No.2
Disclosure
2026/11/06 06:40
四半期報告書（10-Q）
AMPH Amphastar Pharmaceuticals, Inc.US-listed
2 posts
Amphastar Pharmaceuticals, Inc. (AMPH) at a glance
Prices are from Yahoo! Finance and may be delayed. Always check the latest price before trading.
Amphastar Pharmaceuticals, Inc. (AMPH) Stock Price History
Amphastar Pharmaceuticals, Inc. closed at $28.49 on Nov 6, 2026, +10.0% over 1 month, +18.6% over 1 year.
Price5-day MA25-day MAS&P 500Disclosures
1-Month High$28.49Nov 6
1-Month Low$25.14Oct 23
1-Week Change+2.8%vs Oct 30
1-Month Change+10.0%vs Oct 6
If you had invested $1,000 1 month ago, it would be worth $1,100 today (+10.0%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −5.7%, while this stock moved +10.0%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $28.49 | +0.83 | +3.00% |
| Nov 5 (Thu) | $27.66 | −0.36 | −1.28% |
| Nov 4 (Wed) | $28.02 | +0.90 | +3.32% |
| Nov 3 (Tue) | $27.12 | +0.09 | +0.33% |
| Nov 2 (Mon) | $27.03 | −0.69 | −2.49% |
| Oct 30 (Fri) | $27.72 | +0.79 | +2.93% |
| Oct 29 (Thu) | $26.93 | +0.60 | +2.28% |
| Oct 28 (Wed) | $26.33 | +0.76 | +2.97% |
| Oct 27 (Tue) | $25.57 | +0.10 | +0.39% |
| Oct 26 (Mon) | $25.47 | +0.33 | +1.31% |
Price5-day MA25-day MAS&P 500Disclosures
3-Month High$28.49Nov 6
3-Month Low$19.81Aug 6
1-Month Change+10.0%vs Oct 6
3-Month Change+43.8%vs Aug 6
If you had invested $1,000 3 months ago, it would be worth $1,438 today (+43.8%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −4.3%, while this stock moved +43.8%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $28.49 | +0.83 | +3.00% |
| Nov 5 (Thu) | $27.66 | −0.36 | −1.28% |
| Nov 4 (Wed) | $28.02 | +0.90 | +3.32% |
| Nov 3 (Tue) | $27.12 | +0.09 | +0.33% |
| Nov 2 (Mon) | $27.03 | −0.69 | −2.49% |
| Oct 30 (Fri) | $27.72 | +0.79 | +2.93% |
| Oct 29 (Thu) | $26.93 | +0.60 | +2.28% |
| Oct 28 (Wed) | $26.33 | +0.76 | +2.97% |
| Oct 27 (Tue) | $25.57 | +0.10 | +0.39% |
| Oct 26 (Mon) | $25.47 | +0.33 | +1.31% |
Price25-day MA75-day MAS&P 500Disclosures
6-Month High$28.49Nov 6
6-Month Low$16.87May 15
3-Month Change+43.8%vs Aug 6
6-Month Change+19.2%vs May 6
If you had invested $1,000 6 months ago, it would be worth $1,192 today (+19.2%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +0.2%, while this stock moved +19.2%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $28.49 | +2.8% |
| Oct 2026 | $27.72 | +7.4% |
| Sep 2026 | $25.81 | +14.6% |
| Aug 2026 | $22.53 | +13.0% |
| Jul 2026 | $19.94 | −1.2% |
| Jun 2026 | $20.18 | +7.1% |
| May 2026 | $18.85 | −14.2% |
Price25-day MA75-day MAS&P 500Disclosures
52-Week High$29.40Jan 12
52-Week Low$16.87May 15
Year to Date+6.4%vs Dec 31
From 52-Week High−3.1%Jan 12
If you had invested $1,000 1 year ago, it would be worth $1,186 today (+18.6%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +9.6%, while this stock moved +18.6%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $28.49 | +2.8% |
| Oct 2026 | $27.72 | +7.4% |
| Sep 2026 | $25.81 | +14.6% |
| Aug 2026 | $22.53 | +13.0% |
| Jul 2026 | $19.94 | −1.2% |
| Jun 2026 | $20.18 | +7.1% |
| May 2026 | $18.85 | −14.2% |
| Apr 2026 | $21.96 | +12.1% |
| Mar 2026 | $19.59 | −3.2% |
| Feb 2026 | $20.23 | −23.6% |
| Jan 2026 | $26.49 | −1.1% |
| Dec 2025 | $26.78 | −3.3% |
| Nov 2025 | $27.70 | ― |
Price13-week MA26-week MAS&P 500
3-Year High$62.74Jan 1, 2024
3-Year Low$16.87May 15, 2026
Annualized Return−18.5%
Max Drawdown−73.1%
If you had invested $1,000 3 years ago, it would be worth $542 today (−45.8%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +67.1%, while this stock moved −45.8%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $28.49 | +6.4% |
| 2025 | $26.78 | ― |
Price13-week MA26-week MAS&P 500
5-Year High$62.81Jul 31, 2023
5-Year Low$16.87May 15, 2026
Annualized Return+6.0%
Max Drawdown−73.1%
If you had invested $1,000 5 years ago, it would be worth $1,338 today (+33.8%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +57.5%, while this stock moved +33.8%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $28.49 | +6.4% |
| 2025 | $26.78 | ― |
Price1-year MA2-year MAS&P 500
All-Time High$61.85Dec 2023
All-Time Low$8.88Jul 2014
Total Change+220.8%vs Jul 2014
Annualized Return+9.9%
If you had invested $1,000 in Jul 2014, it would be worth $3,208 today (+220.8%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +268.2%, while this stock moved +220.8%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $28.49 | +6.4% |
| 2025 | $26.78 | −27.9% |
| 2024 | $37.13 | −40.0% |
| 2023 | $61.85 | +120.7% |
| 2022 | $28.02 | +20.3% |
| 2021 | $23.29 | +15.8% |
| 2020 | $20.11 | +4.3% |
| 2019 | $19.29 | −3.1% |
| 2018 | $19.90 | +3.4% |
| 2017 | $19.24 | +4.5% |
| 2016 | $18.42 | +29.4% |
| 2015 | $14.23 | +22.6% |
| 2014 | $11.61 | ― |
Daily, weekly and monthly closes (Yahoo! Finance, split-adjusted, dividends excluded). "All" covers the range Yahoo provides (from Jul 2014). Please check the latest prices before trading.
Recent SEC filings (EDGAR)
- 11/05 16:40 10-Q
- 11/05 16:26 8-K 決算発表（経営成績・財政状態）（Item 2.02）／財務諸表および添付資料（Item 9.01）
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No.1
Disclosure
2026/11/06 06:26
臨時報告（重要事象）（8-K）
決算発表（経営成績・財政状態）（Item 2.02）／財務諸表および添付資料（Item 9.01）
決算発表（経営成績・財政状態）（Item 2.02）／財務諸表および添付資料（Item 9.01）
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