Diodes (FRA:DDQ) 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.
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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.

FRA:DDQ Diodes Inc FRA:DDQ
80 GF Score
Price €89.00
GF Value €51.30
Valuation Significantly Overvalued
! 5 Warning Signs
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What is Diodes Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Diodes  (FRA:DDQ) 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.


Diodes Cyclically Adjusted PB Ratio Related Terms


Diodes Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Diodes'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.

Diodes Cyclically Adjusted PB Ratio Chart

Diodes 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 5.42 3.34 3.18 2.22 1.63

Diodes 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 1.81 1.78 1.63 2.18 3.40

FRA:DDQ vs LASR, PI, SYNA: Cyclically Adjusted PB Ratio Comparison

For the Semiconductors subindustry, Diodes'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.


Diodes Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


FRA:DDQ
80GF Score
Diodes Inc FRA:DDQ
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Diodes 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.

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

For example, Diodes'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)
=36.485/333.9520*333.9520
=36.485

Current CPI (Jun. 2026) = 333.9520.

Diodes Quarterly Data

Book Value per Share CPI Adj_Book
201609 14.576 241.428 20.162
201612 15.257 241.432 21.104
201703 15.456 243.801 21.171
201706 15.093 244.955 20.577
201709 14.582 246.819 19.730
201712 14.301 246.524 19.373
201803 14.210 249.554 19.016
201806 15.154 251.989 20.083
201809 15.498 252.439 20.502
201812 16.303 251.233 21.671
201903 16.943 254.202 22.258
201906 17.509 256.143 22.828
201909 18.331 256.759 23.842
201912 19.446 256.974 25.271
202003 19.789 258.115 25.603
202006 19.677 257.797 25.490
202009 19.590 260.280 25.135
202012 17.894 260.474 22.942
202103 18.882 264.877 23.806
202106 20.088 271.696 24.691
202109 21.829 274.310 26.575
202112 24.323 278.802 29.134
202203 26.046 287.504 30.254
202206 28.268 296.311 31.859
202209 31.008 296.808 34.888
202212 31.425 296.797 35.359
202303 32.603 301.836 36.072
202306 33.541 305.109 36.712
202309 34.466 307.789 37.396
202312 34.748 306.746 37.830
202403 34.885 312.332 37.300
202406 35.721 314.175 37.970
202409 35.230 315.301 37.314
202412 37.004 315.605 39.155
202503 35.912 319.799 37.501
202506 35.218 322.561 36.462
202509 34.701 324.800 35.679
202512 34.962 324.054 36.030
202603 35.575 330.213 35.978
202606 36.485 333.952 36.485

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 Diodes (FRA:DDQ) Overvalued in 2026?

Based on GuruFocus' analysis, Diodes stock appears to be overvalued. The current stock price of €89.00 is trading 73.5% above its estimated GF Value™ of €51.30. GuruFocus considers Diodes to be Significantly Overvalued.

Key valuation signals for FRA:DDQ:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €51.30 vs. price of €89.00 (73.5% above fair value)
  • GF Score™: 80/100 with 5 warning signs

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


Diodes Business Description

Other Exchanges DIOD:USADDQ:Germany
Address 4949 Hedgcoxe Road, Suite 200, Plano, TX, USA, 75024
Diodes Inc is a manufacturer and supplier of high-quality application-specific products within the broad discrete, logic, analog, and mixed-signal semiconductor markets. It serves the customer electronics, computing, communications, industrial, and automotive markets. The Company's products include diodes; rectifiers; transistors; MOSFETs; GPP bridges; GPP rectifiers; protection devices; function-specific arrays; single gate logic; amplifiers and comparators; Hall-effect and temperature sensors; and power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, voltage references along with special-function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers.
80GF Score

Get the complete analysis for FRA:DDQ

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

€89.00
Price
€51.30
GF Value