Singapore Airlines (SGX:C6L) Cyclically Adjusted Book per Share: S$8.01 (As of Jun. 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.

SGX:C6L Singapore Airlines Ltd SGX:C6L
85 GF Score
Price S$7.77
GF Value S$7.14
Valuation Fairly Valued
! 9 Warning Signs
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What is Singapore Airlines Cyclically Adjusted Book per Share?

Singapore Airlines SGX:C6L +0.78% 85 Cyclically Adjusted Book per Share is S$8.01 as of Jun. 2026. GuruFocus rates SGX:C6L with a GF Score™ of 85/100 and a GF Value™ of S$7.14 (Fairly Valued). The stock has 9 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.

Singapore Airlines's adjusted book value per share for the three months ended in Jun. 2026 was S$5.264. 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 S$8.01 for the trailing ten years ended in Jun. 2026.

During the past 12 months, Singapore Airlines's average Cyclically Adjusted Book Growth Rate was -100.00% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -3.00% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -0.70% 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 Singapore Airlines was 1.70% per year. The lowest was -3.00% per year. And the median was 0.00% per year.

As of today (2026-07-29), Singapore Airlines's current stock price is S$7.77. Singapore Airlines's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 was S$8.01. Singapore Airlines's Cyclically Adjusted PB Ratio of today is 0.97.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Singapore Airlines was 0.97. The lowest was 0.41. And the median was 0.76.


Singapore Airlines  (SGX:C6L) 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.

Singapore Airlines's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=7.77/8.01
=0.97

* 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 Singapore Airlines was 0.97. The lowest was 0.41. And the median was 0.76.


Be Aware

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


Singapore Airlines Cyclically Adjusted Book per Share Related Terms


Singapore Airlines Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Singapore Airlines'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.

Singapore Airlines Cyclically Adjusted Book per Share Chart

Singapore Airlines Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 8.70 8.84 8.65 8.34 8.06

Singapore Airlines 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 8.28 8.20 8.04 8.06 8.01

SGX:C6L vs DAL, UAL, LUV: Cyclically Adjusted Book per Share Comparison

For the Airlines subindustry, Singapore Airlines'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.


Singapore Airlines Cyclically Adjusted PB Ratio vs Transportation Industry

For the Transportation industry and Industrials sector, Singapore Airlines's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Singapore Airlines's Cyclically Adjusted PB Ratio falls into.


SGX:C6L
85GF Score
Singapore Airlines Ltd SGX:C6L
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Singapore Airlines 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, Singapore Airlines'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)
=5.264/333.9520*333.9520
=5.264

Current CPI (Jun. 2026) = 333.9520.

Singapore Airlines Quarterly Data

Book Value per Share CPI Adj_Book
201609 7.893 241.428 10.918
201612 8.255 241.432 11.418
201703 6.729 243.801 9.217
201706 7.827 244.955 10.671
201709 8.027 246.819 10.861
201712 8.360 246.524 11.325
201803 7.662 249.554 10.253
201806 8.310 251.989 11.013
201809 8.364 252.439 11.065
201812 7.300 251.233 9.704
201903 7.909 254.202 10.390
201906 7.501 256.143 9.780
201909 7.014 256.759 9.123
201912 7.223 256.974 9.387
202003 5.537 258.115 7.164
202006 5.930 257.797 7.682
202009 5.144 260.280 6.600
202012 5.283 260.474 6.773
202103 5.365 264.877 6.764
202106 7.527 271.696 9.252
202109 7.399 274.310 9.008
202112 7.454 278.802 8.928
202203 7.552 287.504 8.772
202206 7.721 296.311 8.702
202209 7.805 296.808 8.782
202212 6.545 296.797 7.364
202303 6.685 301.836 7.396
202306 5.772 305.109 6.318
202309 5.828 307.789 6.323
202312 5.239 306.746 5.704
202403 5.494 312.332 5.874
202406 5.058 314.175 5.376
202409 4.613 315.301 4.886
202412 5.166 315.605 5.466
202503 5.266 319.799 5.499
202506 5.304 322.561 5.491
202509 4.970 324.800 5.110
202512 5.028 324.054 5.182
202603 5.478 330.213 5.540
202606 5.264 333.952 5.264

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 S$8.01 mean?
Singapore Airlines (SGX:C6L) has a Cyclically Adjusted Book per Share of S$8.01 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 Singapore Airlines and its competitors.
Is Singapore Airlines' Cyclically Adjusted Book per Share too high?
Singapore Airlines' current Cyclically Adjusted Book per Share is S$8.01. Overall, Singapore Airlines has a GF Score™ of 85/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Singapore Airlines' Cyclically Adjusted Book per Share compare to DAL and UAL?
Singapore Airlines' Cyclically Adjusted Book per Share of S$8.01 can be compared against companies in the Transportation 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 Transportation company?
A good Cyclically Adjusted Book per Share depends on the Transportation 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 Singapore Airlines and its competitors. Singapore Airlines's current Cyclically Adjusted Book per Share is S$8.01. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Singapore Airlines stock overvalued right now?
Based on GuruFocus' analysis, Singapore Airlines (SGX:C6L) is currently considered Fairly Valued. The stock's GF Value™ is S$7.14, compared to a current price of S$7.77 — trading 8.8% above its estimated fair value. The current Cyclically Adjusted Book per Share is S$8.01. Singapore Airlines' overall GF Score™ is 85/100 with 9 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 Singapore Airlines (SGX:C6L), the current Cyclically Adjusted Book per Share is S$8.01 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 Singapore Airlines (SGX:C6L) Overvalued in 2026?

Based on GuruFocus' analysis, Singapore Airlines stock appears to be overvalued. The current stock price of S$7.77 is trading 8.8% above its estimated GF Value™ of S$7.14. GuruFocus considers Singapore Airlines to be Fairly Valued.

Key valuation signals for SGX:C6L:

  • Cyclically Adjusted Book per Share: S$8.01
  • GF Value™: S$7.14 vs. price of S$7.77 (8.8% above fair value)
  • GF Score™: 85/100 with 9 warning signs

No single metric tells the full story. See the SGX:C6L stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Singapore Airlines Business Description

Address 25 Airline Road, Airline House, Sinagapore, SGP, 819829
Singapore Airlines is Singapore's flagship carrier and one of the region's largest airlines in terms of revenue and carrying capacity. With its hub in Changi Airport, the carrier provides regional and cross-continental passenger and cargo services destined to or transiting through Singapore. The company operates under dual brands: full-service carrier SIA and low-cost regional carrier Scoot. It also owns stakes in SATS and SIA Engineering. In 2024, the merger of its associate airline Vistara with Air India resulted in Singapore Airlines owning a 25% stake in Air India.
85GF Score

Get the complete analysis for SGX:C6L

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

S$7.77
Price
S$7.14
GF Value