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Singapore AirlinesBKK:SIA19 -1.14%54 Cyclically Adjusted PB Ratio is 0.85 as of Sep. 05, 2026, which is 12% above its 10-year median of 0.76. GuruFocus rates BKK:SIA19 with a GF Score™ of 54/100 and a GF Value™ of ฿18.46 (Fairly Valued). The stock has 5 warning signs investors should review. Among 698 Transportation companies, Singapore Airlines ranks better than 69.77% on this metric.
The historical rank and industry rank for Singapore Airlines's Cyclically Adjusted PB Ratio or its related term are showing as below:
BKK:SIA19'
s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 0.41 Med: 0.76 Max: 0.96
Current: 0.84
During the past years, Singapore Airlines's highest Cyclically Adjusted PB Ratio was 0.96. The lowest was 0.41. And the median was 0.76.
BKK:SIA19's Cyclically Adjusted PB Ratio is ranked better than 69.77% of 698
companies
in the Transportation industry
Industry Median: 1.285
vs BKK:SIA19: 0.84
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 adjusted book value per share data for the three months ended in Jun. 2026 was ฿134.468. 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 ฿20.55 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Singapore Airlines (BKK:SIA19) Cyclically Adjusted PB Ratio Explanation
Compared with the regular PB Ratio, which works poorly for cyclical businesses, the Cyclically Adjusted PB Ratio smoothed out the fluctuations of book value during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Cyclically Adjusted PB Ratio should give similar results to regular PB Ratio.
Singapore Airlines Cyclically Adjusted PB Ratio Related Terms
Singapore Airlines Cyclically Adjusted PB Ratio Historical Data
* Premium members only.
The historical data trend for Singapore Airlines's Cyclically Adjusted PB Ratio 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 PB Ratio Chart
BKK:SIA19 vs DAL, UAL, LUV: Cyclically Adjusted PB Ratio 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.
Singapore Airlines Cyclically Adjusted PB Ratio Calculation
Like the Shiller PE Ratio, the Cyclically Adjusted PB Ratio takes the Book Value per Share from the past 10 years, adjusts it for inflation, and then calculates the average. This average is then used for the P/B calculation. Because it considers this 10-year average, it's often referred to as the CAPB Ratio.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio.
Singapore Airlines's Cyclically Adjusted PB Ratio for today is calculated as
* 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.
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.
What does a Cyclically Adjusted PB Ratio of 0.85 mean?
Singapore Airlines (BKK:SIA19) has a Cyclically Adjusted PB Ratio of 0.85 as of Sep. 05, 2026. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Singapore Airlines and its competitors. This is 12% above median its historical median of 0.76. Over the past decade, Singapore Airlines' Cyclically Adjusted PB Ratio has ranged from 0.41 to 0.96. According to the industry distribution chart, Singapore Airlines ranks #211 out of 698 companies in the Transportation industry, placing it in the top 30.2%.
Is Singapore Airlines' Cyclically Adjusted PB Ratio too high?
Singapore Airlines' current Cyclically Adjusted PB Ratio of 0.85 is 12% above median its 10-year median of 0.76. Over the past 10 years, this metric has ranged from a low of 0.41 to a high of 0.96. The Transportation industry median Cyclically Adjusted PB Ratio is 1.29. Singapore Airlines' value of 0.85 is 33.9% below this industry median. Based on the distribution chart, Singapore Airlines ranks #211 out of 698 companies in the Transportation industry, which is above the industry midpoint. Overall, Singapore Airlines has a GF Score™ of 54/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Singapore Airlines' Cyclically Adjusted PB Ratio compare to DAL and UAL?
According to the Transportation industry distribution chart, Singapore Airlines ranks #211 out of 698 companies for Cyclically Adjusted PB Ratio. This puts Singapore Airlines in the upper half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.29. Singapore Airlines' value of 0.85 is 33.9% below this benchmark. Historically, Singapore Airlines' own Cyclically Adjusted PB Ratio has ranged from 0.41 to 0.96 over the past decade. While the company's 10-year median is 0.76 vs. the industry median of 1.29, Singapore Airlines has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted PB Ratio for a Transportation company?
The median Cyclically Adjusted PB Ratio among Transportation companies is 1.29, based on 698 companies in the industry. Companies in the top quartile (top 25%) have a Cyclically Adjusted PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, Cyclically Adjusted PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Singapore Airlines's current Cyclically Adjusted PB Ratio of 0.85 is 33.9% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted PB Ratio mean?
A high Cyclically Adjusted PB Ratio can signal that a stock is expensive relative to its fundamentals. Cyclically Adjusted PB Ratio is the ratio of share price to a company's inflation-adjusted book value per share over a 10-year period. View historical data on Singapore Airlines and its competitors. For the Transportation industry, the median Cyclically Adjusted PB Ratio is 1.29 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Singapore Airlines's current Cyclically Adjusted PB Ratio is 0.85, which is 12% above median its own 10-year median of 0.76. 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 (BKK:SIA19) is currently considered Fairly Valued. The stock's GF Value™ is ฿18.46, compared to a current price of ฿17.40 — trading 5.7% below its estimated fair value. The current Cyclically Adjusted PB Ratio is 0.85, which is 12% above median its 10-year median of 0.76 and 33.9% below the Transportation industry median of 1.29. Singapore Airlines' overall GF Score™ is 54/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Singapore Airlines (BKK:SIA19), the current Cyclically Adjusted PB Ratio is 0.85 as of Sep. 05, 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 (BKK:SIA19) Overvalued in 2026?
Based on GuruFocus' analysis, Singapore Airlines stock appears to be undervalued.
The current stock price of ฿17.40 is trading 5.7% below its estimated GF Value™ of ฿18.46.
GuruFocus considers Singapore Airlines to be Fairly Valued.
Key valuation signals for BKK:SIA19:
Cyclically Adjusted PB Ratio: 0.85 (12% above median its 10-year median of 0.76)
GF Value™: ฿18.46 vs. price of ฿17.40 (5.7% below fair value)
Industry Position: 33.9% below the Transportation median (#211 of 698)
No single metric tells the full story. See the BKK:SIA19 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
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.
54GF Score
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