Rohm Co (STU:ROM) Cyclically Adjusted PB Ratio: (As of Aug. 08, 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:ROM Rohm Co Ltd STU:ROM
65 GF Score
Price €25.26
GF Value €12.46
Valuation Significantly Overvalued
! 5 Warning Signs
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What is Rohm Co Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Rohm Co  (STU:ROM) 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.


Rohm Co Cyclically Adjusted PB Ratio Related Terms


Rohm Co Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Rohm Co'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.

Rohm Co Cyclically Adjusted PB Ratio Chart

Rohm Co Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Cyclically Adjusted PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.34 1.43 1.18 0.66 1.36

Rohm Co 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 0.84 1.00 0.99 1.36 2.38

STU:ROM vs NVDA, AVGO, MU: Cyclically Adjusted PB Ratio Comparison

For the Semiconductors subindustry, Rohm Co'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.


Rohm Co Cyclically Adjusted PB Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Rohm Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:ROM
65GF Score
Rohm Co Ltd STU:ROM
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Rohm Co 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.

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

For example, Rohm Co'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)
=9.235/113.6000*113.6000
=9.235

Current CPI (Jun. 2026) = 113.6000.

Rohm Co Quarterly Data

Book Value per Share CPI Adj_Book
201609 14.317 98.000 16.596
201612 14.367 98.400 16.586
201703 14.188 98.100 16.430
201706 13.859 98.500 15.984
201709 13.477 98.800 15.496
201712 13.494 99.400 15.422
201803 13.582 99.200 15.554
201806 13.874 99.200 15.888
201809 14.098 99.900 16.031
201812 14.179 99.700 16.156
201903 14.596 99.700 16.631
201906 14.841 99.800 16.893
201909 15.421 100.100 17.501
201912 15.170 100.500 17.147
202003 15.101 100.300 17.103
202006 16.199 99.900 18.420
202009 15.979 99.900 18.170
202012 15.955 99.300 18.253
202103 15.138 99.900 17.214
202106 14.795 99.500 16.892
202109 15.582 100.100 17.683
202112 16.149 100.100 18.327
202203 16.382 101.100 18.407
202206 15.780 101.800 17.609
202209 16.360 103.100 18.026
202212 15.935 104.100 17.389
202303 16.285 104.400 17.720
202306 15.897 105.200 17.166
202309 15.678 106.200 16.770
202312 15.498 106.800 16.485
202403 15.394 107.200 16.313
202406 0.000 108.200 0.000
202409 15.483 108.900 16.151
202412 15.514 110.700 15.920
202503 14.294 111.100 14.616
202506 13.702 111.700 13.935
202509 13.490 112.000 13.683
202512 13.132 113.000 13.202
202603 10.703 112.700 10.788
202606 9.235 113.600 9.235

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 Rohm Co (STU:ROM) Overvalued in 2026?

Based on GuruFocus' analysis, Rohm Co stock appears to be overvalued. The current stock price of €25.26 is trading 102.7% above its estimated GF Value™ of €12.46. GuruFocus considers Rohm Co to be Significantly Overvalued.

Key valuation signals for STU:ROM:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €12.46 vs. price of €25.26 (102.7% above fair value)
  • GF Score™: 65/100 with 5 warning signs

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


Rohm Co Business Description

Address 21 Nishiin Mizozakicho, Ukyo-ku, Kyoto, JPN, 615-8585
Rohm Co Ltd is a Japan-based company that manufactures and distributes electronic components for use in automotive, transportation, medical, healthcare, audiovisual, telecommunications, digital power, computer and peripherals, and home appliance end markets. The group operates through three reportable segments: LSI, Semiconductor Elements, and Modules. The LSI segment produces analog, logic, and memory LSIs; the Semiconductor Elements segment includes transistors, diodes, power devices, light-emitting diodes, and semiconductor lasers; and the Module segment produces print heads and optical modules.
65GF Score

Get the complete analysis for STU:ROM

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

€25.26
Price
€12.46
GF Value