Applied Optoelectronics (FRA:A59) 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.

FRA:A59 Applied Optoelectronics Inc FRA:A59
46 GF Score
Price €120.90
GF Value €18.21
Valuation Significantly Overvalued
! 7 Warning Signs
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What is Applied Optoelectronics Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Applied Optoelectronics  (FRA:A59) 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.


Applied Optoelectronics Cyclically Adjusted PB Ratio Related Terms


Applied Optoelectronics Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Applied Optoelectronics'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.

Applied Optoelectronics Cyclically Adjusted PB Ratio Chart

Applied Optoelectronics 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 0.00 0.12 1.46 2.81 2.68

Applied Optoelectronics 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 1.95 1.97 2.68 6.37 0.00

FRA:A59 vs VIAV, VSAT, ONDS: Cyclically Adjusted PB Ratio Comparison

For the Communication Equipment subindustry, Applied Optoelectronics'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.


Applied Optoelectronics Cyclically Adjusted PB Ratio vs Hardware Industry

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

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


FRA:A59
46GF Score
Applied Optoelectronics Inc FRA:A59
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Applied Optoelectronics 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.

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

For example, Applied Optoelectronics'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)
=17.75/333.9520*333.9520
=17.750

Current CPI (Jun. 2026) = 333.9520.

Applied Optoelectronics Quarterly Data

Book Value per Share CPI Adj_Book
201609 9.719 241.428 13.444
201612 11.715 241.432 16.204
201703 13.602 243.801 18.632
201706 14.260 244.955 19.441
201709 14.061 246.819 19.025
201712 14.478 246.524 19.613
201803 14.250 249.554 19.069
201806 14.938 251.989 19.797
201809 14.552 252.439 19.251
201812 14.602 251.233 19.410
201903 14.401 254.202 18.919
201906 13.827 256.143 18.027
201909 13.682 256.759 17.795
201912 12.235 256.974 15.900
202003 11.509 258.115 14.890
202006 10.420 257.797 13.498
202009 9.836 260.280 12.620
202012 9.097 260.474 11.663
202103 8.732 264.877 11.009
202106 8.550 271.696 10.509
202109 8.257 274.310 10.052
202112 8.246 278.802 9.877
202203 7.902 287.504 9.179
202206 7.511 296.311 8.465
202209 7.030 296.808 7.910
202212 6.091 296.797 6.854
202303 5.546 301.836 6.136
202306 4.741 305.109 5.189
202309 4.877 307.789 5.292
202312 5.165 306.746 5.623
202403 4.649 312.332 4.971
202406 4.263 314.175 4.531
202409 4.260 315.301 4.512
202412 4.430 315.605 4.688
202503 5.372 319.799 5.610
202506 5.953 322.561 6.163
202509 6.998 324.800 7.195
202512 8.357 324.054 8.612
202603 12.114 330.213 12.251
202606 17.750 333.952 17.750

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 Applied Optoelectronics (FRA:A59) Overvalued in 2026?

Based on GuruFocus' analysis, Applied Optoelectronics stock appears to be overvalued. The current stock price of €120.90 is trading 563.9% above its estimated GF Value™ of €18.21. GuruFocus considers Applied Optoelectronics to be Significantly Overvalued.

Key valuation signals for FRA:A59:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €18.21 vs. price of €120.90 (563.9% above fair value)
  • GF Score™: 46/100 with 7 warning signs

No single metric tells the full story. See the FRA:A59 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Applied Optoelectronics Business Description

Other Exchanges AAOI:USA1AAOI:Italy0HGV:UK
Address 13139 Jess Pirtle Boulevard, Sugar Land, TX, USA, 77478
Applied Optoelectronics Inc is a provider of fiber-optic networking products, for four networking end-markets; internet data center, CATV, telecom, and FTTH. The Company designs and manufactures a wide range of optical communications products at varying levels of integration, from components, subassemblies, and modules to meet turn-key equipment. Through direct sales personnel, and manufacturing teams in the United States, China, and Taiwan, the company coordinates with customers to determine product design, qualifications, and performance. The Company has manufacturing and research and development facilities located in the U.S., Taiwan, and China.
46GF Score

Get the complete analysis for FRA:A59

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

€120.90
Price
€18.21
GF Value