AMBAAmbarella, Inc.

$67.43-19% 1Y

What is the market doing?

Mixed

No clear lean: nothing decisive, though heavily shorted (+13% of shares).

1 to watch, 2 neutral
TrendRangeboundderived · Oct 9, 2026

Rangebound, no clear trend. Price is −1% vs its 200-day average.

Insider conviction−$1.1M (90 days to Oct 8, 2026)SEC EDGAR · Oct 8, 2026

Insiders were net sellers over the 90 days ending Oct 8, 2026; selling is often routine (taxes, diversification).

Short interest13% of sharesFINRA · Sep 15, 2026

Heavily shorted, settled Sep 15, 2026, a few days of normal trading to cover. Up 31% since the previous count, up from 6.6% of shares outstanding three months ago.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

1-year returnbehind 78% of the market
vs 200-day avgmiddle of the market

Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.

How AMBA is trading

Ambarella, Inc. is −19% over the past year while the S&P 500 is +18%: 37 points behind the market.

−19%

1-year return · S&P 500 +18%

vs 200-day average
−0.66%

vs 200-day average · below trend, but not far

RSI (14)
47

RSI (14) · neutral

Below its 52-week high
29%

Below its 52-week high

Sep 18, 2024$40.30 – $95.51 · dashed line: 200-day averageOct 9, 2026
Details›
Last close2026-10-09
$67.43
1 monthS&P 500 +2.7%
−0.82%
1 yearS&P 500 +18%
−19%
5 yearsS&P 500 +88%
−54%
vs 50-day average$71.37
−5.5%
52-week high
$95.51
52-week low
$48.65
Annualised volatility
67%
Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
−$3.7M
Calendar-year price return
YearReturn
2026 (year to date)−4.8%
2025−2.6%
2024+19%
2023−25%
2022−59%
2021+121%
2020+52%
2019+73%
2018−40%
2017+8.5%
Average return by calendar month, 2016–2026
MonthYearsPositiveAverage
Jan104 of 10−5.4%
Feb106 of 10+2.5%
Mar102 of 10−11%
Apr104 of 10−0.29%
May109 of 10+5.7%
Jun104 of 10−3.5%
Jul117 of 11+5.5%
Aug118 of 11+5.1%
Sep116 of 11+1.6%
Oct114 of 11−2.0%
Nov107 of 10+14%
Dec107 of 10+3.7%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.

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