INGN (Inogen) Cyclically Adjusted PB Ratio: (As of Sep. 21, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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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.

INGN Inogen Inc INGN
63 GF Score
Price $5.10
GF Value $6.72
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  (NAS:INGN) 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 3.61 1.65 0.40 0.66 0.48

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 0.49 0.57 0.47 0.43 0.44

INGN 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.


INGN
63GF Score
Inogen Inc INGN
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)
=6.542/333.9520*333.9520
=6.542

Current CPI (Jun. 2026) = 333.9520.

Inogen Quarterly Data

Book Value per Share CPI Adj_Book
201609 7.710 241.428 10.665
201612 8.930 241.432 12.352
201703 9.377 243.801 12.844
201706 10.033 244.955 13.678
201709 10.612 246.819 14.358
201712 10.824 246.524 14.663
201803 11.612 249.554 15.539
201806 12.518 251.989 16.590
201809 13.545 252.439 17.919
201812 14.254 251.233 18.947
201903 14.677 254.202 19.282
201906 15.219 256.143 19.842
201909 15.599 256.759 20.289
201912 15.642 256.974 20.328
202003 15.754 258.115 20.383
202006 15.912 257.797 20.613
202009 15.938 260.280 20.449
202012 15.798 260.474 20.255
202103 15.916 264.877 20.067
202106 16.428 271.696 20.192
202109 17.205 274.310 20.946
202112 16.287 278.802 19.509
202203 15.689 287.504 18.224
202206 15.593 296.311 17.574
202209 15.307 296.808 17.223
202212 12.964 296.797 14.587
202303 12.166 301.836 13.460
202306 11.847 305.109 12.967
202309 9.895 307.789 10.736
202312 8.781 306.746 9.560
202403 8.150 312.332 8.714
202406 7.909 314.175 8.407
202409 7.784 315.301 8.244
202412 7.274 315.605 7.697
202503 7.362 319.799 7.688
202506 7.378 322.561 7.639
202509 7.263 324.800 7.468
202512 7.059 324.054 7.275
202603 6.684 330.213 6.760
202606 6.542 333.952 6.542

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 (INGN) Overvalued in 2026?

Based on GuruFocus' analysis, Inogen stock appears to be undervalued. The current stock price of $5.10 is trading 24.1% below its estimated GF Value™ of $6.72. GuruFocus considers Inogen to be Modestly Undervalued.

Key valuation signals for INGN:

  • Cyclically Adjusted PB Ratio:
  • GF Value™: $6.72 vs. price of $5.10 (24.1% below fair value)
  • GF Score™: 63/100 with 3 warning signs

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


Inogen Business Description

Other Exchanges 6IO:Germany
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.
63GF Score

Get the complete analysis for INGN

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

$5.10
Price
$6.72
GF Value