Thai Nam Plastic PCL (BKK:TNPC) Cyclically Adjusted Book per Share: ฿1.88 (As of Mar. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

BKK:TNPC Thai Nam Plastic PCL BKK:TNPC
47 GF Score
Price ฿0.91
GF Value ฿0.91
Valuation Fairly Valued
! 7 Warning Signs
View Full Analysis

What is Thai Nam Plastic PCL Cyclically Adjusted Book per Share?

Thai Nam Plastic PCL BKK:TNPC -1.09% 47 Cyclically Adjusted Book per Share is ฿1.88 as of Mar. 2026. GuruFocus rates BKK:TNPC with a GF Score™ of 47/100 and a GF Value™ of ฿0.91 (Fairly Valued). The stock has 7 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.

Thai Nam Plastic PCL's adjusted book value per share for the three months ended in Mar. 2026 was ฿1.141. 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 ฿1.88 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Thai Nam Plastic PCL's average Cyclically Adjusted Book Growth Rate was -2.60% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -1.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 1.20% 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 Thai Nam Plastic PCL was 2.40% per year. The lowest was -1.00% per year. And the median was 1.00% per year.

As of today (2026-07-14), Thai Nam Plastic PCL's current stock price is ฿0.91. Thai Nam Plastic PCL's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was ฿1.88. Thai Nam Plastic PCL's Cyclically Adjusted PB Ratio of today is 0.48.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Thai Nam Plastic PCL was 2.18. The lowest was 0.28. And the median was 0.62.


Thai Nam Plastic PCL  (BKK:TNPC) 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.

Thai Nam Plastic PCL's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=0.91/1.88
=0.48

* 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 Thai Nam Plastic PCL was 2.18. The lowest was 0.28. And the median was 0.62.


Be Aware

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


Thai Nam Plastic PCL Cyclically Adjusted Book per Share Related Terms


Thai Nam Plastic PCL Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Thai Nam Plastic PCL'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.

Thai Nam Plastic PCL Cyclically Adjusted Book per Share Chart

Thai Nam Plastic PCL 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 1.84 1.94 1.90 1.93 1.88

Thai Nam Plastic PCL Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 1.93 1.93 1.91 1.88 1.88

BKK:TNPC vs ORLY, AZO: Cyclically Adjusted Book per Share Comparison

For the Auto Parts subindustry, Thai Nam Plastic PCL'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.


Thai Nam Plastic PCL Cyclically Adjusted PB Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Thai Nam Plastic PCL's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Thai Nam Plastic PCL's Cyclically Adjusted PB Ratio falls into.


BKK:TNPC
47GF Score
Thai Nam Plastic PCL BKK:TNPC
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Thai Nam Plastic PCL 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, Thai Nam Plastic PCL's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=1.141/330.2130*330.2130
=1.141

Current CPI (Mar. 2026) = 330.2130.

Thai Nam Plastic PCL Quarterly Data

Book Value per Share CPI Adj_Book
201606 1.824 241.018 2.499
201609 1.819 241.428 2.488
201612 1.772 241.432 2.424
201703 1.769 243.801 2.396
201706 1.772 244.955 2.389
201709 1.804 246.819 2.414
201712 1.666 246.524 2.232
201803 1.717 249.554 2.272
201806 1.703 251.989 2.232
201809 1.746 252.439 2.284
201812 1.685 251.233 2.215
201903 1.657 254.202 2.152
201906 1.534 256.143 1.978
201909 1.474 256.759 1.896
201912 1.357 256.974 1.744
202003 1.250 258.115 1.599
202006 1.183 257.797 1.515
202009 1.196 260.280 1.517
202012 1.299 260.474 1.647
202103 1.366 264.877 1.703
202106 1.440 271.696 1.750
202109 1.457 274.310 1.754
202112 1.528 278.802 1.810
202203 1.659 287.504 1.905
202206 1.559 296.311 1.737
202209 1.558 296.808 1.733
202212 1.479 296.797 1.646
202303 1.456 301.836 1.593
202306 1.509 305.109 1.633
202309 1.559 307.789 1.673
202312 1.585 306.746 1.706
202403 2.024 312.332 2.140
202406 1.919 314.175 2.017
202409 1.852 315.301 1.940
202412 1.653 315.605 1.730
202503 1.600 319.799 1.652
202506 1.523 322.561 1.559
202509 1.237 324.800 1.258
202512 1.153 324.054 1.175
202603 1.141 330.213 1.141

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 ฿1.88 mean?
Thai Nam Plastic PCL (BKK:TNPC) has a Cyclically Adjusted Book per Share of ฿1.88 as of Mar. 2026. 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 Thai Nam Plastic PCL and its competitors.
Is Thai Nam Plastic PCL's Cyclically Adjusted Book per Share too high?
Thai Nam Plastic PCL's current Cyclically Adjusted Book per Share is ฿1.88. Overall, Thai Nam Plastic PCL has a GF Score™ of 47/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Thai Nam Plastic PCL's Cyclically Adjusted Book per Share compare to ORLY and AZO?
Thai Nam Plastic PCL's Cyclically Adjusted Book per Share of ฿1.88 can be compared against companies in the Vehicles & Parts 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 Vehicles & Parts company?
A good Cyclically Adjusted Book per Share depends on the Vehicles & Parts 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 Thai Nam Plastic PCL and its competitors. Thai Nam Plastic PCL's current Cyclically Adjusted Book per Share is ฿1.88. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Thai Nam Plastic PCL stock overvalued right now?
Based on GuruFocus' analysis, Thai Nam Plastic PCL (BKK:TNPC) is currently considered Fairly Valued. The stock's GF Value™ is ฿0.91, compared to a current price of ฿0.91 — trading right at its estimated fair value. The current Cyclically Adjusted Book per Share is ฿1.88. Thai Nam Plastic PCL's overall GF Score™ is 47/100 with 7 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 Thai Nam Plastic PCL (BKK:TNPC), the current Cyclically Adjusted Book per Share is ฿1.88 as of Mar. 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 Thai Nam Plastic PCL (BKK:TNPC) Overvalued in 2026?

Based on GuruFocus' analysis, Thai Nam Plastic PCL stock appears to be undervalued. The current stock price of ฿0.91 is trading 0% below its estimated GF Value™ of ฿0.91. GuruFocus considers Thai Nam Plastic PCL to be Fairly Valued.

Key valuation signals for BKK:TNPC:

  • Cyclically Adjusted Book per Share: ฿1.88
  • GF Value™: ฿0.91 vs. price of ฿0.91 (0% below fair value)
  • GF Score™: 47/100 with 7 warning signs

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


Thai Nam Plastic PCL Business Description

Address Petchakasem Road, KM.23, 40 Moo 7, Omnoi, Amphur Kratumban, Samutsakorn, THA, 74130
Thai Nam Plastic PCL engages in the production and distribution of flexible plastic, synthetic leather, and car mats. The Group's main business operations are the manufacture and distribution of semi-finished plastic products, synthetic leather, and film/sheet for the industries of Automotive, sports shoes, furniture, and fashionable leather, and flexible film/sheet for applications in household, civil engineering, and agricultural functions. The company has domestic and international areas, with the majority of revenue from Domestic.
47GF Score

Get the complete analysis for BKK:TNPC

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

฿0.91
Price
฿0.91
GF Value