Ambarella (AMBA) logo

Ambarella (AMBA) stock

Chips for AI cameras , market cap $2.4B

Pre-market
$58.97
+0.72%

Close $58.55 +6.13%

As of 9:22 AM ET pre-market, delayed 15+ min · Live for Pro members

Why AMBA is down

Down 29% in 3 months while the S&P 500 fell 5%.

  • Its diluted share count went from 34.7M in fiscal 2021 to 42.7M in fiscal 2026, up 23.1%.

Sources: Price history, Nov 6, 2026; Annual reports, Jan 31, 2026

−2Long-term trend below a falling 200-day average, down over one year

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1 more reason, free with an account →3 more reasons why AMBA is down, from its filings, with the other side, the timeline, and its peers, for Pro members.
Quality Score
1
Below Average
In its industry
#54of 84
Checks firing
2of 14
Transition
From 52-week high
-39.4%
under its best in a year

AMBA's Quality Score rose 1 point on Fri, Nov 6, to 1. It closed near its high of the day.

See AMBA's 14 chart checksSee it live, free for 24 hours. No account. No card. Then keep going with a free account.

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Key facts on AMBA

Key facts on AMBA
Since its Dec 2021 highDown 75% a $26.4M loss → a $56.3M loss a year
Latest filing10-Q, Sep 4 Filed its quarterly report (10-Q) for the quarter to Jul 31, 2026

AMBA in the news

Chip stocks rose together

Fri Nov 6: Group

“U.S. chip stocks rebound sharply after Thursday's brutal selloff”

AMBA closed +6.1% that day.

Reported by Yahoo Finance · covered by 13 outlets

Get an alert on AMBA's next big story →

The move is what AMBA did that session, not a claim about why.

What moves chips

Big Tech spending$201.9B+108%in the quarter, Jul to Sepon a year

What Microsoft, Alphabet, Amazon, and Meta together spent on buildings and equipment, data centers included, in their latest quarter, against a year earlier. Capital spending as each reports it, not a count of chips bought.

Each company's quarterly report (10-Q) on SEC EDGAR, Jul to Sep. Change on the same period a year earlier.

TSMC monthly sales and US export rules, for Pro members.

What's next

Wed Dec 9: Nasdaq 54th London Investor…Industry event · date confirmed.

Tested. Our top-scored stocks returned 2.2x the average stock over the next month. Reconstructed after the fact; recorded live since Sep 9, 2026. How we tested it

AMBA catalysts

Coming up

After its last 4 reports it closed -14.0% on average, higher 0 of 4 times.

6 past catalysts since 2018, with sizes and sources, for Pro members.

How AMBA ranks in Semiconductors

AMBA is #54 of 84 by Quality Score.

How AMBA ranks in Semiconductors
RankStockQuality Score
54Ambarella (AMBA) logoAMBAAmbarella1

Net income over four quarters: AMBA -$56.3M, CRUS $431M, SITM $14.1M, SLAB -$39.1M.

More in Semiconductors

When does AMBA report earnings, and what happens after?

Reports Tue Nov 24, after the close (in 15 days). Confirmed.

What an earnings report is: every 3 months, a company tells everyone how much it sold and earned. We read the figures, the outlook, and how the stock moved after.

Close after the report, last 3

-14.9%-21.4%-0.8%
Feb 26May 28Sep 3
ReportedGapReaction5
days
Sep 3, 2026After close-0.3%-0.8%+7.1%
May 28, 2026After close-10.2%-21.4%-21.6%
Feb 26, 2026After close-13.9%-14.9%-21.9%

AMBA closed higher after 0 of its last 4 reports.

All 4 reports, and AMBA's Quality Score going into each

AMBA sales and profit by year

Sales and profit by year

Sales grew in five of the last seven years, to $391M in 2026. It lost money in each of the eight years.

AMBA has 2 of 14 chart checks firing

Volume1 of 3 shown
Tight range1 of 3 shown
Buying1 of 3 shown
The other 10 checks on AMBA, and all 14 on every stock.Get in free →

AMBA RSI on Nov 6: 39.6, below its 50-day and 200-day averages

Not scored

RSI 39.6, MACD below signal, below both averages. Not scored.

The deep dive on AMBA

6 more findings on AMBA, each with its source, for Pro members.

AMBA insider trades

5 insiders sold $3.7M across 10 filings in the last 6 months. No open-⁠market buys on record. The newest:

SellFeng-Ming Wang$395KCEOat $64.83 on Sep 17, filed Sep 18

All 10 insider filings on AMBA from the last six months, for Pro members.

All AMBA insider trades

AMBA's officers and directors

Officers and directors with a Form 4 in the last 12 months.

5 more officers and directors file at AMBA.

See insider trades by person

Which ETFs hold AMBA?

In ETFs: AMBA is under 0.1% of FTEC, under 0.1% of VGT, and under 0.1% of VTI, the most of the 24 funds Breakaway covers, by each fund's latest filing, Jun 30 to Aug 31, 2026.

About Ambarella

Ambarella Inc is a developer of low-power system-on-a-chip, or SoC, semiconductors and software for edge and physical artificial intelligence (AI) applications and intelligent automation. Its products are used in a wide variety of human viewing, computer vision for edge and physical AI applications, including a variety of video security cameras, automotive camera systems, fixed robots, autonomous mobile robots (AMRs), industrial applications, intelligent transportation systems, and consumer devices, such as action, drone and 360 degree cameras. The company operates as a single operating and reportable segment and derives substantially all of its revenue from development and sales of low-power AI-based processing and video and image processing SoC solutions.

380 employeesSanta Clara, CAambarella.com

What Ambarella says it competes with

“The global semiconductor market in general, and the AI and video and image processing markets in particular, are highly competitive.”

From its annual report, SEC filing · Mar 23, 2026

Here is what Pro members see.

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  • What would turn AMBA's score around: 6 things
  • 1 more filing explained, a plain line each
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BreakawaySep 18Feng-Ming Wang sold AMBA$395K at $64.83, filed Sep 18

Alerts are optional.

See AMBA's 14 chart checks

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Straight AnswersStraight Answers

As of Nov 9, 2026: AMBA's Quality Score is 1 (Below Average), #54 of 84 in Semiconductors. Insiders sold $3.7M in the last 6 months (Form 4).

What does AMBA's Quality Score say?

AMBA scores 1 today, which Breakaway calls Below Average. It is #54 of 84 in Semiconductors by Quality Score, with 2 of 14 chart checks firing. Down 29% in 3 months while the S&P 500 fell 5%. Breakaway does not say whether to buy any stock: the score does not know your situation, and it is not a recommendation to buy or sell anything. Please do your own research.

What is AMBA's Quality Score?

AMBA scores 1 today, which Breakaway calls Below Average (0 to 5). That is #54 of 84 in Semiconductors by Quality Score. The score adds up the chart checks, the trend, the company's filed sales, its profits, the news, insider trades, and Congress trades. The section above lists the lines behind AMBA's 1.

Are insiders buying AMBA?

5 insiders sold $3.7M across 10 filings in the last 6 months. No open-⁠market buys on record. The newest is Feng-⁠Ming Wang, CEO, who sold $395K on Sep 17. Every filing, with the scored weight, for Pro members.

Are the prices delayed?

Only on the public pages, which run at least 15 minutes behind. Pro members, and anyone on a guest pass, see real-time prices: the scanner refreshes every 15 seconds, and your watchlist every few seconds, pre-market and after hours included.

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Our top-scored stocks' record: Oct 2021 to Sep 2026, before costs. Recorded live since Sep 9, 2026.

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