Inogen (STU:6IO) Cyclically Adjusted PB Ratio: (As of Sep. 22, 2026)

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Director of Data and Quant Analytics at GuruFocus
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STU:6IO Inogen Inc STU:6IO
59 GF Score
Price €4.42
GF Value €5.86
Valuation Modestly Undervalued
! 3 Warning Signs
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What is Inogen Cyclically Adjusted PB Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Inogen  (STU:6IO) 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.


Inogen Cyclically Adjusted PB Ratio Related Terms


Inogen Cyclically Adjusted PB Ratio Historical Data

* Premium members only.

The historical data trend for Inogen'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.

Inogen Cyclically Adjusted PB Ratio Chart

Inogen 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 3.55 1.73 0.41 0.66 0.45

Inogen 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 0.47 0.54 0.45 0.42 0.43

STU:6IO vs OWLT, APYX, MXCT: Cyclically Adjusted PB Ratio Comparison

For the Medical Devices subindustry, Inogen'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.


Inogen Cyclically Adjusted PB Ratio vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Inogen's Cyclically Adjusted PB Ratio distribution charts can be found below:

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


STU:6IO
59GF Score
Inogen Inc STU:6IO
Cyclically Adjusted PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Inogen 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.

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

For example, Inogen'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)
=5.722/333.9520*333.9520
=5.722

Current CPI (Jun. 2026) = 333.9520.

Inogen Quarterly Data

Book Value per Share CPI Adj_Book
201609 6.861 241.428 9.490
201612 8.467 241.432 11.712
201703 8.767 243.801 12.009
201706 8.796 244.955 11.992
201709 8.977 246.819 12.146
201712 9.014 246.524 12.211
201803 9.442 249.554 12.635
201806 10.722 251.989 14.209
201809 11.662 252.439 15.428
201812 12.469 251.233 16.574
201903 13.072 254.202 17.173
201906 13.364 256.143 17.424
201909 14.308 256.759 18.610
201912 13.935 256.974 18.109
202003 14.358 258.115 18.577
202006 14.167 257.797 18.352
202009 13.592 260.280 17.439
202012 12.911 260.474 16.553
202103 13.542 264.877 17.074
202106 13.853 271.696 17.027
202109 14.845 274.310 18.073
202112 14.322 278.802 17.155
202203 14.101 287.504 16.379
202206 14.915 296.311 16.810
202209 15.625 296.808 17.580
202212 12.147 296.797 13.668
202303 11.198 301.836 12.389
202306 10.859 305.109 11.886
202309 9.346 307.789 10.140
202312 7.949 306.746 8.654
202403 7.546 312.332 8.068
202406 7.380 314.175 7.845
202409 6.975 315.301 7.388
202412 7.024 315.605 7.432
202503 6.816 319.799 7.118
202506 6.285 322.561 6.507
202509 6.181 324.800 6.355
202512 6.010 324.054 6.194
202603 5.801 330.213 5.867
202606 5.722 333.952 5.722

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 Inogen (STU:6IO) Overvalued in 2026?

Based on GuruFocus' analysis, Inogen stock appears to be undervalued. The current stock price of €4.42 is trading 24.6% below its estimated GF Value™ of €5.86. GuruFocus considers Inogen to be Modestly Undervalued.

Key valuation signals for STU:6IO:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: €5.86 vs. price of €4.42 (24.6% below fair value)
  • GF Score™: 59/100 with 3 warning signs

No single metric tells the full story. See the STU:6IO stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Inogen Business Description

Other Exchanges INGN:USA
Address 500 Cummings Center, Suite 2800, Beverly, MA, USA, 01915
Inogen Inc is a medical technology business that focuses on respiratory health. It develops, manufactures, and markets respiratory health products, including portable oxygen concentrators, or POCs, used to deliver supplemental long-term oxygen therapy to patients suffering from chronic respiratory conditions and the Simeox product for airway clearance treatment. In addition, it has started distributing the Inogen Voxi 5 stationary oxygen concentrator as well as the Aurora continuous positive airway pressure, or CPAP, masks in the United States. The company derives revenues from customers through the development, manufacturing, marketing, sales, and rental of respiratory products.
59GF Score

Get the complete analysis for STU:6IO

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

€4.42
Price
€5.86
GF Value