INGN (Inogen) GF Value Rank: 9 (As of Aug. 06, 2026) — 125% Above Median

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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.

INGN Inogen Inc INGN
66 GF Score
Price $6.55
GF Value $6.94
Valuation Fairly Valued
! 3 Warning Signs
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What is Inogen GF Value Rank?

Inogen INGN -5.13% 66 GF Value Rank is 9 as of Aug. 06, 2026, which is 125% above its 10-year median of 4.00. GuruFocus rates INGN with a GF Score™ of 66/100 and a GF Value™ of $6.94 (Fairly Valued). The stock has 3 warning signs investors should review.

Inogen has the GF Value Rank of 9.

GF Value Rank evaluates the exclusive GuruFocus valuation and performance of a stock, rated on a scale from 1 to 10. It is determined by the price-to-GF-Value (P/GF Value) ratio, a proprietary metric calculated based on historical multiples along with an adjustment factor based on a company's past returns and growth and future estimates of the business' performance.

GuruFocus found that for valuation, we cannot simply give stocks a better GF Value rank simply because they have a lower P/GF Value ratio. Backtesting shows that over the long term, the two worst-performing groups are the most expensive group (with the highest P/GF Value ratio) and the least expensive group (with the lowest P/GF Value ratio).

We can understand why the most expensive group underperforms. We were initially puzzled by the underperformance of the least expensive group, but we realized there is a reason why some stocks are super cheap. If they look too undervalued, it is often because the businesses behind them are poor quality. The market realized this and gave them low valuations. In a way, the market is efficient.

After multiple backtesting analyses, we granted the stocks in third-cheapest percentile the highest GF Value rank, as they have performed the best over a full market cycle. Stock performance is actually not as sensitive to valuation as it is to growth and profitability. On average, the companies in the 20%-50% valuation groups have similar performances. Therefore, we should avoid the most expensive and the least expensive stocks. We can be more tolerant of valuation.

A higher score indicates a stock with a relatively low valuation and substantial potential for outperformance. Conversely, a lower score often reflects stocks that are either highly overvalued or deeply undervalued, both of which tend to underperform.

Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.

INGN vs QSI, APYX, QTRX: GF Value Rank Comparison

For the Medical Devices subindustry, Inogen's GF Value Rank, along with its competitors' market caps and GF Value Rank 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 GF Value Rank vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Inogen's GF Value Rank distribution charts can be found below:

* The bar in red indicates where Inogen's GF Value Rank falls into.


INGN
66GF Score
Inogen Inc INGN
GF Value Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about GF Value Rank →
What does a GF Value Rank of 9 mean?
Inogen (INGN) has a GF Value Rank of 9 as of Aug. 06, 2026. GF Value Rank is given based on historical multiples along with past returns, growth and future estimates of the business' performance. View historical data on Inogen and its competitors. This is 125% above median its historical median of 4.00. Over the past decade, Inogen's GF Value Rank has ranged from 1.00 to 10.00.
Is Inogen's GF Value Rank too high?
Inogen's current GF Value Rank of 9 is 125% above median its 10-year median of 4.00. Over the past 10 years, this metric has ranged from a low of 1.00 to a high of 10.00. Overall, Inogen has a GF Score™ of 66/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Inogen's GF Value Rank compare to QSI and APYX?
Inogen's GF Value Rank of 9 can be compared against companies in the Medical Devices & Instruments industry. Historically, Inogen's own GF Value Rank has ranged from 1.00 to 10.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Value Rank for a Medical Devices & Instruments company?
A good GF Value Rank depends on the Medical Devices & Instruments industry context. However, GF Value Rank should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high GF Value Rank mean?
A high GF Value Rank can signal that a stock is expensive relative to its fundamentals. GF Value Rank is given based on historical multiples along with past returns, growth and future estimates of the business' performance. View historical data on Inogen and its competitors. Inogen's current GF Value Rank is 9, which is 125% above median its own 10-year median of 4.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Inogen stock overvalued right now?
Based on GuruFocus' analysis, Inogen (INGN) is currently considered Fairly Valued. The stock's GF Value™ is $6.94, compared to a current price of $6.55 — trading 5.7% below its estimated fair value. The current GF Value Rank is 9, which is 125% above median its 10-year median of 4.00. Inogen's overall GF Score™ is 66/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is GF Value Rank calculated?
GF Value Rank is calculated from a company's financial statements. For Inogen (INGN), the current GF Value Rank is 9 as of Aug. 06, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Inogen (INGN) Overvalued in 2026?

Based on GuruFocus' analysis, Inogen stock appears to be undervalued. The current stock price of $6.55 is trading 5.7% below its estimated GF Value™ of $6.94. GuruFocus considers Inogen to be Fairly Valued.

Key valuation signals for INGN:

  • GF Value Rank: 9 (125% above median its 10-year median of 4.00)
  • GF Value™: $6.94 vs. price of $6.55 (5.7% below fair value)
  • GF Score™: 66/100 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.
66GF Score

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

$6.55
Price
$6.94
GF Value