AMPH (Amphastar Pharmaceuticals Inc.) historical data
STOCKListed1-minute bars
| Symbol | AMPH |
|---|---|
| Name | Amphastar Pharmaceuticals Inc. |
| Exchange | NASDAQ |
| Sector | Healthcare |
| Industry | Drug Manufacturers - Specialty & Generic |
| IPO date | 2014-06-25 |
| History | 2014-06-26 to 2026-10-09 (about 12 years) |
| Bar sizes | Daily, hourly, 5-minute and 1-minute |
| Adjustments | Unadjusted, split-adjusted or split-and-dividend-adjusted, chosen on read |
| Survivorship | Included in the survivorship-free universe |
| Free tier | Last 12 months of daily bars |
Price history at a glance
AMPH last closed at $26.62 on 2026-10-09, +6.6% over the past year and +36.8% over five years. Its deepest fall from a prior high in this history was -74.0%, reached on 2026-05-15.
| Last close | $26.62 (2026-10-09) |
|---|---|
| 1-year change | +6.6% |
| 5-year change | +36.8% |
| Annualized since 2014-06-26 | +8.3% |
| 52-week range | $16.87 – $29.40 |
| Deepest drawdown | -74.0% (2026-05-15) |
| Avg. daily dollar volume (3 months) | $10.7m |
| Daily bars in history | 3,091 |
Split- and dividend-adjusted closes. Computed by FinzData from its own daily bars.
Institutional ownership (13F, 2026Q2)
| Managers holding | 210 |
|---|---|
| Shares held | 28,333,453 ($572.4m reported value) |
| Quarter flows | 33 new, 64 added, 75 trimmed, 38 exited; -4,013,411 shares vs the prior quarter |
From SEC Form 13F filings. Every holder, line by line, and the full history since 2013: yf.Client().holders("AMPH") on the look-back bundles. Top holders of AMPH · All 13F managers
Get it in Python
import finzdata as yf
df = yf.Ticker("AMPH").history(start="2014-06-26", interval="1d")
df.tail()