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After hours, from the scannerPrice and score as of 7:27 PM ET, delayed 15 minutes
AMBA
Ambarella, Inc.
score
$66.15-1.14%Semiconductors · $3B
Quality Score
-3
Poor
Traits firing
1 of 13
Transition
In its industry
#65
of 66 names
From 52-week high
-31.6%
Below the 200-day
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Reports in about 11 weeksWhy it scores -31 of 13 traits firing10 insider filingsRanked against 66 in its industry
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Earnings
When does AMBA report, and what happens after?
Estimated from when the company reported in past quarters. It has not confirmed a date yet; when it does, the 8-K sets it.
Reports in about 11 weeksaround Dec 4, 2026, after close, estimated.
Over its last 4 reports it gapped -9.1% on average and closed -14.0%, finishing higher 0% of the time.
-18.8%-14.9%-21.4%-0.8%
Nov 25Feb 26May 28Sep 3
| Reported |
|---|
Quality Score
Why AMBA scores -3
The two largest lines, with the reason behind each. Every line adds up to the badge; members see all of them.
-3Quality
scorePoorTransition, 1 of 13 traits firing
scorePoorTransition, 1 of 13 traits firing
Average is 5, Above average 10, Strong 14, Exceptional 18.
Well below its own recent run. AMBA scores -3 today, against a median of 1 over its last 20 recorded sessions. The largest single line today is Long-term trend, −2: below a falling 200-day, down over one year.
Momentum traits
1 of AMBA's 13 conditions is firing
One check from each of the four groups is shown, a firing one when the group has one. Volume expansion and volume dry-up cannot both be true, so 13 is the most any stock can score.
Trend0 on, 1 of 5 shown
MA FAN21 EMAW.EMAHH/HL52W HI
The moving averages stack in order. Price holds above a rising 21-day line. The weekly chart agrees, and the stock sits near its 52-week high.
Participation0 on, 1 of 3 shown
VOLVDUU/D VOL
Heavy volume when the stock runs, and quiet volume while it rests. More shares change hands on up days than on down days.
Compression1 on, 1 of 3 shown
ATR SQZSQUEEZENR7
The daily trading range gets tight against the stock's own history. Quiet ranges do not stay quiet forever.
Insider filings
Who is buying and selling AMBA inside the company
Open-market Form 4 filings from the SEC, newest filing first. Grants, option exercises, and tax withholding are left out.
5 insiders sold $3.7M across 10 filings in the last 6 months. No open-market buys on record.
- SellFeng-Ming Wang$395KCEOat $64.83 on Sep 17, filed todaySellFeng-Ming WangCEO$395Kat $64.83 on Sep 17, filed today
- SellJohn Alexander Young$203KCFOat $64.83 on Sep 17, filed todaySell
Optional alerts
Have AMBA tell you.
Alerts are off until you set one. This is the push AMBA's own filing would have sent.
BreakawaynowFeng-Ming Wang sold AMBA$395K at $64.83, filed Sep 18
Your rule: an insider buys AMBA.This is what the push looks like.
Government trade disclosedInsider buying filedEarnings within a few daysNews catalystNew 52-week highA pre-market or after-hours moveVolume above a level you pickSqueeze setup appearsMACD bullish crossA price you pick
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Its industry
How AMBA ranks in Semiconductors
AMBA is 65 of 66 by Quality Score. The three highest are ranked; the rest are listed by name, with their scores for members.
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Where does the data come from?
Daily bars, quotes, reference data, headlines, and short interest come from Massive, formerly Polygon, a licensed market data vendor. The age of the quotes is shown at the top of every page. Insider trades, notable holders and profits come straight from the SEC. That means Form 4 filings, 13F filings and XBRL financial data on EDGAR. Government trades come from the public STOCK Act and Office of Government Ethics filings. The market-wide headlines on the market line also come from the public headline feeds CNBC, MarketWatch and Yahoo Finance publish, shown as the headline, the source and a link to the article. Splits, dividends, and the financial statements on each ticker page come from the vendor's reference data. The 8-K filings on EDGAR are read for the items that move a price. Five years of history is loaded for every stock. So the 200-day and 52-week traits and the setup odds rest on real history. Options flow is not part of the product.
How often does it update?
The scan rebuilds every 15 seconds while the market is open, and every five minutes when it is closed. An open scanner tab picks up each rebuild without a refresh. Prices, scores, the ranking and the market line update in place. Nothing flickers when nothing has changed. The whole-market movers refresh every 15 seconds too. News sweeps the whole list every few minutes. Congress filings are checked every hour, insider filings every three hours and earnings every six, and a company expected to report tonight or this morning is checked every five minutes until its filing lands. Short interest, holders, and profits refresh on their own schedules. The ticker page states each schedule beside the figure.
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A screening tool for momentum traders. It ranks technical and news conditions. It is not investment advice, and nothing here is a recommendation to buy or sell any security. The price, the score, the traits, and the industry rank on this page are delayed at least 15 minutes. Filings are shown as filed, because a disclosure is already days or weeks old when it becomes public. Earnings dates and past reactions are settled sessions.