Amphastar Pharmaceuticals, Inc. (AMPH) Stock Price History
Historical prices from 2014 to 2026
- 1M
- +0.7%
- 3M
- +33.2%
- YTD
- -5.0%
- 1Y
- +1.7%
- 3Y
- -17.5%
- 5Y
- +5.6%
Loading 10-year price history...
AMPH Historical Performance
AMPH Annual Returns
Year-by-year price performance · 2014–2026
- 2014 annual price return
- +32.7%
- 2015 annual price return
- +20.2%
- 2016 annual price return
- +34.5%
- 2017 annual price return
- +4.0%
- 2018 annual price return
- +3.8%
- 2019 annual price return
- -2.4%
- 2020 annual price return
- +3.9%
- 2021 annual price return
- +15.6%
- 2022 annual price return
- +21.5%
- 2023 annual price return
- +119.3%
- 2024 annual price return
- -40.4%
- 2025 annual price return
- -26.3%
- 2026 annual price return
- +0.6%
AMPH Stock Price Trajectory (2014–2026)
As of October 24, 2026, Amphastar Pharmaceuticals, Inc. (AMPH) trades at $25.14, representing a +1.7% return over the past year. The stock has delivered a +31.6% total return over five years (+5.6% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $67.66 on August 9, 2023. From this peak, AMPH has corrected -62.8%, currently trading 13% above its 200-day moving average, indicating continued institutional support.
When compared to Healthcare sector peers LNTH (+76.6% 1Y), PCRX (+68.1% 1Y), and PRGO (-25.8% 1Y), AMPH has underperformed the peer group average. Compare AMPH vs LNTH →
AMPH Historical Price Data · from 2014
Rows 1–50 of 3,102| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-10-23 | 25.91 | 25.91 | 24.62 | 25.14 | 482K | -3.46% |
| 2026-10-22 | 26.25 | 26.50 | 25.92 | 26.04 | 315K | -0.61% |
| 2026-10-21 | 25.69 | 26.35 | 25.51 | 26.20 | 390K | +1.00% |
| 2026-10-20 | 26.24 | 26.61 | 25.82 | 25.94 | 361K | -0.77% |
| 2026-10-19 | 25.63 | 26.31 | 25.63 | 26.14 | 300K | +1.04% |
| 2026-10-16 | 26.61 | 26.61 | 25.52 | 25.87 | 352K | -2.08% |
| 2026-10-15 | 26.38 | 27.10 | 26.13 | 26.42 | 352K | +1.30% |
| 2026-10-14 | 25.89 | 26.57 | 25.89 | 26.08 | 365K | +0.12% |
| 2026-10-13 | 26.91 | 27.00 | 26.03 | 26.05 | 327K | -2.65% |
| 2026-10-12 | 26.62 | 26.86 | 26.51 | 26.76 | 363K | +0.53% |
| 2026-10-09 | 25.73 | 26.79 | 25.65 | 26.62 | 438K | +3.14% |
| 2026-10-08 | 25.39 | 26.14 | 25.10 | 25.81 | 424K | +1.06% |
| 2026-10-07 | 25.91 | 26.17 | 25.29 | 25.54 | 776K | -1.43% |
| 2026-10-06 | 25.54 | 26.13 | 25.03 | 25.91 | 469K | +2.13% |
| 2026-10-05 | 25.43 | 25.70 | 25.17 | 25.37 | 455K | -0.24% |
| 2026-10-02 | 25.46 | 25.55 | 25.06 | 25.43 | 374K | +0.32% |
| 2026-10-01 | 25.60 | 26.02 | 25.30 | 25.35 | 531K | -1.78% |
| 2026-09-30 | 26.73 | 26.79 | 25.77 | 25.81 | 509K | -3.26% |
| 2026-09-29 | 27.59 | 27.64 | 26.52 | 26.68 | 632K | -2.59% |
| 2026-09-28 | 25.99 | 27.80 | 25.96 | 27.39 | 752K | +4.82% |
| 2026-09-25 | 26.25 | 26.63 | 25.66 | 26.13 | 377K | -0.53% |
| 2026-09-24 | 24.81 | 26.31 | 24.65 | 26.27 | 572K | +5.25% |
| 2026-09-23 | 24.39 | 25.12 | 24.20 | 24.96 | 508K | +2.63% |
| 2026-09-22 | 24.60 | 24.83 | 24.00 | 24.32 | 522K | -0.65% |
| 2026-09-21 | 23.54 | 25.41 | 23.45 | 24.48 | 596K | +3.64% |
| 2026-09-18 | 23.69 | 23.99 | 23.51 | 23.62 | 1.46M | -0.84% |
| 2026-09-17 | 24.08 | 24.18 | 23.50 | 23.82 | 466K | -0.54% |
| 2026-09-16 | 23.64 | 24.39 | 23.49 | 23.95 | 504K | +1.31% |
| 2026-09-15 | 23.75 | 23.94 | 23.56 | 23.64 | 354K | -1.13% |
| 2026-09-14 | 23.84 | 24.28 | 23.56 | 23.91 | 475K | +0.55% |
| 2026-09-11 | 23.65 | 23.80 | 23.24 | 23.78 | 411K | +1.02% |
| 2026-09-10 | 23.00 | 23.69 | 22.76 | 23.54 | 515K | +2.17% |
| 2026-09-09 | 22.84 | 23.07 | 22.57 | 23.04 | 352K | +0.48% |
| 2026-09-08 | 22.82 | 23.14 | 22.30 | 22.93 | 460K | -1.08% |
| 2026-09-04 | 23.47 | 23.74 | 23.07 | 23.18 | 650K | -2.77% |
| 2026-09-03 | 23.88 | 23.92 | 23.04 | 23.84 | 470K | +0.42% |
| 2026-09-02 | 23.05 | 23.83 | 23.03 | 23.74 | 457K | +3.40% |
| 2026-09-01 | 22.59 | 23.05 | 22.59 | 22.96 | 551K | +1.91% |
| 2026-08-31 | 21.86 | 22.65 | 21.52 | 22.53 | 274K | +2.36% |
| 2026-08-28 | 21.88 | 22.15 | 21.69 | 22.01 | 225K | +0.59% |
| 2026-08-27 | 21.69 | 21.97 | 21.63 | 21.88 | 260K | -0.64% |
| 2026-08-26 | 21.86 | 22.44 | 21.72 | 22.02 | 396K | +0.18% |
| 2026-08-25 | 21.50 | 22.07 | 21.41 | 21.98 | 284K | +2.14% |
| 2026-08-24 | 21.60 | 21.81 | 21.26 | 21.52 | 210K | -0.37% |
| 2026-08-21 | 21.64 | 22.20 | 21.44 | 21.60 | 377K | -0.37% |
| 2026-08-20 | 21.38 | 21.76 | 21.24 | 21.68 | 339K | -0.28% |
| 2026-08-19 | 21.64 | 21.99 | 21.15 | 21.74 | 411K | +1.87% |
| 2026-08-18 | 21.11 | 21.59 | 21.08 | 21.34 | 412K | +2.30% |
| 2026-08-17 | 20.90 | 21.23 | 20.77 | 20.86 | 534K | -0.24% |
| 2026-08-14 | 20.02 | 21.07 | 19.89 | 20.91 | 306K | +3.62% |
AMPH Chart Terminal
Live VCP patterns, Cup & Handle overlays, support/resistance, and AI trade plans.
Live Breakouts Feed
High-probability breakout stocks crossing their pivot across 5 pattern engines.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
Peer Comparison
Compare growth, multiples, and margins vs sector.
AMPH — Frequently Asked Questions
Quick answers to the most common questions about buying AMPH stock.
How has AMPH stock performed recently?
AMPH returned +1.7% over the past year, beating its 5-year annualized CAGR of +5.6%. The stock trades above its 200-day moving average, confirming the uptrend.
What is AMPH's all-time high price?
Amphastar Pharmaceuticals, Inc. reached $67.66 on 2023-08-09. The 52-week high is $29.52. Current 1-year return of +1.7% places the stock closer to historical peaks.
Where can I download AMPH historical price data?
This page provides AMPH daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2014-2026, downloadable in CSV format.