Siam Pan Group PCL (BKK:SPG) Cyclically Adjusted Book per Share: ฿18.29 (As of Jun. 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:SPG Siam Pan Group PCL BKK:SPG
71 GF Score
Price ฿11.60
GF Value ฿12.73
Valuation Fairly Valued
! 4 Warning Signs
View Full Analysis

What is Siam Pan Group PCL Cyclically Adjusted Book per Share?

Siam Pan Group PCL BKK:SPG +0.87% 71 Cyclically Adjusted Book per Share is ฿18.29 as of Jun. 2026. GuruFocus rates BKK:SPG with a GF Score™ of 71/100 and a GF Value™ of ฿12.73 (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.

Siam Pan Group PCL's adjusted book value per share for the three months ended in Jun. 2026 was ฿16.587. 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 ฿18.29 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Siam Pan Group PCL's average Cyclically Adjusted Book Growth Rate was 3.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 3.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 5.50% 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 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 Siam Pan Group PCL was 7.70% per year. The lowest was 3.40% per year. And the median was 6.40% per year.

As of today (2026-08-22), Siam Pan Group PCL's current stock price is ฿11.60. Siam Pan Group PCL's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was ฿18.29. Siam Pan Group PCL's Cyclically Adjusted PB Ratio of today is 0.63.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Siam Pan Group PCL was 1.65. The lowest was 0.58. And the median was 1.00.


Siam Pan Group PCL  (BKK:SPG) 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.

Siam Pan Group PCL's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=11.60/18.29
=0.63

* 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 Siam Pan Group PCL was 1.65. The lowest was 0.58. And the median was 1.00.


Be Aware

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


Siam Pan Group PCL Cyclically Adjusted Book per Share Related Terms


Siam Pan Group PCL Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Siam Pan Group 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.

Siam Pan Group PCL Cyclically Adjusted Book per Share Chart

Siam Pan Group 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 14.89 16.12 16.83 17.37 17.81

Siam Pan Group PCL Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 17.74 17.86 17.81 18.13 18.29

BKK:SPG vs LIN, SHW, ECL: Cyclically Adjusted Book per Share Comparison

For the Specialty Chemicals subindustry, Siam Pan Group 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.


Siam Pan Group PCL Cyclically Adjusted PB Ratio vs Chemicals Industry

For the Chemicals industry and Basic Materials sector, Siam Pan Group PCL's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Siam Pan Group PCL's Cyclically Adjusted PB Ratio falls into.


BKK:SPG
71GF Score
Siam Pan Group PCL BKK:SPG
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Siam Pan Group 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, Siam Pan Group PCL's adjusted Book Value per Share data for the three months ended in Jun. 2026 was:

Adj_Book= Book Value per Share /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=16.587/333.9520*333.9520
=16.587

Current CPI (Jun. 2026) = 333.9520.

Siam Pan Group PCL Quarterly Data

Book Value per Share CPI Adj_Book
201609 13.089 241.428 18.105
201612 13.498 241.432 18.671
201703 13.460 243.801 18.437
201706 13.867 244.955 18.905
201709 13.648 246.819 18.466
201712 13.930 246.524 18.870
201803 14.232 249.554 19.045
201806 14.055 251.989 18.627
201809 14.245 252.439 18.845
201812 14.568 251.233 19.365
201903 14.733 254.202 19.355
201906 14.285 256.143 18.624
201909 14.451 256.759 18.796
201912 14.762 256.974 19.184
202003 15.024 258.115 19.438
202006 14.643 257.797 18.969
202009 14.851 260.280 19.055
202012 15.143 260.474 19.415
202103 15.610 264.877 19.681
202106 15.558 271.696 19.123
202109 15.811 274.310 19.249
202112 15.587 278.802 18.670
202203 15.966 287.504 18.545
202206 15.840 296.311 17.852
202209 16.032 296.808 18.038
202212 16.152 296.797 18.174
202303 16.456 301.836 18.207
202306 15.861 305.109 17.360
202309 16.055 307.789 17.420
202312 16.348 306.746 17.798
202403 16.600 312.332 17.749
202406 15.996 314.175 17.003
202409 16.144 315.301 17.099
202412 16.263 315.605 17.208
202503 16.540 319.799 17.272
202506 16.421 322.561 17.001
202509 16.562 324.800 17.029
202512 16.748 324.054 17.260
202603 17.086 330.213 17.279
202606 16.587 333.952 16.587

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 ฿18.29 mean?
Siam Pan Group PCL (BKK:SPG) has a Cyclically Adjusted Book per Share of ฿18.29 as of Jun. 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 Siam Pan Group PCL and its competitors.
Is Siam Pan Group PCL's Cyclically Adjusted Book per Share too high?
Siam Pan Group PCL's current Cyclically Adjusted Book per Share is ฿18.29. Overall, Siam Pan Group PCL has a GF Score™ of 71/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Siam Pan Group PCL's Cyclically Adjusted Book per Share compare to LIN and SHW?
Siam Pan Group PCL's Cyclically Adjusted Book per Share of ฿18.29 can be compared against companies in the Chemicals 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 Chemicals company?
A good Cyclically Adjusted Book per Share depends on the Chemicals 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 Siam Pan Group PCL and its competitors. Siam Pan Group PCL's current Cyclically Adjusted Book per Share is ฿18.29. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Siam Pan Group PCL stock overvalued right now?
Based on GuruFocus' analysis, Siam Pan Group PCL (BKK:SPG) is currently considered Fairly Valued. The stock's GF Value™ is ฿12.73, compared to a current price of ฿11.60 — trading 8.9% below its estimated fair value. The current Cyclically Adjusted Book per Share is ฿18.29. Siam Pan Group PCL's overall GF Score™ is 71/100 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 Siam Pan Group PCL (BKK:SPG), the current Cyclically Adjusted Book per Share is ฿18.29 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 Siam Pan Group PCL (BKK:SPG) Overvalued in 2026?

Based on GuruFocus' analysis, Siam Pan Group PCL stock appears to be undervalued. The current stock price of ฿11.60 is trading 8.9% below its estimated GF Value™ of ฿12.73. GuruFocus considers Siam Pan Group PCL to be Fairly Valued.

Key valuation signals for BKK:SPG:

  • Cyclically Adjusted Book per Share: ฿18.29
  • GF Value™: ฿12.73 vs. price of ฿11.60 (8.9% below fair value)
  • GF Score™: 71/100 with 4 warning signs

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


Siam Pan Group PCL Business Description

Address No. 488, Nakhon Sawan Road, Mahanak Junction, Dusit District, Bangkok, THA, 10300
Siam Pan Group PCL is a Thailand-based company that is engaged in the manufacturing and distributing of lubricating oil, grease, and batteries. The company has the following crucial segments which include Grease, and Lubricating Oil. In terms of revenue, the Grease segment generates more revenue for the company. The organization has its branches present in Thailand, Myanmar and Other countries of which it generates maximum revenue from Thailand.
71GF Score

Get the complete analysis for BKK:SPG

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

฿11.60
Price
฿12.73
GF Value