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$AMPX

Amprius Technologies, Inc.

XNYSTechnologyMiscellaneous Electrical Machinery, Equipment & Supplies

$11.46-2.26%$0.2650Prev $11.72LIVE Full chart Live alerts
No recent price bars, the chart lights up when AMPX starts printing.

Why is AMPX down today? It is at $11.46 (-2.26%), and our scanner flagged it 194 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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Our scanner flagged $AMPX 194 times in the last 30 days. Create a free account to track $AMPX, build a watchlist, and get instant unusual-volume alerts — plus 5 free premium days, no card needed.

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Key Stats

Price & performance
Price
$11.46
Change today
-2.26%
Previous close
$11.72
52-week range
$6.36 – $24.23
Valuation & dividend
Market cap
$1.66B
Ownership & volume
Shares outstanding
141.6M
SEC · as of 2026-05-01 · 97d
Insider ownership
5.2%
DEF 14A · 2026-04-29
Institutional own.
65.20%
Total held
70.4%
Tradeable float
42.0M
30% of shares · after 5% insiders + 65% institutions
Short interest
28.0M
▲ +7% vs prior · as of 2026-07-15
Short % of float
66.8%
Days to cover
4.2d
Avg daily volume
8.2M
Classification
Sector
Technology
Industry
Miscellaneous Electrical Machinery, Equipment & Supplies
Exchange
XNYS
Relative volumevs this time of day
5m
1.9x
15m
2.2x
1h
1.1x
1D
0.2x

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Trading profile🔥 Heavily shorted · 67% of floatShortableEasy to borrowNo SSRBorrow via Alpaca · SSR from Reg SHO 201

Insiders

5 buys, 11 sells last 3 months (11/32 over 12 months)
Show 12 recent transactions
InsiderActionShares% of positionOwns afterValueDate
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)+10Kadded 8.2%138Kn/aJun 12, 26
Dixon Donald R
Director
Acquired (grant/award)+10Kadded 3.9%280Kn/aJun 12, 26
Satterthwaite Livingston
Director
Acquired (grant/award)+10Kadded 3.1%347Kn/aJun 12, 26
Bayless Kathleen A
Director
Acquired (grant/award)+10Kadded 5.1%216Kn/aJun 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%628Kn/aJun 4, 26
Stepien Thomas M
Officer
Acquired (grant/award)+37K
0.03% of company
n/a37Kn/aJun 4, 26
Stepien Thomas M
Officer
Sold (automatic/other)-2Ksold 0.3%626K$42K
at $20.97
Jun 4, 26
Stefan Constantin Ionel
Officer
Sold (automatic/other)-3Ksold 0.4%801K$55K
at $17.19
May 27, 26
Stepien Thomas M
Officer
Sold (automatic/other)-4Ksold 0.6%695K$75K
at $17.19
May 27, 26
Sun Kang
Director
Sold (automatic/other)-356sold <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.

$AMPX Sentiment

Bullish
Bearish72Bullish
📰 News: 3 bull · 0 bearToday: -2.3%👥 Community: 0 bull · 0 bear

Blend 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.

Alert· 22m ago -0.2% vs EMA
$AMPX near 200 EMA: -0.16% from 200 EMA at 11:53 AM ET
at $11.58
Alert· 22m ago 3.5× RVOL
AMPX hit 3.461x RVOL at 11:53 AM ET
at $11.58
Alert· 31m ago -0.5% vs EMA
$AMPX near 200 EMA: -0.47% from 200 EMA at 11:44 AM ET
at $11.54
Alert· 32m ago +1.49%
$AMPX moved +1.49% in 1 min (Level 1) at 11:44 AM ET
at $11.54
Alert· 1h ago +1.3% vs EMA
$AMPX near 200 EMA: +1.25% from 200 EMA at 11:15 AM ET
at $11.73
Alert· 1h ago 2.3× RVOL
AMPX hit 2.327x RVOL at 11:15 AM ET
at $11.73
Alert· 1h ago +1.27%
$AMPX moved +1.27% in 1 min (Level 1) at 10:47 AM ET
at $11.67
Alert· 1h ago 14.5× RVOL
AMPX hit 14.531x RVOL at 10:47 AM ET
at $11.63
Alert· 1h ago 2.9× RVOL
AMPX hit 2.925x RVOL at 10:31 AM ET
at $11.82
Alert· 2h ago +1.56%
$AMPX moved +1.56% in 1 min (Level 1) at 10:07 AM ET
at $11.38
Alert· 2h ago -1.04%
$AMPX moved -1.04% in 1 min (Level 1) at 9:42 AM ET
at $11.06
Alert· 2h ago 9.3× RVOL
AMPX hit 9.250x RVOL at 9:34 AM ET
at $11.06
Alert· 3h ago -2.7% vs EMA
$AMPX near 200 EMA: -2.67% from 200 EMA at 9:07 AM ET
at $11.37
Alert· 3h ago +1.22%
$AMPX moved +1.22% in 1 min (Level 1) at 9:07 AM ET
at $11.37
Alert· 6h ago -0.3% vs EMA
$AMPX near 200 EMA: -0.30% from 200 EMA at 5:20 AM ET
at $11.70
Alert· 6h ago 15.3× RVOL
AMPX hit 15.322x RVOL at 5:20 AM ET
at $11.70
Alert· 17h ago -1.2% vs EMA
$AMPX near 200 EMA: -1.22% from 200 EMA at 6:24 PM ET
at $11.66
Alert· 17h ago 17.9× RVOL
AMPX hit 17.894x RVOL at 6:24 PM ET
at $11.66
Alert· 19h ago -1.9% vs EMA
$AMPX near 200 EMA: -1.86% from 200 EMA at 4:52 PM ET
at $11.61
Alert· 19h ago +1.11%
$AMPX moved +1.11% in 1 min (Level 1) at 4:52 PM ET
at $11.61
Alert· 20h ago -0.6% vs EMA
$AMPX near 200 EMA: -0.64% from 200 EMA at 4:03 PM ET
at $11.79
Alert· 20h ago 12.7× RVOL
AMPX hit 12.743x RVOL at 4:03 PM ET
at $11.79
Alert· 21h ago -0.5% vs EMA
$AMPX near 200 EMA: -0.49% from 200 EMA at 2:35 PM ET
at $11.85
Alert· 21h ago 2.7× RVOL
AMPX hit 2.666x RVOL at 2:35 PM ET
at $11.85
Alert· 22h ago -1.06%
$AMPX moved -1.06% in 1 min (Level 1) at 2:06 PM ET
at $11.80
News· SEC EDGAR· 1d ago
Amprius Technologies Reports Second Quarter 2026 Financial Results and Recent Business Highlights
News· SEC EDGAR· 49d ago
Amprius Technologies, Inc. filed an 8-K: Shareholder Vote
News· SEC EDGAR· 78d ago
Amprius Technologies, Inc. filed an 8-K: Unregistered Share Sale
News· SEC EDGAR· 90d ago
Amprius Technologies, Inc. filed an 8-K: Material Agreement, Unregistered Share Sale
News· Investing.com· 149d ago Bullish
Amprius Stock Is Flashing a Signal That Traders Rarely Ignore
News· The Motley Fool· 178d ago Neutral
Is Amprius Stock a Buy or Sell After Its Chief Technology Officer Dumped Nearly 40,000 Shares?
News· The Motley Fool· 275d ago Bullish
Top 3 Stocks Powering the 6-Month 100% Gain in Clean Energy
News· Investing.com· 279d ago Bullish
5 Stocks to Stuff Your Portfolio This November

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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 11 unusual-volume and momentum alerts on AMPX today, peaking at 15.3x its normal volume.

What is the AMPX stock price today?

AMPX last traded at $11.46, down 2.26% 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 194 times in the last 30 days.

What exchange is AMPX on?

AMPX (Amprius Technologies, Inc.) trades on XNYS, with a market cap of about $1.66B 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.