IQE (FRA:IQX0) Cyclically Adjusted PB Ratio: (As of Aug. 10, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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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:IQX0 IQE PLC FRA:IQX0
40 GF Score
Price €10.00
GF Value €2.38
Valuation Significantly Overvalued
! 10 Warning Signs
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What is IQE 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


IQE  (FRA:IQX0) 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.


IQE Cyclically Adjusted PB Ratio Related Terms


IQE Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for IQE'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.

IQE Cyclically Adjusted PB Ratio Chart

IQE 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 1.17 1.52 0.73 0.33 0.15

IQE Semi-Annual Data
Jun16 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
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 0.73 0.00 0.33 0.00 0.15

FRA:IQX0 vs AMAT, LRCX, KLAC: Cyclically Adjusted PB Ratio Comparison

For the Semiconductor Equipment & Materials subindustry, IQE'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.


IQE Cyclically Adjusted PB Ratio vs Semiconductors Industry

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

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


FRA:IQX0
40GF Score
IQE PLC FRA:IQX0
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

IQE 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.

IQE's Cyclically Adjusted Book per Share for the fiscal year that ended in Dec25 is calculated as:

For example, IQE's adjusted Book Value per Share data for the fiscal year that ended in Dec25 was:

Adj_Book=Book Value per Share/CPI of Dec25 (Change)*Current CPI (Dec25)
=2.621/139.9000*139.9000
=2.621

Current CPI (Dec25) = 139.9000.

IQE Annual Data

Book Value per Share CPI Adj_Book
201612 8.089 102.200 11.073
201712 10.785 105.000 14.370
201812 10.949 107.100 14.302
201912 9.874 108.500 12.732
202012 8.988 109.400 11.494
202112 8.591 114.700 10.478
202212 6.252 125.300 6.980
202312 5.124 130.500 5.493
202412 4.185 135.100 4.334
202512 2.621 139.900 2.621

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 IQE (FRA:IQX0) Overvalued in 2026?

Based on GuruFocus' analysis, IQE stock appears to be overvalued. The current stock price of €10.00 is trading 320.2% above its estimated GF Value™ of €2.38. GuruFocus considers IQE to be Significantly Overvalued.

Key valuation signals for FRA:IQX0:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €2.38 vs. price of €10.00 (320.2% above fair value)
  • GF Score™: 40/100 with 10 warning signs

No single metric tells the full story. See the FRA:IQX0 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


IQE Business Description

Address Pascal Close, Saint Mellons, Cardiff, South Glamorgan, GBR, CF3 0LW
IQE PLC is engaged in the research, design, development, manufacture, and sale of compound semiconductor materials. Its operating segments include Wireless, which manufactures and sells compound semiconductor materials for the wireless market, including radio frequency devices that enable wireless communications; Photonics, which manufactures and sells compound semiconductor materials for the photonics market, including applications that transmit or sense visible and infrared light; and CMOS++, which manufactures and sells semiconductor materials related to silicon and combines the properties of compound semiconductors with lower-cost silicon technologies. The Photonics segment generates the majority of revenue, and the Company generates the majority of its revenue from the USA.
40GF Score

Get the complete analysis for FRA:IQX0

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

€10.00
Price
€2.38
GF Value