Blue Bird (STU:4RB) Cyclically Adjusted PB Ratio: (As of Jul. 29, 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.

STU:4RB Blue Bird Corp STU:4RB
83 GF Score
Price €64.66
GF Value €45.21
Valuation Significantly Overvalued
! 4 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  (STU: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
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 0.00 0.00 0.00 0.00

STU:4RB vs ALG, ASTE, LNN: 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.


STU:4RB
83GF Score
Blue Bird Corp STU: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 Mar. 2026 is calculated as:

For example, Blue Bird'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)
=8.143/330.2130*330.2130
=8.143

Current CPI (Mar. 2026) = 330.2130.

Blue Bird Quarterly Data

Book Value per Share CPI Adj_Book
201606 -6.184 241.018 -8.473
201609 -5.420 241.428 -7.413
201612 -5.947 241.432 -8.134
201703 -5.248 243.801 -7.108
201706 -4.112 244.955 -5.543
201709 -3.482 246.819 -4.658
201712 -3.721 246.524 -4.984
201803 -3.729 249.554 -4.934
201806 -1.711 251.989 -2.242
201809 -1.183 252.439 -1.547
201812 -2.659 251.233 -3.495
201903 -2.597 254.202 -3.374
201906 -2.046 256.143 -2.638
201909 -2.326 256.759 -2.991
201912 -2.303 256.974 -2.959
202003 -2.179 258.115 -2.788
202006 -2.033 257.797 -2.604
202009 -1.671 260.280 -2.120
202012 -1.645 260.474 -2.085
202103 -1.627 264.877 -2.028
202106 -1.428 271.696 -1.736
202109 -1.020 274.310 -1.228
202112 1.065 278.802 1.261
202203 0.783 287.504 0.899
202206 0.650 296.311 0.724
202209 0.044 296.808 0.049
202212 -0.271 296.797 -0.302
202303 -0.033 301.836 -0.036
202306 0.300 305.109 0.325
202309 1.165 307.789 1.250
202312 2.152 306.746 2.317
202403 3.013 312.332 3.185
202406 3.945 314.175 4.146
202409 4.455 315.301 4.666
202412 5.345 315.605 5.592
202503 5.560 319.799 5.741
202506 6.110 322.561 6.255
202509 6.825 324.800 6.939
202512 7.315 324.054 7.454
202603 8.143 330.213 8.143

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 (STU:4RB) Overvalued in 2026?

Based on GuruFocus' analysis, Blue Bird stock appears to be overvalued. The current stock price of €64.66 is trading 43% above its estimated GF Value™ of €45.21. GuruFocus considers Blue Bird to be Significantly Overvalued.

Key valuation signals for STU:4RB:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €45.21 vs. price of €64.66 (43% above fair value)
  • GF Score™: 83/100 with 4 warning signs

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


Blue Bird Business Description

Other Exchanges BLBD:USA4RB:Germany
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.
83GF Score

Get the complete analysis for STU:4RB

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

€64.66
Price
€45.21
GF Value