IONS (Ionis Pharmaceuticals Inc.) historical data
STOCKListed1-minute bars
| Symbol | IONS |
|---|---|
| Name | Ionis Pharmaceuticals Inc. |
| Exchange | NASDAQ |
| Sector | Healthcare |
| Industry | Biotechnology |
| IPO date | 1991-05-17 |
| History | 2002-05-09 to 2026-10-09 (about 24 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
IONS last closed at $45.28 on 2026-10-09, -35.6% over the past year and +32.8% over five years. Its deepest fall from a prior high in this history was -75.8%, reached on 2003-03-18.
| Last close | $45.28 (2026-10-09) |
|---|---|
| 1-year change | -35.6% |
| 5-year change | +32.8% |
| Annualized since 2002-05-09 | +5.8% |
| 52-week range | $43.50 – $86.50 |
| Deepest drawdown | -75.8% (2003-03-18) |
| Avg. daily dollar volume (3 months) | $178.0m |
| Daily bars in history | 6,143 |
Split- and dividend-adjusted closes. Computed by FinzData from its own daily bars.
Institutional ownership (13F, 2026Q2)
| Managers holding | 513 |
|---|---|
| Shares held | 179,752,611 ($14.3bn reported value) |
| Quarter flows | 67 new, 201 added, 160 trimmed, 50 exited; +7,125,207 shares vs the prior quarter |
From SEC Form 13F filings. Every holder, line by line, and the full history since 2013: yf.Client().holders("IONS") on the look-back bundles. Top holders of IONS · All 13F managers
Get it in Python
import finzdata as yf
df = yf.Ticker("IONS").history(start="2002-05-09", interval="1d")
df.tail()