FDK (STU:5FN) Cyclically Adjusted PB Ratio: (As of Aug. 20, 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:5FN FDK Corp STU:5FN
56 GF Score
Price €2.26
GF Value €2.67
! 4 Warning Signs
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What is FDK Cyclically Adjusted PB Ratio?

Note: If the price history is too short, we do not calculate current Cyclically Adjusted PB Ratio for this stock. All the historical data is shown as the company's primary share's data instead.

Shiller PE for Stocks: The True Measure of Stock Valuation


FDK  (STU:5FN) 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.


FDK Cyclically Adjusted PB Ratio Related Terms


FDK Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for FDK'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.

FDK Cyclically Adjusted PB Ratio Chart

FDK 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 3.34 3.06 2.52 1.23 1.36

FDK 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 1.10 1.14 1.04 1.36 1.39

STU:5FN vs VRT, BE: Cyclically Adjusted PB Ratio Comparison

For the Electrical Equipment & Parts subindustry, FDK'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.


FDK Cyclically Adjusted PB Ratio vs Industrial Products Industry

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

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


STU:5FN
56GF Score
FDK Corp STU:5FN
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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FDK 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.

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

For example, FDK'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)
=3.035/113.6000*113.6000
=3.035

Current CPI (Jun. 2026) = 113.6000.

FDK Quarterly Data

Book Value per Share CPI Adj_Book
201609 1.549 98.000 1.796
201612 1.951 98.400 2.252
201703 1.160 98.100 1.343
201706 1.195 98.500 1.378
201709 1.256 98.800 1.444
201712 1.440 99.400 1.646
201803 1.171 99.200 1.341
201806 1.235 99.200 1.414
201809 1.550 99.900 1.763
201812 1.915 99.700 2.182
201903 2.371 99.700 2.702
201906 2.037 99.800 2.319
201909 2.157 100.100 2.448
201912 2.161 100.500 2.443
202003 1.641 100.300 1.859
202006 1.708 99.900 1.942
202009 1.760 99.900 2.001
202012 2.101 99.300 2.404
202103 2.437 99.900 2.771
202106 2.577 99.500 2.942
202109 2.752 100.100 3.123
202112 2.961 100.100 3.360
202203 2.764 101.100 3.106
202206 2.730 101.800 3.046
202209 2.839 103.100 3.128
202212 2.686 104.100 2.931
202303 2.671 104.400 2.906
202306 2.598 105.200 2.805
202309 2.585 106.200 2.765
202312 2.571 106.800 2.735
202403 2.766 107.200 2.931
202406 0.000 108.200 0.000
202409 2.856 108.900 2.979
202412 3.033 110.700 3.112
202503 2.932 111.100 2.998
202506 2.852 111.700 2.901
202509 2.819 112.000 2.859
202512 2.809 113.000 2.824
202603 3.003 112.700 3.027
202606 3.035 113.600 3.035

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 FDK (STU:5FN) Overvalued in 2026?

Based on GuruFocus' analysis, FDK stock appears to be undervalued. The current stock price of €2.26 is trading 15.4% below its estimated GF Value™ of €2.67.

Key valuation signals for STU:5FN:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €2.67 vs. price of €2.26 (15.4% below fair value)
  • GF Score™: 56/100 with 4 warning signs

No single metric tells the full story. See the STU:5FN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


FDK Business Description

Other Exchanges 6955:Japan
Address Hamagomu Bldg, 5-36-11 Shimbashi, Minato-ku, Tokyo, JPN, 105-8677
FDK Corp is a Japan-based company, engages in the manufacture and sale of electronic-related materials and products, as well as batteries. The company offers alkaline, nickel-metal hydride, lithium, and carbon-zinc batteries; and power storage systems, Li-ion capacitors, electric lights, and production systems for batteries. It also provides switching power supplies, coil devices, DC-DC power modules, multilayer power inductors, ceramic products, toners, and signal processing modules for LCDs.
56GF Score

Get the complete analysis for STU:5FN

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

€2.26
Price
€2.67
GF Value