$AMPX
Amprius Technologies, Inc.
XNYS•Technology•Miscellaneous Electrical Machinery, Equipment & Supplies
Why is AMPX down today? It is at $10.25 (-3.61%), and our scanner flagged it 292 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment AMPX spikes, and full due diligence on AMPX — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $10.25
- Change today
- -3.61%
- Previous close
- $10.63
- 52-week range
- $6.55 – $24.23
- Market cap
- $1.56B
- Institutional own.
- 71.85%
- Total held
- 76.9%
- Tradeable float
- 33.8M 23% of shares · after 5% insiders + 72% institutions
- Short interest
- 23.9M ▼ -15% vs prior · as of 2026-07-31
- Short % of float
- 70.8%
- Days to cover
- 4.2d
- Avg daily volume
- 8.1M
- Sector
- Technology
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- Exchange
- XNYS
- 5m
- 0.2x
- 15m
- 0.5x
- 1h
- 0.6x
- 1D
- 0.2x
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Why is $AMPX down today?
AMPX is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 6 unusual-volume and momentum alerts on AMPX today, peaking at 3.6x its normal volume.
Likely catalystMaterial Agreement · New Financial Obligation, from an SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
From the trading subreddits (WallStreetBets, r/stocks and more). Retail chatter, not a signal. Do your own research.
Insiders
5 buys, 8 sells last 3 months (11/32 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Dixon Donald R Director | Sold (automatic/other) | -85K 0.06% of company | sold 14% | 523K | $1.5M at $17.17 | Jun 15, 26 |
Chu Steven Director | Acquired (grant/award) | +10K | added 8.2% | 138K | n/a | Jun 12, 26 |
Dixon Donald R Director | Acquired (grant/award) | +10K | added 3.9% | 280K | n/a | Jun 12, 26 |
Satterthwaite Livingston Director | Acquired (grant/award) | +10K | added 3.1% | 347K | n/a | Jun 12, 26 |
Bayless Kathleen A Director | Acquired (grant/award) | +10K | added 5.1% | 216K | n/a | Jun 12, 26 |
Dixon Donald R Director | Sold (automatic/other) | -40K 0.03% of company | sold 6.2% | 608K | $765K at $19.13 | Jun 9, 26 |
Stepien Thomas M Officer | Sold (automatic/other) | -67K 0.05% of company | sold 9.7% | 628K | n/a | Jun 4, 26 |
Stepien Thomas M Officer | Acquired (grant/award) | +37K 0.03% of company | n/a | 37K | n/a | Jun 4, 26 |
Stepien Thomas M Officer | Sold (automatic/other) | -2K | sold 0.3% | 626K | $42K at $20.97 | Jun 4, 26 |
Stefan Constantin Ionel Officer | Sold (automatic/other) | -3K | sold 0.4% | 801K | $55K at $17.19 | May 27, 26 |
Stepien Thomas M Officer | Sold (automatic/other) | -4K | sold 0.6% | 695K | $75K at $17.19 | May 27, 26 |
Sun Kang Director | Sold (automatic/other) | -356 | sold <0.1% | 1.28M | $6K at $17.19 | May 27, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
Dilution watch
UnavailableWe could not reach SEC EDGAR, so the dilution check did not run for $AMPX. This is not a clean result: there may be an offering, a registration or a shelf on file that we were unable to read. Check it yourself on SEC EDGAR before trading it.
$AMPX Sentiment
BearishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$AMPX Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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AMPX stock FAQ
Why is $AMPX down today?
AMPX is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 6 unusual-volume and momentum alerts on AMPX today, peaking at 3.6x its normal volume.
What is the AMPX stock price today?
AMPX last traded at $10.25, down 3.61% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live AMPX alerts?
The AMPX Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged AMPX 292 times in the last 30 days.
What exchange is AMPX on?
AMPX (Amprius Technologies, Inc.) trades on XNYS, with a market cap of about $1.56B in the MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES sector.
Is AMPX good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge AMPX for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.