AMPH

Amphastar Pharmaceuticals, Inc. $27.03 as of 2026-11-02
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 0.55 +1.3% · 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

Earnings Full history →

Next report 2026-11-05 (Thursday, after close, in 2 days) · EPS est. 0.86.

1-day std dev
10.4%
Finished up
53%
Biggest pop
+16.3%
Biggest drop
-24.7%

Standard deviation of the close-to-close move over the last 49 reports. History, not a forecast.

ReportedEst.Actual SurpriseGap Day 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%

Not investment advice.