Amprius TechnologiesAMPX -10.47%82 Days Inventory is 29.98 as of Mar. 2026, which is 10% above its 10-year median of 27.17. GuruFocus rates AMPX with a GF Score™ of 82/100 and a GF Value™ of $16.86 (Possible Value Trap). The stock has 3 warning signs investors should review. Among 2,963 Industrial Products companies, Amprius Technologies ranks better than 95.21% on this metric.
The historical rank and industry rank for Amprius Technologies's Days Inventory or its related term are showing as below:
AMPX'
s Days Inventory Range Over the Past 10 Years
Min: 9.46 Med: 27.17 Max: 38.16
Current: 28.08
During the past 6 years, Amprius Technologies's highest Days Inventory was 38.16. The lowest was 9.46. And the median was 27.17.
AMPX's Days Inventory is ranked better than 95.21% of 2963
companies
in the Industrial Products industry
Industry Median: 119.47
vs AMPX: 28.08
Amprius Technologies's Days Inventory
declined
from Mar. 2025 (35.37) to Mar. 2026 (29.98).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Amprius Technologies's Inventory Turnover for the
three
months ended in Mar. 2026 was 3.04.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Amprius Technologies's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.26.
Amprius Technologies (NYSE:AMPX) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
Amprius Technologies's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
Amprius Technologies's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* 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.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
Amprius Technologies Days Inventory Related Terms
Amprius Technologies Days Inventory Historical Data
* Premium members only.
The historical data trend for Amprius Technologies's Days Inventory 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.
AMPX vs PLPC, EOSE, FCEL: Days Inventory Comparison
For the Electrical Equipment & Parts subindustry, Amprius Technologies's Days Inventory, along with its competitors' market caps and Days Inventory 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 Days Inventory vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Amprius Technologies's Days Inventory distribution charts can be found below:
* The bar in red indicates where Amprius Technologies's Days Inventory 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 Days Inventory of 29.98 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Amprius Technologies and its competitors. This is 10% above median its historical median of 27.17. Over the past decade, Amprius Technologies' Days Inventory has ranged from 9.46 to 38.16. According to the industry distribution chart, Amprius Technologies ranks #142 out of 2963 companies in the Industrial Products industry, placing it in the top 4.8%.
Is Amprius Technologies' Days Inventory too high?
Amprius Technologies' current Days Inventory of 29.98 is 10% above median its 10-year median of 27.17. Over the past 10 years, this metric has ranged from a low of 9.46 to a high of 38.16. The Industrial Products industry median Days Inventory is 119.47. Amprius Technologies' value of 29.98 is 74.9% below this industry median. Based on the distribution chart, Amprius Technologies ranks #142 out of 2963 companies in the Industrial Products industry, which is in the top quartile — a strong position relative to peers. Overall, Amprius Technologies has a GF Score™ of 82/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Amprius Technologies' Days Inventory compare to PLPC and EOSE?
According to the Industrial Products industry distribution chart, Amprius Technologies ranks #142 out of 2963 companies for Days Inventory. This places Amprius Technologies in the top 5% of its industry — outperforming the majority of peers. The industry median Days Inventory is 119.47. Amprius Technologies' value of 29.98 is 74.9% below this benchmark. Historically, Amprius Technologies' own Days Inventory has ranged from 9.46 to 38.16 over the past decade. While the company's 10-year median is 27.17 vs. the industry median of 119.47, Amprius Technologies has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for an Industrial Products company?
The median Days Inventory among Industrial Products companies is 119.47, based on 2,963 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Amprius Technologies's current Days Inventory of 29.98 is 74.9% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Amprius Technologies and its competitors. For the Industrial Products industry, the median Days Inventory is 119.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Amprius Technologies's current Days Inventory is 29.98, which is 10% above median its own 10-year median of 27.17. 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 Possible Value Trap. The stock's GF Value™ is $16.86, compared to a current price of $11.72 — trading 30.5% below its estimated fair value. The current Days Inventory is 29.98, which is 10% above median its 10-year median of 27.17 and 74.9% below the Industrial Products industry median of 119.47. 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 Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For Amprius Technologies (AMPX), the current Days Inventory is 29.98 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 $11.72 is trading 30.5% below its estimated GF Value™ of $16.86.
GuruFocus considers Amprius Technologies to be Possible Value Trap.
Key valuation signals for AMPX:
Days Inventory: 29.98 (10% above median its 10-year median of 27.17)
GF Value™: $16.86 vs. price of $11.72 (30.5% below fair value)
Industry Position: 74.9% below the Industrial Products median (#142 of 2963)
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
Days Inventory 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 
