Amprius Technologies, Inc. (AMPX) stock
Close on Nov 12, 2026Market cap $1.22BP/E –Yield –
Amprius Technologies, Inc. grew revenue 117.3% to $126.95M over the twelve months to Sep 30, 2026. Free cash flow was -$61.80M. At the latest close the market valued the company at $1.22B.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $1.22B
- P/E ratio
- –
- Price to sales
- 9.61
- Price to book
- 9.78
- Dividend yield
- –
- Free cash flow yield
- -5.07%
Fundamentals
- Revenue
- $126.95M
- Net income
- -$36.09M
- EPS, diluted
- -$0.28
- Free cash flow
- -$61.80M
- Book value per share
- $0.85
- Diluted shares
- 146M
Trading
- Next earnings
- Mar 3, 2027 (estimated, after the close)
- Previous close
- $8.55
- Open
- $8.10
- Day's range
- $7.84 – $8.84
- Volume
- 6,702,586
- Average volume (20 days)
- 5,674,403
- Index membership
- Russell 2000 (since Mar 2025), Russell 3000 (since Aug 2025)
- Beta (5 years)
- 1.97
- 52-week range
- $7.02 – $24.23
- RSI (14 days)
- 46.5
- Volatility (1 year)
- 97.0%
- Relative volume
- 1.19×
- WACC
- 14.7%
Index membership is inferred from the holdings of funds that track each index (IWM, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2022, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 12, 2026. The S&P 500 is measured by the SPY fund.
| Period | AMPX | S&P 500 | Difference | AMPX per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -5.9% | -2.7% | −3.2 pts | ||
| 3 months | -31.8% | -1.7% | −30.0 pts | ||
| Year to date | +5.8% | +11.9% | −6.1 pts | ||
| 1 year | -32.5% | +12.0% | −44.5 pts | ||
| 3 years | +160.1% | +78.2% | +81.9 pts | +37.5% | +21.2% |
Six years at a glance
Fiscal years 2020 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Amprius Technologies filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Results
- Results
- Results
- Results
About Amprius Technologies
Miscellaneous Electrical Machinery, Equipment & Supplies
Amprius Technologies, Inc. develops, manufactures, and markets silicon anode lithium-ion batteries primarily designed for mobility applications, including aviation, ground, and marine vehicles. Its commercial product platforms include SiCore and SiMaxx batteries offered in energy, power, and balanced formats. The company's battery cells primarily serve aviation markets, including unmanned aerial systems such as drones and high-altitude pseudo satellites, alongside light electric vehicles. Its customer base includes aerospace and defense organizations such as AALTO Airbus, AeroVironment, BAE Systems, Nokia Drone Networks, and the U.S. Army.
Company profile, executives and historyAmprius Technologies stock: common questions
What is Amprius Technologies's stock price?
AMPX closed at $8.35 on Nov 12, 2026, down 2.34% on the day. Over the past 52 weeks it traded between $7.02 and $24.23.
What is Amprius Technologies's market cap?
Amprius Technologies was worth $1.22B at the close on Nov 12, 2026: the share price times the diluted shares outstanding.
What is AMPX's P/E ratio?
Amprius Technologies lost money over the twelve months to Sep 30, 2026 (diluted EPS -$0.28), so it has no meaningful P/E ratio.
How much revenue does Amprius Technologies make?
Amprius Technologies reported revenue of $126.95M for the twelve months to Sep 30, 2026, up 117.3% from a year earlier.
Does Amprius Technologies pay a dividend?
No. Amprius Technologies has not paid a cash dividend over the last twelve months.
When does Amprius Technologies report earnings next?
Amprius Technologies is expected to report Q4 FY2026 results on Mar 3, 2027, after the close. The date is estimated from its past reporting pattern until the company confirms it.
How has AMPX stock performed over the past year?
Including dividends, AMPX returned -32.5% over the past year, against +12.0% for the S&P 500.
How many AMPX shares are sold short?
22M shares were sold short at the latest FINRA report, 16.14% of the float, or 4.3 days of average trading volume.
Who are Amprius Technologies's competitors?
Companies most similar to Amprius Technologies by business, industry and size include ENVX, DFLI, ULBI, MVST, CBAT.
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