Star Petroleum Refining PCL (BKK:SPRC) Cyclically Adjusted Book per Share: ฿10.54 (As of Mar. 2026)


BKK:SPRC Star Petroleum Refining PCL BKK:SPRC
78 GF Score
Price ฿7.70
GF Value ฿6.55
Valuation Modestly Overvalued
! 4 Warning Signs
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What is Star Petroleum Refining PCL Cyclically Adjusted Book per Share?

Star Petroleum Refining PCL BKK:SPRC +0.65% 78 Cyclically Adjusted Book per Share is ฿10.54 as of Mar. 2026. GuruFocus rates BKK:SPRC with a GF Score™ of 78/100 and a GF Value™ of ฿6.55 (Modestly Overvalued). 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.

Star Petroleum Refining PCL's adjusted book value per share for the three months ended in Mar. 2026 was ฿10.772. 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 ฿10.54 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Star Petroleum Refining PCL's 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.

As of today (2026-07-06), Star Petroleum Refining PCL's current stock price is ฿7.70. Star Petroleum Refining PCL's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was ฿10.54. Star Petroleum Refining PCL's Cyclically Adjusted PB Ratio of today is 0.73.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Star Petroleum Refining PCL was 0.86. The lowest was 0.41. And the median was 0.64.


Star Petroleum Refining PCL  (BKK:SPRC) 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.

Star Petroleum Refining PCL's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=7.70/10.54
=0.73

* 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 Star Petroleum Refining PCL was 0.86. The lowest was 0.41. And the median was 0.64.


Be Aware

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


Star Petroleum Refining PCL Cyclically Adjusted Book per Share Related Terms


Star Petroleum Refining PCL Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Star Petroleum Refining 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.

Star Petroleum Refining PCL Cyclically Adjusted Book per Share Chart

Star Petroleum Refining 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 0.00 0.00 10.57 10.32 10.38

Star Petroleum Refining 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 10.42 10.46 10.47 10.38 10.54

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

For the Oil & Gas Refining & Marketing subindustry, Star Petroleum Refining 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.


Star Petroleum Refining PCL Cyclically Adjusted PB Ratio vs Oil & Gas Industry

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

* The bar in red indicates where Star Petroleum Refining PCL's Cyclically Adjusted PB Ratio falls into.


BKK:SPRC
78GF Score
Star Petroleum Refining PCL BKK:SPRC
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
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Star Petroleum Refining 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, Star Petroleum Refining 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)
=10.772/330.2130*330.2130
=10.772

Current CPI (Mar. 2026) = 330.2130.

Star Petroleum Refining PCL Quarterly Data

Book Value per Share CPI Adj_Book
201606 9.073 241.018 12.431
201609 8.689 241.428 11.884
201612 9.622 241.432 13.160
201703 9.911 243.801 13.424
201706 9.291 244.955 12.525
201709 9.311 246.819 12.457
201712 9.710 246.524 13.006
201803 9.869 249.554 13.059
201806 10.286 251.989 13.479
201809 9.761 252.439 12.768
201812 8.886 251.233 11.679
201903 9.102 254.202 11.824
201906 8.664 256.143 11.169
201909 8.292 256.759 10.664
201912 7.490 256.974 9.625
202003 6.065 258.115 7.759
202006 6.016 257.797 7.706
202009 6.210 260.280 7.879
202012 6.095 260.474 7.727
202103 6.839 264.877 8.526
202106 7.167 271.696 8.711
202109 7.610 274.310 9.161
202112 7.927 278.802 9.389
202203 9.115 287.504 10.469
202206 11.178 296.311 12.457
202209 9.812 296.808 10.916
202212 8.927 296.797 9.932
202303 9.104 301.836 9.960
202306 8.810 305.109 9.535
202309 10.058 307.789 10.791
202312 9.863 306.746 10.618
202403 10.312 312.332 10.902
202406 10.458 314.175 10.992
202409 8.609 315.301 9.016
202412 9.018 315.605 9.435
202503 9.157 319.799 9.455
202506 8.507 322.561 8.709
202509 8.667 324.800 8.811
202512 8.744 324.054 8.910
202603 10.772 330.213 10.772

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 ฿10.54 mean?
Star Petroleum Refining PCL (BKK:SPRC) has a Cyclically Adjusted Book per Share of ฿10.54 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 Star Petroleum Refining PCL and its competitors.
Is Star Petroleum Refining PCL's Cyclically Adjusted Book per Share too high?
Star Petroleum Refining PCL's current Cyclically Adjusted Book per Share is ฿10.54. Overall, Star Petroleum Refining PCL has a GF Score™ of 78/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Star Petroleum Refining PCL's Cyclically Adjusted Book per Share compare to VLO and MPC?
Star Petroleum Refining PCL's Cyclically Adjusted Book per Share of ฿10.54 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 Star Petroleum Refining PCL and its competitors. Star Petroleum Refining PCL's current Cyclically Adjusted Book per Share is ฿10.54. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Star Petroleum Refining PCL stock overvalued right now?
Based on GuruFocus' analysis, Star Petroleum Refining PCL (BKK:SPRC) is currently considered Modestly Overvalued. The stock's GF Value™ is ฿6.55, compared to a current price of ฿7.70 — trading 17.6% above its estimated fair value. The current Cyclically Adjusted Book per Share is ฿10.54. Star Petroleum Refining PCL'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 Star Petroleum Refining PCL (BKK:SPRC), the current Cyclically Adjusted Book per Share is ฿10.54 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 Star Petroleum Refining PCL (BKK:SPRC) Overvalued in 2026?

Based on GuruFocus' analysis, Star Petroleum Refining PCL stock appears to be overvalued. The current stock price of ฿7.70 is trading 17.6% above its estimated GF Value™ of ฿6.55. GuruFocus considers Star Petroleum Refining PCL to be Modestly Overvalued.

Key valuation signals for BKK:SPRC:

  • Cyclically Adjusted Book per Share: ฿10.54
  • GF Value™: ฿6.55 vs. price of ฿7.70 (17.6% above fair value)
  • GF Score™: 78/100 with 4 warning signs

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


Star Petroleum Refining PCL Business Description

Industry EnergyOil & Gas
Address No.1, I-3B Road, Tambol Map Ta Phut, Amphur Muang Rayong, Rayong, THA, 21150
Star Petroleum Refining PCL operates petroleum refinery in Thailand. The company produces multiple petroleum products such as Liquefied Petroleum Gas, gasoline, jet fuel, diesel, fuel oil, asphalt, and others. Geographically the majority of its sales are conducted in Thailand. However, the company also produces petroleum products for international markets.
78GF Score

Get the complete analysis for BKK:SPRC

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

฿7.70
Price
฿6.55
GF Value