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PulmonxLUNG +12.04%57 Net-Net Working Capital is $-0.05 as of Jun. 2026. GuruFocus rates LUNG with a GF Score™ of 57/100 and a GF Value™ of $6.46 (Possible Value Trap). The stock has 7 warning signs investors should review. Among 419 Medical Devices & Instruments companies, Pulmonx ranks worse than 238663.25% on this metric.
In calculating the Net-Net Working Capital (NNWC), Benjamin Graham assumed that a company's accounts receivable is only worth 75% its value, its inventory is only worth 50% of its value, but its liabilities have to be paid in full. In addition, Graham believed that preferred stock belongs on the liability side of the balance sheet, not as part of capital and surplus. This is a conservative way of estimating the company's value.
Pulmonx's Net-Net Working Capital for the quarter that ended in Jun. 2026 was $-0.05.
The industry rank for Pulmonx's Net-Net Working Capital or its related term are showing as below:
LUNG's Price-to-Net-Net-Working-Capital is not ranked *
in the Medical Devices & Instruments industry.
Industry Median: 6.88 * Ranked among companies with meaningful Price-to-Net-Net-Working-Capital only.
Pulmonx (NAS:LUNG) Net-Net Working Capital Explanation
One research study, covering the years 1970 through 1983 showed that portfolios picked at the beginning of each year, and held for one year, returned 29.4 percent, on average, over the 13-year period, compared to 11.5 percent for the S&P 500 Index. Other studies of Graham's strategy produced similar results.
Benjamin Graham looked for companies whose market values were less than two-thirds of their net-net value. They are collected under our Net-Net screener.
Pulmonx Net-Net Working Capital Related Terms
Pulmonx Net-Net Working Capital Historical Data
* Premium members only.
The historical data trend for Pulmonx's Net-Net Working Capital 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.
LUNG vs SRTS, SNWV, COCH: Net-Net Working Capital Comparison
For the Medical Devices subindustry, Pulmonx's Price-to-Net-Net-Working-Capital, along with its competitors' market caps and Price-to-Net-Net-Working-Capital 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.
Pulmonx Price-to-Net-Net-Working-Capital vs Medical Devices & Instruments Industry
For the Medical Devices & Instruments industry and Healthcare sector, Pulmonx's Price-to-Net-Net-Working-Capital distribution charts can be found below:
* The bar in red indicates where Pulmonx's Price-to-Net-Net-Working-Capital falls into.
* 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.
In calculating the Net-Net Working Capital (NNWC), Benjamin Graham assumed that a company's accounts receivable is only worth 75% its value, its inventory is only worth 50% of its value, but its liabilities have to be paid in full.
In addition, Graham believed that preferred stock belongs on the liability side of the balance sheet, not as part of capital and surplus. In "Security Analysis", preferred stock is dubbed "an imperfect creditorship position" that is best placed on the balance sheet alongside funded debt.
This is a conservative way of estimating the company's value.
What does a Net-Net Working Capital of $-0.05 mean?
Pulmonx (LUNG) has a Net-Net Working Capital of $-0.05 as of Jun. 2026. Ben Graham defined net-net working capital as the per-share sum of cash, 75% of receivables and 50% of inventory less total liabilities. View historical data on Pulmonx According to the industry distribution chart, Pulmonx ranks #999999 out of 419 companies in the Medical Devices & Instruments industry.
Is Pulmonx's Net-Net Working Capital too high?
Pulmonx's current Net-Net Working Capital is $-0.05. Based on the distribution chart, Pulmonx ranks #999999 out of 419 companies in the Medical Devices & Instruments industry, which is in the bottom quartile relative to peers. Overall, Pulmonx has a GF Score™ of 57/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Pulmonx's Net-Net Working Capital compare to SRTS and SNWV?
According to the Medical Devices & Instruments industry distribution chart, Pulmonx ranks #999999 out of 419 companies for Net-Net Working Capital. This places Pulmonx in the lower half of its industry. The industry median Net-Net Working Capital is 6.88. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Net-Net Working Capital for a Medical Devices & Instruments company?
The median Net-Net Working Capital among Medical Devices & Instruments companies is 6.88, based on 419 companies in the industry. Companies in the top quartile (top 25%) have a Net-Net Working Capital significantly above this median, while those in the bottom quartile fall well below. However, Net-Net Working Capital 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 Net-Net Working Capital mean?
A high Net-Net Working Capital can signal that a stock is expensive relative to its fundamentals. Ben Graham defined net-net working capital as the per-share sum of cash, 75% of receivables and 50% of inventory less total liabilities. View historical data on Pulmonx For the Medical Devices & Instruments industry, the median Net-Net Working Capital is 6.88 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Pulmonx's current Net-Net Working Capital is $-0.05. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Pulmonx stock overvalued right now?
Based on GuruFocus' analysis, Pulmonx (LUNG) is currently considered Possible Value Trap. The stock's GF Value™ is $6.46, compared to a current price of $2.44 — trading 62.3% below its estimated fair value. The current Net-Net Working Capital is $-0.05. Pulmonx's overall GF Score™ is 57/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net-Net Working Capital calculated?
Net-Net Working Capital is calculated from a company's financial statements. For Pulmonx (LUNG), the current Net-Net Working Capital is $-0.05 as of Jun. 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 Pulmonx (LUNG) Overvalued in 2026?
Based on GuruFocus' analysis, Pulmonx stock appears to be undervalued.
The current stock price of $2.44 is trading 62.3% below its estimated GF Value™ of $6.46.
GuruFocus considers Pulmonx to be Possible Value Trap.
Key valuation signals for LUNG:
Net-Net Working Capital: $-0.05
GF Value™: $6.46 vs. price of $2.44 (62.3% below fair value)
No single metric tells the full story. See the LUNG stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Pulmonx Corp is a commercial-stage medical technology company that provides a minimally invasive treatment for patients with severe emphysema, a form of chronic obstructive pulmonary disease (COPD). solution, which is comprised of the Zephyr Endobronchial Valve (Zephyr Valve), the Chartis Pulmonary Assessment System (Chartis System), and the LungTraX Platform, is designed to treat severe emphysema patients who, despite medical management, are still profoundly symptomatic and either do not want or are ineligible for surgical approaches. The majority of the company's revenue is generated from the provision of cloud hosting and management services. The company geographically, operates in the USA, the EMEA, the Asia Pacific, and other international regions, the majority of revenue from USA.
57GF Score
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