The historical rank and industry rank for Amprius Technologies's FCF Margin % or its related term are showing as below:
AMPX'
s FCF Margin % Range Over the Past 10 Years
Min: -490.31 Med: -233.14 Max: -49.41
Current: -65.89
During the past 6 years, the highest FCF Margin % of Amprius Technologies was -49.41%. The lowest was -490.31%. And the median was -233.14%.
AMPX's FCF Margin % is ranked worse than 94.63% of 3036
companies
in the Industrial Products industry
Industry Median: 1.565
vs AMPX: -65.89
Amprius Technologies FCF Margin % Related Terms
Amprius Technologies FCF Margin % Historical Data
* Premium members only.
The historical data trend for Amprius Technologies's FCF Margin % 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.
For the Electrical Equipment & Parts subindustry, Amprius Technologies's FCF Margin %, along with its competitors' market caps and FCF Margin % 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.
Amprius Technologies FCF Margin % vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Amprius Technologies's FCF Margin % distribution charts can be found below:
* The bar in red indicates where Amprius Technologies's FCF Margin % 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.
Amprius Technologies (AMPX) has a FCF Margin % of -134.06% as of Mar. 2026. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on Amprius Technologies and its competitors. According to the industry distribution chart, Amprius Technologies ranks #2873 out of 3036 companies in the Industrial Products industry, placing it in the top 94.6%.
Is Amprius Technologies' FCF Margin % too high?
Amprius Technologies' current FCF Margin % is -134.06%. Based on the distribution chart, Amprius Technologies ranks #2873 out of 3036 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, Amprius Technologies has a GF Score™ of 82/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Amprius Technologies' FCF Margin % compare to EOSE and ATKR?
According to the Industrial Products industry distribution chart, Amprius Technologies ranks #2873 out of 3036 companies for FCF Margin %. This places Amprius Technologies in the lower half of its industry. The industry median FCF Margin % is 1.57. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good FCF Margin % for an Industrial Products company?
The median FCF Margin % among Industrial Products companies is 1.57, based on 3,036 companies in the industry. Companies in the top quartile (top 25%) have a FCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, FCF Margin % 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 FCF Margin % mean?
A high FCF Margin % can signal that a stock is expensive relative to its fundamentals. Free cash flow margin is the ratio of total free cash flow to net sales. View historical data on Amprius Technologies and its competitors. For the Industrial Products industry, the median FCF Margin % is 1.57 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Amprius Technologies's current FCF Margin % is -134.06%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Amprius Technologies stock overvalued right now?
Based on GuruFocus' analysis, Amprius Technologies (AMPX) is currently considered Modestly Undervalued. The stock's GF Value™ is $16.56, compared to a current price of $12.52 — trading 24.4% below its estimated fair value. The current FCF Margin % is -134.06%. Amprius Technologies' overall GF Score™ is 82/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is FCF Margin % calculated?
FCF Margin % is calculated from a company's financial statements. For Amprius Technologies (AMPX), the current FCF Margin % is -134.06% as of Mar. 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 Amprius Technologies (AMPX) Overvalued in 2026?
Based on GuruFocus' analysis, Amprius Technologies stock appears to be undervalued.
The current stock price of $12.52 is trading 24.4% below its estimated GF Value™ of $16.56.
GuruFocus considers Amprius Technologies to be Modestly Undervalued.
Key valuation signals for AMPX:
FCF Margin %: -134.06%
GF Value™: $16.56 vs. price of $12.52 (24.4% below fair value)
No single metric tells the full story. See the AMPX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Amprius Technologies Inc is engaged in the production of silicon anodes for high-energy-density lithium-ion batteries. The company develops, manufactures and markets lithium-ion batteries for mobility applications, including the aviation, electric vehicle (EV) and light electric vehicle (LEV) industries. The company's batteries are used for existing and emerging aviation applications, including unmanned aerial systems, such as drones and high-altitude pseudo satellites. Its silicon anodes are a direct drop-in replacement of the graphite anode in traditional lithium-ion batteries, and its manufacturing processes leverage the manufacturing processes for conventional lithium-ion batteries and the related supply chain.
82GF Score
Get the complete analysis for AMPX
FCF Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
AMPX has been successfully added to your 
