AMBAAmbarella, Inc.

$66.60-21% 1Y

What is the market doing?

Mixed

No clear lean: nothing decisive, though heavily shorted (+12% of shares).

1 to watch, 2 neutral
TrendRangeboundderived · Oct 23, 2026

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

Insider conviction−$1.1M (90 days to Oct 22, 2026)SEC EDGAR · Oct 22, 2026

Insiders were net sellers over the 90 days ending Oct 22, 2026; selling is often routine (taxes, diversification).

Short interest12% of sharesFINRA · Sep 30, 2026

Heavily shorted, settled Sep 30, 2026, about a week of normal trading to cover. Down 9.7% since the previous count, up from 7.5% 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 82% 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 −21% over the past year while the S&P 500 is +16%: 37 points behind the market.

−21%

1-year return · S&P 500 +16%

vs 200-day average
−1.4%

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

RSI (14)
48

RSI (14) · neutral

Below its 52-week high
30%

Below its 52-week high

Oct 15, 2024$40.30 – $95.51 · dashed line: 200-day averageOct 23, 2026
Details›
Last close2026-10-23
$66.60
1 monthS&P 500 −0.94%
−4.6%
1 yearS&P 500 +16%
−21%
5 yearsS&P 500 +86%
−56%
vs 50-day average$68.05
−2.1%
52-week high
$95.51
52-week low
$48.65
Annualised volatility
70%
Insider selling, net, 6 monthsForms 3/4/5 to 2026-10-22
$3.7M
Calendar-year price return
YearReturn
2026 (year to date)−6.0%
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%
Jun105 of 10−0.51%
Jul116 of 11+3.0%
Aug118 of 11+5.1%
Sep116 of 11+1.6%
Oct114 of 11−2.1%
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.

Where the price stands

Its trend against the 50-day and 200-day averages, and the levels it keeps coming back to.

What it has returned

With dividends, year by year, month by month, and by calendar month on average.

On our screens:Most shorted stocks