Amprius Technologies, Inc. (AMPX) Stock

Amprius Technologies, Inc. (AMPX) is a Industrials stock trading at $10.20 (as of 2026-08-20), with a market capitalization of $1.44B. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Amprius Technologies, Inc. manufactures and distributes lithium-ion batteries. Its products include silicon nanowire anode lithium-ion batteries. The company serves the aerospace, defense, and electric vehicle industries. Amprius Technologies, Inc. was incorporated in 2008 and is headquartered in Fremont, California.

Understand Amprius Technologies, Inc.: how it makes money

Amprius Technologies makes and distributes lithium-ion batteries, including silicon nanowire anode batteries, sold to customers in aerospace, defense, and electric vehicles.

With product revenue around 0.01B and a negative operating margin of -23.4%, the profit engine appears to hinge on converting remaining performance obligations (0.03B) into ongoing product deliveries and scaling revenue.

Revenue by segment (latest quarter)
Product$0.0B
Development Services$0.0B

Business quality (Weak): Operating losses persist, but the company shows measurable customer shipment activity and a non-trivial backlog metric, suggesting commercialization progress yet execution and scale risk.

Bull case

  • Backlog visibility: Remaining Performance Obligations are reported at 0.03B, which can help support future product activity.
  • Commercial execution signals: The company reported Batteries Shipped to End Customers at 159 and Number of Customers Receiving Shipments at 93, with Repeat Customers at 50.
  • Manufacturing scale planning: Annual Manufacturing Capacity is reported at 10,000,000 (Pouch Cells) and 125,000,000 (Cylindrical Cells), and the portfolio includes 22 Cell Designs in Portfolio.

Bear case

  • Ongoing operating loss: Operating margin is -23.4%, and the quarter shows small Product Revenue (0.01B).
  • Limited contribution from development services: Development Services Revenue is reported at 0.0B for the quarter.
  • Backlog may not exclude non-core support: Remaining Performance Obligations Excluding Government Grant Revenue are reported at 0.02B versus Remaining Performance Obligations Including Government Grant of 0.04B, indicating some portion of backlog relates to government grant dynamics.
Valuation — source: SEC EDGAR (first-party)
Price$10.20
Market Cap$1.44B
Price / Book11.50
Price / Sales12.84
FCF Yield-10.3%
Profitability & Growth — source: SEC EDGAR
Revenue (TTM)$73.01M
Net Margin-60.3%
Revenue Growth (YoY)202.1%
EPS Growth (YoY)-22.2%
FCF Growth (YoY)-2.8%
Financial Health — source: SEC EDGAR
Altman Z-Score14.17 (safe)
Valuation vs Sector & Industry
Sector P/E (Industrials)25.9
Industry P/E (Electrical Equipment)37.8
Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional HolderBlackRock, Inc. ($155.54M)
Institutional Holders Tracked10
Company
SectorIndustrials
IndustryElectrical Equipment
CEOThomas Michael Stepien
Employees99
CountryUS
IPO Date2022-09-15

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AMPX earnings history · AMPX institutional & insider holders · AMPX KPIs & operating metrics · AMPX financials · AMPX investor presentations & press releases · AMPX SEC filings · AMPX peers · Congress trades · Insider trades · Short interest · Stock screener

Data as of 2026-08-20.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.