Amphastar Pharmaceuticals, Inc. (AMPH) Stock Price History
Historical prices from 2014 to 2026
- 1M
- +3.6%
- 3M
- -2.4%
- YTD
- -24.1%
- 1Y
- -12.2%
- 3Y
- -28.9%
- 5Y
- -0.3%
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
- -23.5%
AMPH Stock Price Trajectory (2014–2026)
As of July 8, 2026, Amphastar Pharmaceuticals, Inc. (AMPH) trades at $20.08, representing a -12.2% return over the past year. The stock has delivered a -1.3% total return over five years (-0.3% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $67.66 on August 9, 2023. From this peak, AMPH has corrected -70.3%, currently trading 15% below its 200-day moving average, suggesting potential weakness.
When compared to Healthcare sector peers LNTH (+30.6% 1Y), PCRX (+11.2% 1Y), and PRGO (-58.2% 1Y), AMPH has underperformed the peer group average. Compare AMPH vs LNTH →
AMPH Historical Price Data · from 2014
Rows 1–50 of 3,026| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-07-07 | 20.06 | 20.28 | 19.74 | 20.08 | 445K | +2.40% |
| 2026-07-06 | 19.48 | 19.73 | 19.08 | 19.61 | 308K | -0.15% |
| 2026-07-02 | 20.35 | 20.35 | 19.63 | 19.64 | 294K | -2.29% |
| 2026-07-01 | 20.32 | 20.54 | 19.91 | 20.10 | 408K | -0.40% |
| 2026-06-30 | 20.48 | 20.48 | 19.88 | 20.18 | 392K | -2.56% |
| 2026-06-29 | 21.23 | 21.23 | 19.66 | 20.71 | 701K | -4.91% |
| 2026-06-26 | 21.01 | 21.80 | 20.88 | 21.78 | 0 | +3.52% |
| 2026-06-25 | 21.00 | 21.72 | 20.85 | 21.04 | 460K | +0.10% |
| 2026-06-24 | 19.77 | 21.09 | 19.77 | 21.02 | 686K | +7.63% |
| 2026-06-23 | 18.70 | 19.58 | 18.50 | 19.53 | 648K | +6.55% |
| 2026-06-22 | 18.75 | 18.89 | 18.22 | 18.33 | 721K | -2.55% |
| 2026-06-18 | 19.51 | 19.66 | 18.71 | 18.81 | 1.26M | -3.09% |
| 2026-06-17 | 19.94 | 20.26 | 19.15 | 19.41 | 992K | -2.80% |
| 2026-06-16 | 19.91 | 20.41 | 19.61 | 19.97 | 719K | +1.32% |
| 2026-06-15 | 20.11 | 20.29 | 19.59 | 19.71 | 91K | -1.89% |
| 2026-06-12 | 19.90 | 20.55 | 19.90 | 20.09 | 377K | -2.14% |
| 2026-06-11 | 20.32 | 20.64 | 20.10 | 20.53 | 455K | +1.18% |
| 2026-06-10 | 20.38 | 20.75 | 19.98 | 20.29 | 384K | +0.64% |
| 2026-06-09 | 19.74 | 20.27 | 19.68 | 20.16 | 496K | +3.97% |
| 2026-06-08 | 19.75 | 19.84 | 19.34 | 19.39 | 527K | -1.77% |
| 2026-06-05 | 19.13 | 20.14 | 19.07 | 19.74 | 737K | +5.56% |
| 2026-06-04 | 18.28 | 18.89 | 18.28 | 18.70 | 385K | +3.20% |
| 2026-06-03 | 18.26 | 18.34 | 17.73 | 18.12 | 492K | -1.79% |
| 2026-06-02 | 18.36 | 18.67 | 18.10 | 18.45 | 352K | +0.16% |
| 2026-06-01 | 18.78 | 18.99 | 18.23 | 18.42 | 525K | -2.28% |
| 2026-05-29 | 19.28 | 19.42 | 18.55 | 18.85 | 768K | -2.33% |
| 2026-05-28 | 19.04 | 19.54 | 19.02 | 19.30 | 601K | +1.05% |
| 2026-05-27 | 19.11 | 19.32 | 18.56 | 19.10 | 485K | +1.54% |
| 2026-05-26 | 18.45 | 19.12 | 18.45 | 18.81 | 665K | +2.17% |
| 2026-05-22 | 18.25 | 18.44 | 17.93 | 18.41 | 474K | +1.38% |
| 2026-05-21 | 17.93 | 18.37 | 17.75 | 18.16 | 1.59M | +0.44% |
| 2026-05-20 | 17.82 | 18.16 | 17.70 | 18.08 | 850K | +1.46% |
| 2026-05-19 | 17.28 | 17.91 | 17.00 | 17.82 | 614K | +3.60% |
| 2026-05-18 | 16.86 | 17.31 | 16.64 | 17.20 | 854K | +1.96% |
| 2026-05-15 | 17.30 | 17.53 | 16.75 | 16.87 | 673K | -2.49% |
| 2026-05-14 | 17.81 | 18.08 | 17.27 | 17.30 | 708K | -5.57% |
| 2026-05-13 | 17.50 | 18.55 | 17.43 | 18.32 | 965K | +4.69% |
| 2026-05-12 | 18.41 | 18.61 | 17.26 | 17.50 | 1.17M | -5.15% |
| 2026-05-11 | 19.29 | 19.41 | 18.33 | 18.45 | 1.19M | -2.89% |
| 2026-05-08 | 18.57 | 19.52 | 18.28 | 19.00 | 1.95M | -20.93% |
| 2026-05-07 | 24.19 | 24.34 | 23.88 | 24.03 | 361K | +0.54% |
| 2026-05-06 | 23.65 | 24.15 | 23.59 | 23.90 | 370K | +2.18% |
| 2026-05-05 | 22.85 | 23.46 | 22.82 | 23.39 | 138K | +2.86% |
| 2026-05-04 | 21.82 | 23.22 | 21.71 | 22.74 | 484K | +3.93% |
| 2026-05-01 | 21.98 | 22.26 | 21.64 | 21.88 | 300K | -0.36% |
| 2026-04-30 | 21.83 | 22.36 | 21.57 | 21.96 | 294K | +1.53% |
| 2026-04-29 | 21.50 | 21.86 | 21.48 | 21.63 | 245K | -0.87% |
| 2026-04-28 | 21.71 | 22.04 | 21.56 | 21.82 | 272K | +0.79% |
| 2026-04-27 | 21.56 | 22.06 | 21.50 | 21.65 | 255K | +1.12% |
| 2026-04-24 | 21.05 | 21.61 | 20.83 | 21.41 | 397K | +1.90% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
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 declined -12.2% over the past year, below its 5-year annualized CAGR of -0.3%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is AMPH's all-time high price?
Amphastar Pharmaceuticals, Inc. reached $67.66 on 2023-08-09. The 52-week high is $31.26. Current 1-year return of -12.2% places the stock further from 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.