International Consolidated Airlines Group (LSE:IAG) Cyclically Adjusted PB Ratio: (As of Jul. 30, 2026)

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LSE:IAG International Consolidated Airlines Group SA LSE:IAG
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What is International Consolidated Airlines Group Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


International Consolidated Airlines Group  (LSE:IAG) 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.


International Consolidated Airlines Group Cyclically Adjusted PB Ratio Related Terms


International Consolidated Airlines Group Cyclically Adjusted PB Ratio Historical Data

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The historical data trend for International Consolidated Airlines Group'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.

International Consolidated Airlines Group Cyclically Adjusted PB Ratio Chart

International Consolidated Airlines Group Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.72 0.65 0.83 1.66 2.35

International Consolidated Airlines Group Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted PB Ratio 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 0.00 1.90 0.00 2.35 0.00

LSE:IAG vs DAL, UAL, LUV: Cyclically Adjusted PB Ratio Comparison

For the Airlines subindustry, International Consolidated Airlines Group'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.


International Consolidated Airlines Group Cyclically Adjusted PB Ratio vs Transportation Industry

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

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


LSE:IAG
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International Consolidated Airlines Group SA LSE:IAG
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International Consolidated Airlines Group 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.

International Consolidated Airlines Group's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 is calculated as:

For example, International Consolidated Airlines Group'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)
=0/140.8000*140.8000
=0.000

Current CPI (Mar. 2026) = 140.8000.

International Consolidated Airlines Group Quarterly Data

Book Value per Share CPI Adj_Book
201606 1.661 101.000 2.316
201609 0.000 101.500 0.000
201612 2.134 102.200 2.940
201703 0.000 102.700 0.000
201706 1.956 103.500 2.661
201709 0.000 104.300 0.000
201712 2.856 105.000 3.830
201803 0.000 105.100 0.000
201806 3.318 105.900 4.411
201809 0.000 106.600 0.000
201812 3.042 107.100 3.999
201903 0.000 107.000 0.000
201906 2.942 107.900 3.839
201909 0.000 108.400 0.000
201912 3.028 108.500 3.929
202003 0.000 108.600 0.000
202006 0.353 108.800 0.457
202009 0.000 109.200 0.000
202012 0.292 109.400 0.376
202103 0.000 109.700 0.000
202106 0.157 111.400 0.198
202109 0.000 112.400 0.000
202112 0.144 114.700 0.177
202203 0.000 116.500 0.000
202206 0.310 120.500 0.362
202209 0.000 122.300 0.000
202212 0.354 125.300 0.398
202303 0.000 126.800 0.000
202306 0.361 129.400 0.393
202309 0.000 130.100 0.000
202312 0.573 130.500 0.618
202403 0.000 131.600 0.000
202406 0.820 133.000 0.868
202409 0.000 133.500 0.000
202412 1.053 135.100 1.097
202503 0.000 136.100 0.000
202506 1.084 138.400 1.103
202509 0.000 138.900 0.000
202512 1.454 139.900 1.463
202603 0.000 140.800 0.000

Add all the adjusted book value per share together and divide the count will get our 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.


International Consolidated Airlines Group Business Description

Address Speedbird Way, Waterside (HAA2), PO Box 365, Harmondsworth, GBR, UB7 0GB
International Airlines Group is a European airline group flying under the British Airways, Iberia, Aer Lingus, and Vueling brands. The group's main airport hubs are London Heathrow, London Gatwick, Madrid, Barcelona, and Dublin. Geographically, it derives a majority of its revenue from the United Kingdom.
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