Siamgas And Petrochemicals PCL (BKK:SGP) Cyclically Adjusted Book per Share: ฿8.56 (As of Mar. 2026)

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Director of Data and Quant Analytics at GuruFocus
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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:SGP Siamgas And Petrochemicals PCL BKK:SGP
62 GF Score
Price ฿7.95
GF Value ฿6.32
Valuation Modestly Overvalued
! 7 Warning Signs
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What is Siamgas And Petrochemicals PCL Cyclically Adjusted Book per Share?

Siamgas And Petrochemicals PCL BKK:SGP -1.85% 62 Cyclically Adjusted Book per Share is ฿8.56 as of Mar. 2026. GuruFocus rates BKK:SGP with a GF Score™ of 62/100 and a GF Value™ of ฿6.32 (Modestly Overvalued). 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.

Siamgas And Petrochemicals PCL's adjusted book value per share for the three months ended in Mar. 2026 was ฿9.609. 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 ฿8.56 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Siamgas And Petrochemicals PCL's average Cyclically Adjusted Book Growth Rate was 5.50% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 6.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 10.20% 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 Siamgas And Petrochemicals PCL was 13.20% per year. The lowest was 6.40% per year. And the median was 9.95% per year.

As of today (2026-07-14), Siamgas And Petrochemicals PCL's current stock price is ฿7.95. Siamgas And Petrochemicals PCL's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was ฿8.56. Siamgas And Petrochemicals PCL's Cyclically Adjusted PB Ratio of today is 0.93.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Siamgas And Petrochemicals PCL was 3.95. The lowest was 0.77. And the median was 1.74.


Siamgas And Petrochemicals PCL  (BKK:SGP) 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.

Siamgas And Petrochemicals PCL's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=7.95/8.56
=0.93

* 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 Siamgas And Petrochemicals PCL was 3.95. The lowest was 0.77. And the median was 1.74.


Be Aware

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


Siamgas And Petrochemicals PCL Cyclically Adjusted Book per Share Related Terms


Siamgas And Petrochemicals PCL Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Siamgas And Petrochemicals 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.

Siamgas And Petrochemicals PCL Cyclically Adjusted Book per Share Chart

Siamgas And Petrochemicals 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 5.89 6.92 7.43 7.93 8.34

Siamgas And Petrochemicals 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 8.11 8.23 8.33 8.34 8.56

BKK:SGP vs VLO, MPC, PSX: Cyclically Adjusted Book per Share Comparison

For the Oil & Gas Refining & Marketing subindustry, Siamgas And Petrochemicals 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.


Siamgas And Petrochemicals PCL Cyclically Adjusted PB Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, Siamgas And Petrochemicals PCL's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Siamgas And Petrochemicals PCL's Cyclically Adjusted PB Ratio falls into.


BKK:SGP
62GF Score
Siamgas And Petrochemicals PCL BKK:SGP
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
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Siamgas And Petrochemicals 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, Siamgas And Petrochemicals 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)
=9.609/330.2130*330.2130
=9.609

Current CPI (Mar. 2026) = 330.2130.

Siamgas And Petrochemicals PCL Quarterly Data

Book Value per Share CPI Adj_Book
201606 5.029 241.018 6.890
201609 4.803 241.428 6.569
201612 5.265 241.432 7.201
201703 5.673 243.801 7.684
201706 5.461 244.955 7.362
201709 5.621 246.819 7.520
201712 6.061 246.524 8.119
201803 5.972 249.554 7.902
201806 5.954 251.989 7.802
201809 5.903 252.439 7.722
201812 5.434 251.233 7.142
201903 5.690 254.202 7.391
201906 5.764 256.143 7.431
201909 5.489 256.759 7.059
201912 6.029 256.974 7.747
202003 6.155 258.115 7.874
202006 5.874 257.797 7.524
202009 6.334 260.280 8.036
202012 6.785 260.474 8.602
202103 7.720 264.877 9.624
202106 7.606 271.696 9.244
202109 8.450 274.310 10.172
202112 8.927 278.802 10.573
202203 9.410 287.504 10.808
202206 8.962 296.311 9.987
202209 9.093 296.808 10.116
202212 8.443 296.797 9.394
202303 8.511 301.836 9.311
202306 7.704 305.109 8.338
202309 8.457 307.789 9.073
202312 8.475 306.746 9.123
202403 9.276 312.332 9.807
202406 9.551 314.175 10.039
202409 8.740 315.301 9.153
202412 9.117 315.605 9.539
202503 9.133 319.799 9.430
202506 8.375 322.561 8.574
202509 8.148 324.800 8.284
202512 8.348 324.054 8.507
202603 9.609 330.213 9.609

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 ฿8.56 mean?
Siamgas And Petrochemicals PCL (BKK:SGP) has a Cyclically Adjusted Book per Share of ฿8.56 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 Siamgas And Petrochemicals PCL and its competitors.
Is Siamgas And Petrochemicals PCL's Cyclically Adjusted Book per Share too high?
Siamgas And Petrochemicals PCL's current Cyclically Adjusted Book per Share is ฿8.56. Overall, Siamgas And Petrochemicals PCL has a GF Score™ of 62/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Siamgas And Petrochemicals PCL's Cyclically Adjusted Book per Share compare to VLO and MPC?
Siamgas And Petrochemicals PCL's Cyclically Adjusted Book per Share of ฿8.56 can be compared against companies in the Oil & Gas 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 an Oil & Gas company?
A good Cyclically Adjusted Book per Share depends on the Oil & Gas 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 Siamgas And Petrochemicals PCL and its competitors. Siamgas And Petrochemicals PCL's current Cyclically Adjusted Book per Share is ฿8.56. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Siamgas And Petrochemicals PCL stock overvalued right now?
Based on GuruFocus' analysis, Siamgas And Petrochemicals PCL (BKK:SGP) is currently considered Modestly Overvalued. The stock's GF Value™ is ฿6.32, compared to a current price of ฿7.95 — trading 25.8% above its estimated fair value. The current Cyclically Adjusted Book per Share is ฿8.56. Siamgas And Petrochemicals PCL's overall GF Score™ is 62/100 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 Siamgas And Petrochemicals PCL (BKK:SGP), the current Cyclically Adjusted Book per Share is ฿8.56 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 Siamgas And Petrochemicals PCL (BKK:SGP) Overvalued in 2026?

Based on GuruFocus' analysis, Siamgas And Petrochemicals PCL stock appears to be overvalued. The current stock price of ฿7.95 is trading 25.8% above its estimated GF Value™ of ฿6.32. GuruFocus considers Siamgas And Petrochemicals PCL to be Modestly Overvalued.

Key valuation signals for BKK:SGP:

  • Cyclically Adjusted Book per Share: ฿8.56
  • GF Value™: ฿6.32 vs. price of ฿7.95 (25.8% above fair value)
  • GF Score™: 62/100 with 7 warning signs

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


Siamgas And Petrochemicals PCL Business Description

Industry EnergyOil & Gas
Other Exchanges 4QVA:Germany
Address Ratchaprarop Road, 553, The Palladium Building, 30th Floor, Makkasan, Ratchathewi, Bangkok, THA, 10400
Siamgas And Petrochemicals PCL is engaged in trading petroleum and petrochemicals, transportation services by land and ship and oil depots, and port services. Its segments include Petroleum & petrochemical products, which is engaged in trading of petroleum for household cooking, industry & transportation businesses, and petrochemical trading; Transportation services, which provides transportation services by land & ship; and Others segment, which is into Cylinder manufacturing, holding business and oil depots & port services. Its operations are carried out in Thailand, and Overseas. The company generates the majority of its revenue from the overseas market.
62GF Score

Get the complete analysis for BKK:SGP

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

฿7.95
Price
฿6.32
GF Value