National Petroleum Co (TPE:9937) Cyclically Adjusted Book per Share: NT$19.41 (As of Dec. 2025)


TPE:9937 National Petroleum Co Ltd TPE:9937
78 GF Score
Price NT$55.30
GF Value NT$59.39
Valuation Fairly Valued
! 4 Warning Signs
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What is National Petroleum Co Cyclically Adjusted Book per Share?

National Petroleum Co TPE:9937 +0.55% 78 Cyclically Adjusted Book per Share is NT$19.41 as of Dec. 2025. GuruFocus rates TPE:9937 with a GF Score™ of 78/100 and a GF Value™ of NT$59.39 (Fairly Valued). The stock has 4 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

National Petroleum Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$18.843. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is NT$19.41 for the trailing ten years ended in Dec. 2025.

During the past 12 months, National Petroleum Co's average Cyclically Adjusted Book Growth Rate was 2.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 2.70% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 3.80% 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 Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of National Petroleum Co was 4.60% per year. The lowest was 2.60% per year. And the median was 3.70% per year.

As of today (2026-07-06), National Petroleum Co's current stock price is NT$55.30. National Petroleum Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$19.41. National Petroleum Co's Cyclically Adjusted PB Ratio of today is 2.85.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of National Petroleum Co was 4.00. The lowest was 2.49. And the median was 2.93.


National Petroleum Co  (TPE:9937) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

National Petroleum Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=55.30/19.41
=2.85

* 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 Cyclically Adjusted PB Ratio of National Petroleum Co was 4.00. The lowest was 2.49. And the median was 2.93.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


National Petroleum Co Cyclically Adjusted Book per Share Related Terms


National Petroleum Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for National Petroleum Co's Cyclically Adjusted Book per Share 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.

National Petroleum Co Cyclically Adjusted Book per Share Chart

National Petroleum Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 17.00 17.93 18.45 18.96 19.41

National Petroleum Co Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Cyclically Adjusted Book per Share 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 18.96 19.21 19.35 19.47 19.41

TPE:9937 vs CASY, WSM, DKS: Cyclically Adjusted Book per Share Comparison

For the Specialty Retail subindustry, National Petroleum Co's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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.


National Petroleum Co Cyclically Adjusted PB Ratio vs Retail - Cyclical Industry

For the Retail - Cyclical industry and Consumer Cyclical sector, National Petroleum Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where National Petroleum Co's Cyclically Adjusted PB Ratio falls into.


TPE:9937
78GF Score
National Petroleum Co Ltd TPE:9937
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

National Petroleum Co Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

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, National Petroleum Co's adjusted Book Value per Share data for the three months ended in Dec. 2025 was:

Adj_Book= Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=18.843/324.0540*324.0540
=18.843

Current CPI (Dec. 2025) = 324.0540.

National Petroleum Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 14.773 238.132 20.103
201606 13.968 241.018 18.780
201609 14.544 241.428 19.522
201612 15.176 241.432 20.369
201703 15.588 243.801 20.719
201706 13.984 244.955 18.500
201709 14.639 246.819 19.220
201712 15.283 246.524 20.089
201803 15.892 249.554 20.636
201806 14.510 251.989 18.660
201809 15.160 252.439 19.461
201812 15.558 251.233 20.068
201903 16.356 254.202 20.850
201906 14.897 256.143 18.847
201909 15.512 256.759 19.578
201912 16.081 256.974 20.279
202003 16.425 258.115 20.621
202006 15.269 257.797 19.193
202009 16.185 260.280 20.151
202012 16.861 260.474 20.977
202103 17.661 264.877 21.607
202106 18.190 271.696 21.695
202109 16.588 274.310 19.596
202112 17.260 278.802 20.061
202203 17.879 287.504 20.152
202206 16.099 296.311 17.606
202209 16.710 296.808 18.244
202212 17.311 296.797 18.901
202303 18.018 301.836 19.344
202306 16.499 305.109 17.523
202309 17.231 307.789 18.142
202312 17.943 306.746 18.955
202403 18.572 312.332 19.269
202406 17.169 314.175 17.709
202409 17.774 315.301 18.267
202412 18.436 315.605 18.930
202503 18.966 319.799 19.218
202506 17.401 322.561 17.482
202509 18.312 324.800 18.270
202512 18.843 324.054 18.843

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of NT$19.41 mean?
National Petroleum Co (TPE:9937) has a Cyclically Adjusted Book per Share of NT$19.41 as of Dec. 2025. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on National Petroleum Co and its competitors.
Is National Petroleum Co's Cyclically Adjusted Book per Share too high?
National Petroleum Co's current Cyclically Adjusted Book per Share is NT$19.41. Overall, National Petroleum Co has a GF Score™ of 78/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does National Petroleum Co's Cyclically Adjusted Book per Share compare to CASY and WSM?
National Petroleum Co's Cyclically Adjusted Book per Share of NT$19.41 can be compared against companies in the Retail - Cyclical industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Retail - Cyclical company?
A good Cyclically Adjusted Book per Share depends on the Retail - Cyclical industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on National Petroleum Co and its competitors. National Petroleum Co's current Cyclically Adjusted Book per Share is NT$19.41. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Petroleum Co stock overvalued right now?
Based on GuruFocus' analysis, National Petroleum Co (TPE:9937) is currently considered Fairly Valued. The stock's GF Value™ is NT$59.39, compared to a current price of NT$55.30 — trading 6.9% below its estimated fair value. The current Cyclically Adjusted Book per Share is NT$19.41. National Petroleum Co's overall GF Score™ is 78/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For National Petroleum Co (TPE:9937), the current Cyclically Adjusted Book per Share is NT$19.41 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 National Petroleum Co (TPE:9937) Overvalued in 2026?

Based on GuruFocus' analysis, National Petroleum Co stock appears to be undervalued. The current stock price of NT$55.30 is trading 6.9% below its estimated GF Value™ of NT$59.39. GuruFocus considers National Petroleum Co to be Fairly Valued.

Key valuation signals for TPE:9937:

  • Cyclically Adjusted Book per Share: NT$19.41
  • GF Value™: NT$59.39 vs. price of NT$55.30 (6.9% below fair value)
  • GF Score™: 78/100 with 4 warning signs

No single metric tells the full story. See the TPE:9937 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


National Petroleum Co Business Description

Address No. 140, Roosevelt Road, 4th Floor, Section 6, Taipei, TWN
National Petroleum Co Ltd is engaged in providing and selling gasoline, diesel, and lubricant, as well as car washing services. The main revenue of the Group is generated from the sales of refined petroleum products supplied and sold through the Group's gas stations. The sales targets are mainly consumers at gas stations.
78GF Score

Get the complete analysis for TPE:9937

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$55.30
Price
NT$59.39
GF Value