$AMBA
Ambarella, Inc. Ordinary Shares
XNAS•Technology•Semiconductors & Related Devices
Why is AMBA down today? It is at $72.21 (-3.19%), and our scanner flagged it 159 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment AMBA spikes, and full due diligence on AMBA — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $72.21
- Change today
- -3.19%
- Previous close
- $74.59
- 52-week range
- $48.30 – $96.69
- Market cap
- $3.28B
- Institutional own.
- 95.29%
- Total held
- 99.8%
- Tradeable float
- 94K 0% of shares · after 4% insiders + 95% institutions
- Short interest
- 5.2M ▲ +31% vs prior · as of 2026-07-31
- Days to cover
- 2.2d
- Avg daily volume
- 1.1M
- Next earnings
- Sep 3 · in 14d (after close)
- Sector
- Technology
- Industry
- Semiconductors & Related Devices
- Exchange
- XNAS
- 5mthin
- 0.4x
- 15mthin
- 0.4x
- 1hthin
- 0.4x
- 1D
- 0.4x
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Why is $AMBA down today?
AMBA is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on AMBA today.
Likely catalystExecutive / Board Change · Shareholder Vote, from an SEC filing. Read it →Latest filingSC 13GPassive 5%+ stake disclosedAug 14, 2026 · 6 days agoAnalyst data via Nasdaq. Not investment advice.
Insiders
Insiders selling0 buys, 13 sells last 3 months (18/43 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Chen Yun-Lung Officer | Sold (automatic/other) | -6K 0.01% of company | sold 9.0% | 61K | $469K at $78.66 | Jul 9, 26 |
Wang Feng-Ming Officer | Sold (automatic/other) | -16K 0.04% of company | sold 2.1% | 774K | $1.5M at $90.08 | Jul 1, 26 |
Ju Chi-Hong Officer | Sold (automatic/other) | -10K 0.02% of company | sold 6.0% | 156K | $888K at $88.84 | Jul 1, 26 |
Paisley Christopher B Director | Sold (automatic/other) | -250 | sold 0.6% | 41K | $16K at $62.01 | Jun 26, 26 |
Wang Feng-Ming Officer | Sold (automatic/other) | -6K 0.01% of company | sold 0.8% | 800K | $421K at $67.87 | Jun 17, 26 |
Wang Feng-Ming Officer | Sold (automatic/other) | -10K 0.02% of company | sold 1.3% | 790K | n/a | Jun 17, 26 |
Ju Chi-Hong Officer | Sold (automatic/other) | -2K | sold 1.2% | 166K | $137K at $67.87 | Jun 17, 26 |
Lee Chan W Officer | Sold (automatic/other) | -3K | sold 1.8% | 157K | $200K at $67.87 | Jun 17, 26 |
Young John Alexander Officer | Sold (automatic/other) | -3K | sold 2.7% | 114K | $216K at $67.87 | Jun 17, 26 |
Young John Alexander Officer | Sold (automatic/other) | -2K | sold 1.6% | 113K | $124K at $66.98 | Jun 17, 26 |
Chen Yun-Lung Officer | Sold (automatic/other) | -10K 0.02% of company | sold 13% | 67K | $661K at $67.06 | Jun 12, 26 |
Wang Feng-Ming Officer | Sold (automatic/other) | -33K 0.07% of company | sold 3.9% | 806K | $2.9M at $90.38 | May 26, 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.
$AMBA Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$AMBA Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
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AMBA stock FAQ
Why is $AMBA down today?
AMBA is one of today's most active names, trading on unusually heavy volume (live price and day move above). Our scanner has fired 1 unusual-volume and momentum alert on AMBA today.
What is the AMBA stock price today?
AMBA last traded at $72.21, down 3.19% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
When does AMBA report earnings?
Ambarella, Inc. Ordinary Shares (AMBA) is next expected to report earnings on Thursday, September 3, 2026 (after close), about 14 days away. Earnings reports often cause large overnight gaps, so many traders manage risk around the date. The date can shift until the company officially confirms it.
Where can I see live AMBA alerts?
The AMBA 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 AMBA 159 times in the last 30 days.
What exchange is AMBA on?
AMBA (Ambarella, Inc. Ordinary Shares) trades on XNAS, with a market cap of about $3.28B in the SEMICONDUCTORS & RELATED DEVICES sector.
Is AMBA 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 AMBA for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.