Blue Bird (FRA:4RB) Cyclically Adjusted PB Ratio: (As of Sep. 15, 2026)

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.

FRA:4RB Blue Bird Corp FRA:4RB
86 GF Score
Price €53.66
GF Value €45.53
Valuation Modestly Overvalued
! 2 Warning Signs
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What is Blue Bird Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Blue Bird  (FRA:4RB) 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.


Blue Bird Cyclically Adjusted PB Ratio Related Terms


Blue Bird Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Blue Bird'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.

Blue Bird Cyclically Adjusted PB Ratio Chart

Blue Bird Annual Data
Trend Sep16 Sep17 Sep18 Sep19 Sep20 Sep21 Sep22 Sep23 Sep24 Sep25
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Blue Bird Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 0.00 0.00 0.00 0.00

FRA:4RB vs ALG, LNN, ASTE: Cyclically Adjusted PB Ratio Comparison

For the Farm & Heavy Construction Machinery subindustry, Blue Bird'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.


Blue Bird Cyclically Adjusted PB Ratio vs Farm & Heavy Construction Machinery Industry

For the Farm & Heavy Construction Machinery industry and Industrials sector, Blue Bird's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


FRA:4RB
86GF Score
Blue Bird Corp FRA:4RB
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Blue Bird 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.

Blue Bird's Cyclically Adjusted Book per Share for the quarter that ended in Jun. 2026 is calculated as:

For example, Blue Bird'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)
=18.083/333.9520*333.9520
=18.083

Current CPI (Jun. 2026) = 333.9520.

Blue Bird Quarterly Data

Book Value per Share CPI Adj_Book
201609 -5.413 241.428 -7.487
201612 -5.948 241.432 -8.227
201703 -5.248 243.801 -7.189
201706 -4.051 244.955 -5.523
201709 -3.510 246.819 -4.749
201712 -3.667 246.524 -4.967
201803 -3.739 249.554 -5.004
201806 -1.712 251.989 -2.269
201809 -1.189 252.439 -1.573
201812 -2.646 251.233 -3.517
201903 -2.613 254.202 -3.433
201906 -2.031 256.143 -2.648
201909 -2.349 256.759 -3.055
201912 -2.280 256.974 -2.963
202003 -2.194 258.115 -2.839
202006 -2.038 257.797 -2.640
202009 -1.678 260.280 -2.153
202012 -1.636 260.474 -2.098
202103 -1.648 264.877 -2.078
202106 -1.451 271.696 -1.783
202109 -1.036 274.310 -1.261
202112 1.058 278.802 1.267
202203 0.775 287.504 0.900
202206 0.657 296.311 0.740
202209 0.044 296.808 0.050
202212 -0.269 296.797 -0.303
202303 -0.032 301.836 -0.035
202306 0.298 305.109 0.326
202309 1.175 307.789 1.275
202312 2.125 306.746 2.313
202403 3.033 312.332 3.243
202406 3.962 314.175 4.211
202409 4.431 315.301 4.693
202412 5.404 315.605 5.718
202503 5.565 319.799 5.811
202506 6.003 322.561 6.215
202509 6.818 324.800 7.010
202512 7.294 324.054 7.517
202603 8.171 330.213 8.264
202606 18.083 333.952 18.083

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.

Is Blue Bird (FRA:4RB) Overvalued in 2026?

Based on GuruFocus' analysis, Blue Bird stock appears to be overvalued. The current stock price of €53.66 is trading 17.9% above its estimated GF Value™ of €45.53. GuruFocus considers Blue Bird to be Modestly Overvalued.

Key valuation signals for FRA:4RB:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €45.53 vs. price of €53.66 (17.9% above fair value)
  • GF Score™: 86/100 with 2 warning signs

No single metric tells the full story. See the FRA:4RB stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Blue Bird Business Description

Other Exchanges BLBD:USA
Address 3920 Arkwright Road, 2nd Floor, Macon, GA, USA, 31210
Blue Bird Corp is an American bus manufacturing company. It is an independent designer and manufacturer of school buses. The company operates in two segments; the Bus segment which involves the design, engineering, manufacture, and sales of school buses and extended warranties; and the Parts segment which includes the sales of replacement bus parts. Geographically, the company generates a majority of its revenue from its customers in the United States and the rest from Canada and Rest of the world.
86GF Score

Get the complete analysis for FRA:4RB

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

€53.66
Price
€45.53
GF Value