AMBA

Ambarella, Inc.
66.27 -1.27% 2026-10-28

Last 90d 3 insider sales

52-week range
48.30 96.69
1-month-3.6%
3-month-10.6%
1-year-23.4%
3-year+36.9%
5-year-61.9%
vs 50-day-1.3%
vs 200-day-1.8%
Volatility74%
Beta2.67
$ vol/day$91M
ATH227.59
From ATH-70.9%
Next report2026-12-01
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2026AprJulOct

bought sold · bigger dot, bigger trade · follows the chart’s range

WhenPeople SizeValuePrice
1mo sched 1 $17,690 70.07
1mo sched 1 $127,563 68.06
1mo sell 4 $915,011 66.31
4mo sell 1 $468,656 77.56
4mo sell 1 $888,400 84.08
4mo sched 1 $1,463,800 84.08
4mo sched 1 $15,502 78.04
4mo sell 3 $758,244 68.16
4mo sched 1 $339,946 68.16
4mo sell 1 $660,943 69.09
5mo sched 2 $2,996,186 91.12
6mo sched 1 $118,260 60.75
7mo sell 4 $2,763,417 54.45
8mo sched 1 $3,039,906 57.51
9mo sell 1 $558,136 67.85
10mo sell 1 $584,082 75.00
10mo sell 1 $264,755 70.68
10mo sell 1 $36,090 70.62
10mo sell 4 $1,086,505 71.50
10mo sell 1 $45,165 71.70
1.0y sell 1 $909,473 82.84
1.1y sell 1 $227,452 83.31
1.1y sell 5 $1,021,311 82.93
1.1y sell 1 $716,895 81.48
1.3y sched 1 $62,580 68.31
1.4y sell 6 $620,744 52.77
1.6y sell 1 $27,750 54.39
1.6y sell 6 $542,607 55.20
1.6y sell 6 $765,147 53.16
1.8y sell 1 $153,110 79.93
1.8y sell 1 $223,300 74.14
1.8y sell 1 $231,360 75.00
1.8y sell 1 $97,391 76.61
1.8y sell 1 $148,380 76.90
1.8y sell 1 $110,700 74.27
1.9y sell 2 $88,150 69.30
1.9y sell 6 $845,120 72.02
1.9y sell 1 $27,955 75.29
1.9y sell 1 $387,471 72.94
1.9y sell 1 $91,518 71.22
2.1y sell 1 $168,432 57.31
2.1y sched 1 $26,855 55.89
2.1y sell 1 $49,978 54.45
2.1y sell 6 $592,741 55.50
2.1y sell 1 $12,758 54.70
2.1y sell 1 $1,975,300 52.83
2.1y sell 1 $343,230 54.71
2.3y sell 1 $86,817 60.08
2.3y sell 1 $317,400 52.81
2.3y sell 1 $494,217 55.55
2.4y sell 7 $561,365 55.89
2.4y sell 1 $239,352 57.03
2.6y sell 1 $11,873 51.28
2.6y sell 6 $354,054 49.66
2.6y sell 6 $237,900 56.04
2.8y sched 1 $31,570 62.94
2.9y sell 7 $751,034 62.42
2.9y sell 1 $473,290 57.58
3.1y sell 6 $621,533 55.81
3.1y sell 1 $45,509 57.47
3.3y sell 1 $188,512 82.84
3.3y sell 1 $347,774 81.85
3.4y sell 6 $922,539 84.09
3.4y sched 1 $113,546 84.09
3.4y sell 1 $260,820 87.06
3.4y sell 1 $355,609 84.78
3.4y sell 1 $344,112 83.25
3.4y sell 1 $689,971 78.02
3.5y sell 1 $254,457 68.22
3.6y sell 7 $4,269,918 76.76
3.6y sell 2 $130,120 78.41
3.9y sell 1 $162,320 81.20
3.9y sell 6 $1,129,853 80.22
3.9y sell 1 $211,883 86.21
4.1y sell 1 $364,252 58.80
4.1y sell 6 $654,054 63.73
4.4y sell 6 $721,419 67.86
4.4y sell 1 $55,425 69.75
4.6y sell 2 $858,772 105.42
4.6y sell 8 $14,295,026 97.20
4.6y sell 6 $770,923 84.14
4.6y buy 1 $1,014,913 87.72
4.7y sell 1 $1,864,721 90.66
4.8y sell 1 $221,905 181.73
4.8y sell 1 $110,475 211.31
4.8y sell 2 $232,832 206.20
4.9y sell 1 $158,599 195.70
4.9y sell 6 $3,572,362 180.82
4.9y sell 1 $1,739,880 209.86
4.9y sell 3 $1,079,409 213.99
4.9y sell 7 $5,793,712 214.55
5.1y sell 1 $586,560 164.29
5.1y sell 1 $560,000 147.32
5.1y sell 1 $1,333,036 135.41
5.1y sell 1 $97,476 136.50
5.2y sell 1 $480,000 134.87
5.3y sell 3 $804,372 105.93
5.4y sell 4 $1,799,064 101.25
5.4y sell 1 $148,260 101.45
5.4y sell 1 $146,544 99.58
5.6y sell 1 $28,449 103.46
5.6y sell 4 $8,698,444 107.25
5.6y sell 1 $929,393 111.44
5.6y sell 5 $612,968 116.47
5.7y sell 1 $2,550,062 121.02
2026AprJulOct

bought sold · bigger dot, bigger trade · follows the chart’s range

DSDonna Shalala 2B1S 7.4y BCBarbara J. Comstock 1S 11.4y

2 members · 2 buys / 2 sells · $4K–$60K disclosed · latest filing Apr 27, 2020 · full tracker ›

WhenMemberSize AmountPrice then
7.4y sell DS Donna Shalala $1K–$15K 43.87
7.5y buy DS Donna Shalala $1K–$15K 48.57
7.5y buy DS Donna Shalala $1K–$15K 49.32
11.4y sell BC Barbara J. Comstock $1K–$15K 119.35

Next report 2026-12-01 (Tuesday, after close, in 33 days) · EPS estimate 0.31. It has finished the next session higher 45% of the time, average move 9.8%.

Day-after move, last 12 reports, oldest left.

ReportedEst.Actual SurpriseGapDay 1Day 5
2026-09-03 beat 0.17 0.18 +5.3% -0.3% -0.8% +0.9%
2026-05-28 beat 0.10 0.11 +5.4% -10.1% -21.4% -30.8%
2026-02-26 beat 0.10 0.13 +26.7% -13.9% -14.9% -26.1%
2025-11-25 beat 0.21 0.27 +29.6% -12.1% -18.8% -21.9%
2025-08-28 beat 0.05 0.15 +177.1% +18.2% +16.8% +18.9%
2025-05-29 beat 0.04 0.07 +83.1% -4.7% -15.1% -13.6%
2025-02-26 beat -0.02 0.11 +651.4% +7.0% -17.1% -29.4%
2024-11-26 beat 0.04 0.11 +214.2% +16.6% +5.9% +1.3%
2024-08-27 beat -0.19 -0.13 +32.5% +20.3% +10.6% +2.5%
2024-05-30 beat -0.31 -0.26 +16.9% +20.1% +20.6% +17.8%
2024-02-27 beat -0.33 -0.24 +26.9% +12.1% +0.1% -3.5%
2023-11-30 beat -0.39 -0.28 +28.3% +3.5% -0.3% -1.5%
2023-08-29 beat -0.18 -0.15 +18.9% -22.8% -20.4% -20.3%
2023-05-30 beat -0.21 -0.15 +27.3% -16.2% -11.8% -1.8%
2023-02-28 beat 0.15 0.23 +54.9% -7.5% -11.5% -11.9%
2022-12-01 beat 0.20 0.24 +20.9% -6.0% +3.3% +5.6%
2022-08-30 beat 0.19 0.20 +3.2% -9.3% -19.7% -19.0%
2022-05-31 beat 0.37 0.44 +19.5% -6.4% -2.1% -3.0%
2022-02-28 beat 0.42 0.45 +6.2% -20.4% -31.3% -36.6%
2021-11-30 beat 0.49 0.57 +16.6% +14.8% +14.1% +20.8%
2021-08-31 beat 0.25 0.35 +41.4% +12.7% +27.4% +41.3%
2021-06-01 beat 0.17 0.23 +32.9% +2.4% -1.5% -4.8%
2021-03-02 beat 0.08 0.14 +74.5% +5.8% -0.3% -1.9%
2020-11-23 beat 0.05 0.09 +67.2% +6.9% +15.3% +29.1%
2020-09-01 beat -0.02 0.06 +343.7% +1.7% -3.2% -16.0%
2020-06-02 beat -0.01 0.04 +433.3% -5.5% -13.9% -11.2%
2020-03-03 beat 0.11 0.14 +22.2% +7.0% -5.0% -24.3%
2019-11-25 beat 0.21 0.32 +55.8% +4.0% -7.3% -9.4%
2019-08-29 beat 0.02 0.21 +755.4% +18.1% +17.9% +37.1%
2019-06-04 beat -0.06 0.01 +117.7% +7.0% +0.1% +6.0%
2019-03-05 beat 0.04 0.14 +257.4% +9.3% +3.7% +8.0%
2018-11-29 beat 0.09 0.21 +129.1% +14.1% +18.5% +14.6%
2018-08-30 beat 0.13 0.25 +90.7% -12.5% -3.6% -2.7%
2018-06-05 beat 0.09 0.13 +49.4% -10.0% -12.9% -12.5%
2018-03-01 beat 0.37 0.45 +21.6% +2.9% +13.5% +18.9%
2017-11-30 beat 0.67 0.75 +12.8% +8.5% +14.3% +8.7%
2017-08-31 beat 0.44 0.48 +9.3% -15.6% -22.4% -18.0%
2017-06-06 beat 0.36 0.39 +8.1% -5.2% -10.2% -17.2%
2017-02-28 beat 0.75 0.92 +23.2% +2.7% -4.4% -8.4%
2016-12-01 beat 0.94 1.11 +18.0% -7.2% -11.3% -11.3%
2016-09-01 beat 0.38 0.54 +43.8% -2.1% -6.7% -7.6%
2016-06-02 beat 0.28 0.34 +22.6% +9.2% +9.4% +21.0%
2016-03-03 beat 0.45 0.64 +40.8% -7.4% -8.9% -15.2%
2015-12-03 beat 0.86 1.08 +25.4% -5.5% -1.6% -0.4%
2015-09-01 beat 0.81 0.88 +9.3% -7.8% -8.5% -21.7%
2015-06-02 beat 0.58 0.71 +21.6% +3.2% +3.7% +22.5%
2015-03-03 beat 0.49 0.68 +37.9% +6.2% +7.0% +7.2%
2014-12-04 beat 0.54 0.68 +25.0% -3.3% -1.7% -16.7%
2014-09-04 beat 0.28 0.37 +32.7% +7.3% +3.2% +3.1%
2014-06-03 beat 0.21 0.25 +17.6% +3.7% +0.9% +8.7%
2014-03-06 beat 0.19 0.26 +36.8% -2.6% -7.4% -18.0%
2013-12-05 beat 0.29 0.37 +27.6% +5.1% +3.1% +3.5%
2013-09-05 beat 0.19 0.26 +35.1% +10.7% +8.6% +16.2%
2013-06-04 beat 0.13 0.21 +55.8% +7.2% +2.8% +5.3%
2013-03-07 beat 0.13 0.18 +38.5% +12.4% +13.5% +12.7%
2012-12-05 beat 0.25 0.31 +24.0% +0.7% +1.1% +4.1%
Model view — historical tendencies for the days ahead, not a forecast
Next 1 day
-0.4%
Next 1 week
+2.5%
Next 1 month
+7.4%
Seasonality
Bullish window historically
Next 30 days (to Nov 28): +15.3% median, 85% of the last 13 years finished up.
20-year seasonality chart →
Mean reversion
Neutral — RSI(2) at 42
RSI(2) under 15 is oversold (this name has historically bounced); over 85 is overbought. Its dip-buy edge in history is +0.10%/day.
Mean-reversion stats →
1-month breakdown — Market · β 2.67 +7.0% · Seasonal tilt +0.4%
$91M/day volume 74% volatility -23% 1-year -71% from ATH
52-week range · 37% of the way up · -32% from the high
$48.30$96.69

Not investment advice.