Aeroporto Guglielmo Marconi di Bologna SpA (MIL:ADB) Cyclically Adjusted PB Ratio: 1.77 (As of Jul. 16, 2026) — 17% Above Median

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

MIL:ADB Aeroporto Guglielmo Marconi di Bologna SpA MIL:ADB
73 GF Score
Price €10.25
GF Value €9.67
Valuation Fairly Valued
! 4 Warning Signs
View Full Analysis

What is Aeroporto Guglielmo Marconi di Bologna SpA Cyclically Adjusted PB Ratio?

Aeroporto Guglielmo Marconi di Bologna SpA MIL:ADB +0.99% 73 Cyclically Adjusted PB Ratio is 1.77 as of Jul. 16, 2026, which is 17% above its 10-year median of 1.51. GuruFocus rates MIL:ADB with a GF Score™ of 73/100 and a GF Value™ of €9.67 (Fairly Valued). The stock has 4 warning signs investors should review. Among 737 Transportation companies, Aeroporto Guglielmo Marconi di Bologna SpA ranks worse than 63.91% on this metric.

As of today (2026-07-16), Aeroporto Guglielmo Marconi di Bologna SpA's current share price is €10.25. Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €5.78. Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio for today is 1.77.

The historical rank and industry rank for Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio or its related term are showing as below:

MIL:ADB' s Cyclically Adjusted PB Ratio Range Over the Past 10 Years
Min: 1.34   Med: 1.51   Max: 2.11
Current: 1.73

During the past years, Aeroporto Guglielmo Marconi di Bologna SpA's highest Cyclically Adjusted PB Ratio was 2.11. The lowest was 1.34. And the median was 1.51.

MIL:ADB's Cyclically Adjusted PB Ratio is ranked worse than
63.91% of 737 companies
in the Transportation industry
Industry Median: 1.24 vs MIL:ADB: 1.73

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.

Aeroporto Guglielmo Marconi di Bologna SpA's adjusted book value per share data for the three months ended in Mar. 2026 was €6.404. 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 €5.78 for the trailing ten years ended in Mar. 2026.

Shiller PE for Stocks: The True Measure of Stock Valuation


Aeroporto Guglielmo Marconi di Bologna SpA  (MIL:ADB) 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.


Aeroporto Guglielmo Marconi di Bologna SpA Cyclically Adjusted PB Ratio Related Terms


Aeroporto Guglielmo Marconi di Bologna SpA Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Aeroporto Guglielmo Marconi di Bologna SpA'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.

Aeroporto Guglielmo Marconi di Bologna SpA Cyclically Adjusted PB Ratio Chart

Aeroporto Guglielmo Marconi di Bologna SpA 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 0.00 0.00 0.00 1.34 1.77

Aeroporto Guglielmo Marconi di Bologna SpA 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 1.45 1.51 1.59 1.77 1.57

MIL:ADB vs JOBY, CAAP: Cyclically Adjusted PB Ratio Comparison

For the Airports & Air Services subindustry, Aeroporto Guglielmo Marconi di Bologna SpA'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.


Aeroporto Guglielmo Marconi di Bologna SpA Cyclically Adjusted PB Ratio vs Transportation Industry

For the Transportation industry and Industrials sector, Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio falls into.


MIL:ADB
73GF Score
Aeroporto Guglielmo Marconi di Bologna SpA MIL:ADB
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Aeroporto Guglielmo Marconi di Bologna SpA 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.

Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio for today is calculated as

Cyclically Adjusted PB Ratio=Share Price/ Cyclically Adjusted Book per Share
=10.25/5.78
=1.77

* 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.

Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 is calculated as:

For example, Aeroporto Guglielmo Marconi di Bologna SpA'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)
=6.404/124.5600*124.5600
=6.404

Current CPI (Mar. 2026) = 124.5600.

Aeroporto Guglielmo Marconi di Bologna SpA Quarterly Data

Book Value per Share CPI Adj_Book
201606 4.370 99.900 5.449
201609 4.542 100.100 5.652
201612 4.585 100.300 5.694
201703 4.630 101.000 5.710
201706 4.499 101.100 5.543
201709 4.685 101.200 5.766
201712 4.747 101.200 5.843
201803 4.811 101.800 5.887
201806 4.558 102.400 5.544
201809 4.756 102.600 5.774
201812 4.808 102.300 5.854
201903 4.907 102.800 5.946
201906 4.614 103.100 5.574
201909 4.849 102.900 5.870
201912 4.932 102.800 5.976
202003 4.949 102.900 5.991
202006 4.801 102.900 5.812
202009 4.708 102.300 5.732
202012 4.555 102.600 5.530
202103 4.379 103.700 5.260
202106 4.288 104.200 5.126
202109 4.348 104.900 5.163
202112 4.368 106.600 5.104
202203 4.932 110.400 5.565
202206 5.077 112.500 5.621
202209 5.278 114.200 5.757
202212 5.240 119.000 5.485
202303 5.273 118.800 5.529
202306 5.429 119.700 5.649
202309 5.646 120.300 5.846
202312 5.701 119.700 5.932
202403 5.799 120.200 6.009
202406 5.738 120.700 5.922
202409 5.980 121.200 6.146
202412 6.114 121.200 6.283
202503 6.200 122.500 6.304
202506 5.962 122.700 6.052
202509 6.190 123.100 6.263
202512 6.332 122.600 6.433
202603 6.404 124.560 6.404

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.

What does a Cyclically Adjusted PB Ratio of 1.77 mean?
Aeroporto Guglielmo Marconi di Bologna SpA (MIL:ADB) has a Cyclically Adjusted PB Ratio of 1.77 as of Jul. 16, 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 Aeroporto Guglielmo Marconi di Bologna SpA and its competitors. This is 17% above median its historical median of 1.51. Over the past decade, Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio has ranged from 1.34 to 2.11. According to the industry distribution chart, Aeroporto Guglielmo Marconi di Bologna SpA ranks #471 out of 737 companies in the Transportation industry, placing it in the top 63.9%.
Is Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio too high?
Aeroporto Guglielmo Marconi di Bologna SpA's current Cyclically Adjusted PB Ratio of 1.77 is 17% above median its 10-year median of 1.51. Over the past 10 years, this metric has ranged from a low of 1.34 to a high of 2.11. The Transportation industry median Cyclically Adjusted PB Ratio is 1.24. Aeroporto Guglielmo Marconi di Bologna SpA's value of 1.77 is 42.7% above this industry median. Based on the distribution chart, Aeroporto Guglielmo Marconi di Bologna SpA ranks #471 out of 737 companies in the Transportation industry, which is below the industry midpoint. Overall, Aeroporto Guglielmo Marconi di Bologna SpA has a GF Score™ of 73/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Aeroporto Guglielmo Marconi di Bologna SpA's Cyclically Adjusted PB Ratio compare to JOBY and CAAP?
According to the Transportation industry distribution chart, Aeroporto Guglielmo Marconi di Bologna SpA ranks #471 out of 737 companies for Cyclically Adjusted PB Ratio. This places Aeroporto Guglielmo Marconi di Bologna SpA in the lower half of its industry. The industry median Cyclically Adjusted PB Ratio is 1.24. Aeroporto Guglielmo Marconi di Bologna SpA's value of 1.77 is 42.7% above this benchmark. Historically, Aeroporto Guglielmo Marconi di Bologna SpA's own Cyclically Adjusted PB Ratio has ranged from 1.34 to 2.11 over the past decade. While the company's 10-year median is 1.51 vs. the industry median of 1.24, Aeroporto Guglielmo Marconi di Bologna SpA has consistently been above 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 1.24, based on 737 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. Aeroporto Guglielmo Marconi di Bologna SpA's current Cyclically Adjusted PB Ratio of 1.77 is 42.7% above 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 Aeroporto Guglielmo Marconi di Bologna SpA and its competitors. For the Transportation industry, the median Cyclically Adjusted PB Ratio is 1.24 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Aeroporto Guglielmo Marconi di Bologna SpA's current Cyclically Adjusted PB Ratio is 1.77, which is 17% above median its own 10-year median of 1.51. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aeroporto Guglielmo Marconi di Bologna SpA stock overvalued right now?
Based on GuruFocus' analysis, Aeroporto Guglielmo Marconi di Bologna SpA (MIL:ADB) is currently considered Fairly Valued. The stock's GF Value™ is €9.67, compared to a current price of €10.25 — trading 6% above its estimated fair value. The current Cyclically Adjusted PB Ratio is 1.77, which is 17% above median its 10-year median of 1.51 and 42.7% above the Transportation industry median of 1.24. Aeroporto Guglielmo Marconi di Bologna SpA's overall GF Score™ is 73/100 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 PB Ratio calculated?
Cyclically Adjusted PB Ratio is calculated from a company's financial statements. For Aeroporto Guglielmo Marconi di Bologna SpA (MIL:ADB), the current Cyclically Adjusted PB Ratio is 1.77 as of Jul. 16, 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 Aeroporto Guglielmo Marconi di Bologna SpA (MIL:ADB) Overvalued in 2026?

Based on GuruFocus' analysis, Aeroporto Guglielmo Marconi di Bologna SpA stock appears to be overvalued. The current stock price of €10.25 is trading 6% above its estimated GF Value™ of €9.67. GuruFocus considers Aeroporto Guglielmo Marconi di Bologna SpA to be Fairly Valued.

Key valuation signals for MIL:ADB:

  • Cyclically Adjusted PB Ratio: 1.77 (17% above median its 10-year median of 1.51)
  • GF Value™: €9.67 vs. price of €10.25 (6% above fair value)
  • GF Score™: 73/100 with 4 warning signs
  • Industry Position: 42.7% above the Transportation median (#471 of 737)

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


Aeroporto Guglielmo Marconi di Bologna SpA Business Description

Other Exchanges 0R9D:UK169:Germany
Address Via Triumvirato 84, Bologna, ITA, 40132
Aeroporto Guglielmo Marconi di Bologna SpA is engaged in the airport operations. It operates with three business units Aviation, Non-Aviation, and Other. Aviation unit is responsible for providing security services, information to the public and airport users, development of the airport infrastructure and service to passengers whereas Non-Aviation unit is concern about parking management, retail sub-concessions, advertising, passenger services and real estate management areas. The group generates revenue through Carriers, Airport Operators, Passenger Revenue, Traffic Incentives and Construction Services.
73GF Score

Get the complete analysis for MIL:ADB

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

€10.25
Price
€9.67
GF Value