AMPH

Amphastar Pharmaceuticals, Inc.
27.03 -2.49% 2026-11-02

Last 90d 5 insider sales

52-week range
16.65 29.52
1-month+6.3%
3-month+35.8%
1-year+9.6%
3-year-39.9%
5-year+41.5%
vs 50-day+8.7%
vs 200-day+21.5%
Volatility52%
Beta0.52
$ vol/day$11M
ATH67.66
From ATH-60.1%
Next report2026-11-05
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2026AprJulOct

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

WhenPeople SizeValuePrice
1mo sched 1 $103,475 24.66
2mo sell 1 $239,404 23.84
2mo sell 1 $75,306 23.48
3mo sell 1 $161,852 19.91
3mo sched 1 $183,886 20.29
11mo sell 1 $256,419 26.27
11mo sell 1 $107,505 26.03
11mo sell 1 $113,251 27.33
12mo sell 1 $441,827 26.12
12mo sched 1 $12,635 25.36
1.1y sched 1 $13,600 26.75
1.2y sched 1 $15,490 30.20
1.2y sched 1 $10,415 21.16
1.3y sched 1 $11,735 23.34
1.4y sched 1 $12,835 26.16
1.5y sched 1 $12,040 24.44
1.6y sched 1 $14,190 27.66
1.7y sched 1 $27,990 28.73
1.7y sched 1 $116,522 27.88
1.9y sell 1 $672,850 41.60
1.9y sell 1 $437,700 43.96
2.0y sell 2 $580,930 46.69
2.0y sched 2 $657,912 47.78
2.1y sell 1 $144,780 48.64
2.2y sell 1 $139,410 45.60
2.2y sell 1 $193,400 48.27
2.2y sell 1 $736,540 43.30
2.3y sched 1 $454,773 41.61
2.4y sched 1 $147,176 40.23
2.4y sell 1 $124,200 41.36
2.4y sched 1 $21,325 42.16
2.5y sched 1 $20,835 42.61
2.6y sched 1 $21,715 42.61
2.7y sched 1 $842,967 46.24
2.7y sell 1 $589,712 46.89
2.7y sched 1 $22,846 46.23
2.8y sched 1 $26,550 52.83
2.8y sched 1 $7,171,779 53.48
2.8y sched 1 $12,798,447 55.41
2.8y sched 1 $30,682 62.00
2.9y sell 1 $462,195 58.69
2.9y sched 1 $28,952 59.60
3.0y sell 1 $223,440 55.97
3.0y sched 1 $3,298,294 56.52
3.0y sell 2 $493,338 56.73
3.0y sched 1 $22,650 45.57
3.1y sched 1 $22,890 44.77
3.2y sched 1 $3,143,480 50.74
3.2y sell 1 $1,530,994 53.36
3.2y sell 1 $105,000 53.32
3.2y sell 2 $968,985 57.75
3.4y sell 1 $258,950 54.75
3.4y sched 1 $1,874,790 54.75
3.4y sell 1 $241,200 47.63
3.4y sell 1 $750,889 46.03
3.4y sched 1 $509,850 46.03
3.5y sched 1 $465,675 43.96
3.5y sell 2 $640,981 44.06
3.5y sell 1 $215,650 43.81
3.5y sell 1 $64,725 42.71
3.5y sell 2 $744,150 42.30
3.5y sched 1 $238,515 42.45
3.6y sched 2 $683,908 41.53
3.6y sell 2 $604,791 39.68
3.6y sched 1 $18,521 38.16
3.6y sell 1 $465,430 36.72
3.7y sell 1 $398,685 36.69
3.7y sell 1 $18,350 36.49
3.8y sell 1 $15,175 30.80
3.8y sell 1 $13,970 28.20
3.9y sell 1 $15,065 30.04
4.0y sell 1 $15,565 30.64
4.1y sell 1 $14,295 28.70
4.2y sell 1 $14,720 29.45
4.2y sell 2 $692,645 32.53
4.3y sell 1 $18,740 37.39
4.3y sell 1 $56,590 37.14
4.3y sell 1 $397,062 37.11
4.3y sell 1 $55,151 36.11
4.3y sell 1 $63,455 35.21
4.3y sell 2 $197,500 34.68
4.3y sell 1 $642,591 34.91
4.4y sell 1 $176,660 31.84
4.4y sell 1 $388,897 39.63
4.4y sell 1 $18,501 37.42
4.4y sell 1 $349,300 35.49
4.5y sell 1 $364,336 34.56
4.5y sell 1 $3,697,869 34.06
4.5y sell 1 $347,836 33.78
4.5y sell 1 $4,234,918 34.80
4.5y sell 1 $366,463 35.67
4.5y sell 1 $10,379 35.11
4.6y sell 1 $18,343 37.45
4.6y sell 1 $1,724,480 34.41
4.6y sell 3 $949,534 34.77
4.7y sell 1 $382,313 30.14
4.7y sell 3 $1,049,572 27.49
4.7y sell 2 $456,890 26.45
4.8y sell 1 $12,043 24.67
4.8y sell 2 $1,713,289 25.46
4.8y sell 2 $245,610 23.05
4.9y sell 1 $22,500 22.76
4.9y sell 1 $184,934 22.37
4.9y sell 1 $39,066 21.92
4.9y sell 1 $113,016 21.41
4.9y sell 1 $106,100 21.23
5.0y sell 2 $382,608 21.34
5.2y sell 1 $127,497 19.16
5.3y sell 1 $193,773 21.05
5.3y sell 1 $188,822 21.41
5.3y sell 1 $125,220 20.62
5.3y sell 1 $106,697 20.38
5.3y sell 1 $630,795 20.05
5.3y sell 1 $203,700 20.10
5.4y sell 1 $250,854 19.73
5.4y sell 3 $798,829 19.27
5.4y sell 1 $186,500 18.72
5.4y sell 1 $497,945 18.99
5.4y sell 1 $197,400 19.80
5.5y sell 1 $256,109 19.80

Next report 2026-11-05 (Thursday, after close, in 2 days) · EPS estimate 0.86. It has finished the next session higher 53% of the time, average move 8.2%.

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

ReportedEst.Actual SurpriseGapDay 1Day 5
2026-08-06 beat 0.61 0.91 +48.3% +13.5% +4.9% +5.6%
2026-05-07 miss 0.71 0.42 -40.5% -22.7% -20.9% -29.8%
2026-02-26 miss 0.92 0.73 -20.5% -15.3% -23.6% -27.0%
2025-11-06 beat 0.83 0.93 +12.7% +7.9% -0.8% +7.6%
2025-08-07 beat 0.74 0.85 +14.6% +3.1% +10.1% +38.0%
2025-05-07 beat 0.69 0.74 +7.6% +0.7% +0.9% -0.5%
2025-02-27 miss 0.94 0.92 -1.9% -3.1% -9.7% -8.5%
2024-11-06 miss 0.98 0.96 -2.1% -10.2% -13.7% -15.6%
2024-08-07 beat 0.75 0.94 +25.1% +9.3% +13.3% +16.5%
2024-05-08 beat 0.79 1.04 +32.2% +7.9% +0.5% +1.3%
2024-02-28 miss 0.91 0.88 -3.3% -9.0% -14.9% -14.6%
2023-11-08 beat 0.69 1.15 +66.7% +5.7% +15.4% +23.7%
2023-08-08 beat 0.56 0.65 +16.1% -0.5% -4.3% -13.8%
2023-05-09 beat 0.50 0.62 +25.2% +3.4% +13.0% +17.9%
2023-02-28 beat 0.40 0.73 +82.5% +5.8% +14.8% +11.2%
2022-11-07 miss 0.39 0.38 -3.4% -4.0% -9.4% -5.7%
2022-08-08 beat 0.35 0.39 +12.1% +1.0% -15.1% -13.9%
2022-05-09 beat 0.36 0.47 +30.6% -1.4% +7.1% +13.1%
2022-03-10 beat 0.37 0.42 +13.5% -1.5% +12.6% +12.3%
2021-11-08 beat 0.23 0.46 +100.0% +0.5% +4.1% +6.6%
2021-08-09 beat 0.21 0.21 +0.8% +1.1% +1.2% -4.6%
2021-05-06 beat 0.18 0.27 +46.5% +1.0% +3.5% +10.6%
2021-03-15 beat 0.14 0.16 +16.7% +0.5% -3.7% -6.1%
2020-11-06 beat 0.14 0.15 +7.1% +0.8% -6.9% -6.1%
2020-08-06 beat 0.14 0.16 +17.9% -1.0% -0.6% +0.3%
2020-05-07 beat 0.09 0.17 +98.3% +4.9% +6.8% +3.3%
2020-03-12 miss 0.08 0.07 -6.7% -0.8% +2.3% -8.7%
2019-11-07 beat 0.07 0.10 +50.0% -0.1% -3.7% -9.9%
2019-08-07 beat 0.05 0.08 +53.3% +6.6% +7.0% +6.1%
2019-05-09 beat 0.05 0.10 +85.2% +0.0% -1.0% -3.1%
2019-03-12 beat 0.11 0.13 +18.2% -11.0% -14.4% -13.4%
2018-11-08 beat 0.11 0.12 +9.1% +0.4% +4.2% -0.2%
2018-08-08 miss 0.08 0.03 -62.5% -5.1% -4.4% +0.4%
2018-05-09 miss 0.08 -0.05 -166.7% -4.8% -24.7% -16.5%
2018-03-12 beat 0.07 0.10 +50.0% +0.7% +3.9% -0.7%
2017-11-08 beat 0.03 0.07 +118.8% -4.5% +5.6% +1.9%
2017-08-09 beat 0.07 0.11 +53.5% +2.6% -1.7% -5.2%
2017-05-08 beat 0.08 0.09 +15.4% -6.0% -1.4% +5.7%
2017-03-13 miss 0.04 0.01 -75.0% -5.3% -17.2% -8.3%
2016-11-08 beat 0.08 0.14 +69.7% +4.0% +16.3% +20.4%
2016-08-08 beat 0.04 0.23 +475.0% +11.1% +12.0% +14.5%
2016-05-09 beat -0.03 0.12 +469.2% +1.9% +9.6% +15.3%
2016-03-14 beat -0.04 0.19 +642.9% +7.4% +8.6% +5.0%
2015-11-12 beat -0.08 -0.01 +87.5% -1.0% +13.4% +16.6%
2015-08-12 beat -0.13 -0.09 +30.8% +3.1% -2.0% -8.8%
2015-05-13 beat -0.06 -0.01 +83.3% +0.7% +5.6% +2.7%
2015-03-24 beat -0.06 -0.03 +50.0% +1.1% -5.9% -2.0%
2014-11-12 beat -0.09 -0.07 +19.2% +17.1% +5.8% +4.3%
2014-08-12 beat -0.09 0.02 +121.6% -3.9% -0.5% -1.2%
Model view — historical tendencies for the days ahead, not a forecast
Next 1 day
+0.2%
Next 1 week
+0.8%
Next 1 month
+1.4%
Seasonality
Mildly positive window
Next 30 days (to Dec 3): +4.2% median, 55% of the last 11 years finished up.
20-year seasonality chart →
Mean reversion
Neutral — RSI(2) at 48
RSI(2) under 15 is oversold (this name has historically bounced); over 85 is overbought. Its dip-buy edge in history is +0.01%/day.
Mean-reversion stats →
1-month breakdown — Market · β 0.52 +1.2% · Seasonal tilt (11y) +0.2%
$11M/day volume 52% volatility +10% 1-year -60% from ATH
52-week range · 81% of the way up · -8% from the high
$16.65$29.52

Not investment advice.