AMPX
Amprius Technologies Technology Investor Relations →
Amprius Technologies (AMPX) closed at $18.20 as of 2026-03-20, trading 219.1% above its 200-week moving average of $5.70. The stock moved further from the line this week, up from 218.5% last week. The 14-week RSI sits at 70, indicating neutral momentum.
Trading volume is running at 1.1x of its 14-week average, which is in the normal range. The balance between buying and selling volume (1.39 ratio) is neutral — neither side is clearly dominating.
Over the past 135 weeks of data, AMPX has crossed below its 200-week moving average 1 time. On average, these episodes lasted 97 weeks. The average one-year return after crossing below was -75.2%, suggesting these dips have not historically been reliable buying opportunities for this stock.
With a market cap of $2.4 billion, AMPX is a mid-cap stock. Free cash flow yield is currently negative, meaning the company is burning cash. Return on equity stands at -50.8%. The stock trades at 23.6x book value.
Share count has increased 38.9% over three years, indicating dilution.
Over the past 2.7 years, a hypothetical investment of $100 in AMPX would have grown to $386, compared to $149 for the S&P 500. That represents an annualized return of 65.9% vs 16.2% for the index — confirming AMPX as a market-beating investment and the kind of quality company where buying during 200-week moving average touches has historically been rewarded.
Free cash flow has been declining. A deteriorating cash flow trend warrants extra scrutiny — the stock may be cheap for a reason.
Business Health
Annual financials — how the underlying business has performed over the past several years.
Cash Flow Free cash flow & net income ($M)
Revenue Annual revenue ($M) — business growth proxy
Total Debt Balance sheet debt ($M)
ROIC Return on invested capital (%)
FCF Yield Free cash flow / market cap (%) — Yartseva signal
Gross Margin Pricing power & competitive moat (%)
Shares Outstanding Buybacks vs dilution (millions)
Growth of $100: AMPX vs S&P 500
Monthly data normalized to $100 at start. Vertical dashed lines mark 200-week MA touches.
What Happens After AMPX Crosses Below the Line?
Across 1 historical episodes, buying AMPX when it crossed below its 200-week moving average produced an average return of -77.0% after 12 months (median -77.0%), compared to +27.0% for the S&P 500 over the same periods. After 24 months, the average return was +50.0% vs +47.0% for the index.
Each line shows $100 invested at the moment AMPX crossed below its 200-week MA. Bold blue = stock average. Gray dashed = S&P 500 average over same periods.
Historical Touches
AMPX has crossed below its 200-week MA 1 time with an average 1-year return of +-75.2% after recovery.
| Crossed Below | Recovered | Weeks | Max Depth | 1-Year Return | Return Since Touch |
|---|---|---|---|---|---|
| Aug 2023 | Jun 2025 | 97 | 86.5% | -75.2% | +296.5% |
| Average | 97 | — | +-75.2% | — |
Frequently Asked Questions
Is AMPX below its 200-week moving average?
No. Amprius Technologies (AMPX) is currently 219.1% above its 200-week moving average of $5.70. It would need to fall to $5.70 to cross below the line.
What is AMPX's 200-week moving average price?
Amprius Technologies's 200-week moving average is $5.70 as of 2026-03-20. This is the average weekly closing price over roughly the last 4 years, and it acts as a long-term trend line. When a stock drops below this level, it can signal that the price has fallen far enough from the long-term trend to attract value-oriented investors.
What happens when AMPX drops below its 200-week moving average?
AMPX has crossed below its 200-week moving average 1 time in our data. The average one-year return after these crossings was -75.2%, meaning the dips were not reliable buying signals for this particular stock. These episodes lasted 97 weeks on average.
Is AMPX a good value right now?
Here's what our data says about AMPX as of 2026-03-20: The stock is above its 200-week moving average, so it doesn't currently meet our primary signal. The 14-week RSI is 70. Free cash flow is currently negative. Return on equity is -50.8%. Price-to-book is 23.6x. This is not a buy or sell recommendation — always do your own research.
How does AMPX compare to the S&P 500?
Over the past 2.7 years, $100 invested in AMPX would have grown to $386, compared to $149 for the S&P 500. That's 65.9% annualized vs 16.2% for the index. AMPX has outperformed the broader market over this period.
Not financial advice. This is an educational tool. Past performance does not guarantee future results. Do your own research before making investment decisions.
Data as of week of 2026-03-20