Magna International (STU:MGA) 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.

STU:MGA Magna International Inc STU:MGA
79 GF Score
Price €55.02
GF Value €43.06
Valuation Modestly Overvalued
! 8 Warning Signs
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What is Magna International Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Magna International  (STU:MGA) 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.


Magna International Cyclically Adjusted PB Ratio Related Terms


Magna International Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Magna International'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.

Magna International Cyclically Adjusted PB Ratio Chart

Magna International 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 2.56 1.72 1.58 1.10 1.18

Magna International 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 0.88 1.07 1.20 1.25 1.47

STU:MGA vs ORLY, AZO, GPC: Cyclically Adjusted PB Ratio Comparison

For the Auto Parts subindustry, Magna International'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.


Magna International Cyclically Adjusted PB Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Magna International's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:MGA
79GF Score
Magna International Inc STU:MGA
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Magna International 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.

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

For example, Magna International'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)
=39.587/133.5265*133.5265
=39.587

Current CPI (Jun. 2026) = 133.5265.

Magna International Quarterly Data

Book Value per Share CPI Adj_Book
201609 23.778 101.765 31.199
201612 25.346 101.449 33.360
201703 26.577 102.634 34.577
201706 26.430 103.029 34.254
201709 26.695 103.345 34.491
201712 27.240 103.345 35.195
201803 28.048 105.004 35.667
201806 28.840 105.557 36.482
201809 29.406 105.636 37.170
201812 29.821 105.399 37.779
201903 33.038 106.979 41.237
201906 33.444 107.690 41.468
201909 32.426 107.611 40.235
201912 32.700 107.769 40.515
202003 32.185 107.927 39.819
202006 29.675 108.401 36.553
202009 29.689 108.164 36.650
202012 31.873 108.559 39.203
202103 34.112 110.298 41.296
202106 34.890 111.720 41.700
202109 34.912 112.905 41.289
202112 36.090 113.774 42.356
202203 37.014 117.646 42.011
202206 37.551 120.806 41.505
202209 38.724 120.648 42.858
202212 37.144 120.964 41.002
202303 36.962 122.702 40.223
202306 37.335 124.203 40.138
202309 38.762 125.230 41.330
202312 38.785 125.072 41.407
202403 38.432 126.258 40.645
202406 39.001 127.522 40.837
202409 39.562 127.285 41.502
202412 40.762 127.364 42.734
202503 39.976 129.181 41.321
202506 39.009 129.892 40.101
202509 39.063 130.287 40.034
202512 39.009 130.366 39.955
202603 38.812 132.262 39.183
202606 39.587 133.527 39.587

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 Magna International (STU:MGA) Overvalued in 2026?

Based on GuruFocus' analysis, Magna International stock appears to be overvalued. The current stock price of €55.02 is trading 27.8% above its estimated GF Value™ of €43.06. GuruFocus considers Magna International to be Modestly Overvalued.

Key valuation signals for STU:MGA:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €43.06 vs. price of €55.02 (27.8% above fair value)
  • GF Score™: 79/100 with 8 warning signs

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


Magna International Business Description

Other Exchanges MGA:USAMG:Canada
Address 337 Magna Drive, Aurora, ON, CAN, L4G 7K1
Magna International prides itself on an entrepreneurial culture and a corporate constitution that outlines the distribution of profits to various stakeholders. This automotive supplier's product groups include exteriors, interiors, seating, roof systems, body and chassis, powertrain, vision and electronic systems, closure systems, electric vehicle systems, tooling and engineering, and contract vehicle assembly. In 2025, 48.6% of Magna's USD 42 billion of revenue came from North America, while Europe accounted for approximately 38% and Asia the remainder. The firm's top six customers constituted 75.9% of revenue, with the top three being GM, Mercedes, and Ford. GM was the largest contributor at 15.6%. Magna was founded in 1957, has about 144,000 employees, and is based in Aurora, Ontario.
79GF Score

Get the complete analysis for STU:MGA

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

€55.02
Price
€43.06
GF Value