 256.759 3.419
201912 1.647 256.974 2.077
202003 1.657 258.115 2.080
202006 4.019 257.797 5.052
202009 3.919 260.280 4.879
202012 3.453 260.474 4.296
202103 4.475 264.877 5.475
202106 4.882 271.696 5.823
202109 3.374 274.310 3.986
202112 3.009 278.802 3.497
202203 4.830 287.504 5.444
202206 4.770 296.311 5.217
202209 5.180 296.808 5.656
202212 0.430 296.797 0.469
202303 2.070 301.836 2.222
202306 2.930 305.109 3.112
202309 2.740 307.789 2.885
202312 0.720 306.746 0.761
202403 1.300 312.332 1.349
202406 2.860 314.175 2.950
202409 1.250 315.301 1.285
202412 -2.320 315.605 -2.382
202503 0.930 319.799 0.942
202506 0.480 322.561 0.482
202509 0.890 324.800 0.888
202512 -0.470 324.054 -0.470

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$10.49 mean?
Giant Manufacturing Co (TPE:9921) has a E10 of NT$10.49 as of Dec. 2025. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on Giant Manufacturing Co and its competitors.
Is Giant Manufacturing Co's E10 too high?
Giant Manufacturing Co's current E10 is NT$10.49. Overall, Giant Manufacturing Co has a GF Score™ of 68/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Giant Manufacturing Co's E10 compare to AS and HAS?
Giant Manufacturing Co's E10 of NT$10.49 can be compared against companies in the Travel & Leisure 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 Travel & Leisure company?
A good E10 depends on the Travel & Leisure 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 Giant Manufacturing Co and its competitors. Giant Manufacturing Co's current E10 is NT$10.49. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Giant Manufacturing Co stock overvalued right now?
Based on GuruFocus' analysis, Giant Manufacturing Co (TPE:9921) is currently considered Significantly Undervalued. The stock's GF Value™ is NT$131.24, compared to a current price of NT$77.10 — trading 41.3% below its estimated fair value. The current E10 is NT$10.49. Giant Manufacturing Co's overall GF Score™ is 68/100 with 6 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 Giant Manufacturing Co (TPE:9921), the current E10 is NT$10.49 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 Giant Manufacturing Co (TPE:9921) Overvalued in 2026?

Based on GuruFocus' analysis, Giant Manufacturing Co stock appears to be undervalued. The current stock price of NT$77.10 is trading 41.3% below its estimated GF Value™ of NT$131.24. GuruFocus considers Giant Manufacturing Co to be Significantly Undervalued.

Key valuation signals for TPE:9921:

  • E10: NT$10.49
  • GF Value™: NT$131.24 vs. price of NT$77.10 (41.3% below fair value)
  • GF Score™: 68/100 with 6 warning signs

No single metric tells the full story. See the TPE:9921 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Giant Manufacturing Co Business Description

Address Dongda Road, No. 997 and 999, Section 1, Xitun District, Taichung, TWN, 40763
Giant Manufacturing Co Ltd manufactures and sells bicycles, electric bicycles and related parts. Its segments includes Bicycle, Materials, and Others. The company generates majority of its revenue from Bicycle segment.
68GF Score

Get the complete analysis for TPE:9921

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

NT$77.10
Price
NT$131.24
GF Value