AECOM (MEX:ACM) Cyclically Adjusted PB Ratio: (As of Sep. 21, 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.
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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.

MEX:ACM AECOM MEX:ACM
47 GF Score
Price MXN1,100.47
GF Value MXN1,801.95
Valuation Significantly Undervalued
! 3 Warning Signs
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What is AECOM Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


AECOM  (MEX:ACM) 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.


AECOM Cyclically Adjusted PB Ratio Related Terms


AECOM Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for AECOM'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.

AECOM Cyclically Adjusted PB Ratio Chart

AECOM 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 - - - 2.94 4.68

AECOM 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 2.89 4.58 4.64 3.34 2.39

MEX:ACM vs DY, TTEK, ACA: Cyclically Adjusted PB Ratio Comparison

For the Engineering & Construction subindustry, AECOM'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.


AECOM Cyclically Adjusted PB Ratio vs Construction Industry

For the Construction industry and Industrials sector, AECOM's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


MEX:ACM
47GF Score
AECOM MEX:ACM
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

AECOM 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.

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

For example, AECOM'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)
=325.781/333.9520*333.9520
=325.781

Current CPI (Jun. 2026) = 333.9520.

AECOM Quarterly Data

Book Value per Share CPI Adj_Book
201609 446.734 241.428 617.939
201612 472.717 241.432 653.869
201703 451.473 243.801 618.415
201706 454.450 244.955 619.561
201709 485.849 246.819 657.365
201712 532.474 246.524 721.312
201803 485.806 249.554 650.103
201806 521.091 251.989 690.583
201809 509.623 252.439 674.181
201812 533.276 251.233 708.858
201903 541.822 254.202 711.806
201906 547.986 256.143 714.449
201909 488.870 256.759 635.846
201912 460.712 256.974 598.721
202003 541.133 258.115 700.124
202006 560.445 257.797 726.004
202009 479.841 260.280 615.660
202012 405.034 260.474 519.291
202103 408.050 264.877 514.462
202106 387.137 271.696 475.845
202109 406.040 274.310 494.323
202112 380.273 278.802 455.495
202203 375.433 287.504 436.086
202206 372.622 296.311 419.957
202209 377.069 296.808 424.257
202212 377.660 296.797 424.938
202303 356.225 301.836 394.128
202306 324.726 305.109 355.423
202309 304.126 307.789 329.978
202312 302.317 306.746 329.130
202403 292.910 312.332 313.186
202406 336.689 314.175 357.883
202409 350.539 315.301 371.274
202412 376.159 315.605 398.026
202503 382.184 319.799 399.098
202506 385.299 322.561 398.906
202509 375.071 324.800 385.640
202512 340.125 324.054 350.514
202603 348.360 330.213 352.304
202606 325.781 333.952 325.781

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 AECOM (MEX:ACM) Overvalued in 2026?

Based on GuruFocus' analysis, AECOM stock appears to be undervalued. The current stock price of MXN1,100.47 is trading 38.9% below its estimated GF Value™ of MXN1,801.95. GuruFocus considers AECOM to be Significantly Undervalued.

Key valuation signals for MEX:ACM:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: MXN1,801.95 vs. price of MXN1,100.47 (38.9% below fair value)
  • GF Score™: 47/100 with 3 warning signs

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


AECOM Business Description

Other Exchanges ACM:USA0H9N:UKE6Z:Germany
Address 13355 Noel Road, Suite 400, Dallas, TX, USA, 75240
Aecom is one of the largest global providers of advisory, design, and engineering services. It serves a broad spectrum of end markets, including water, transportation, and environment. Based in Dallas, Aecom employs 51,000 people. The company generated $16.1 billion in sales in fiscal 2025.
47GF Score

Get the complete analysis for MEX:ACM

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

MXN1,100.47
Price
MXN1,801.95
GF Value