PTGX (Protagonist Therapeutics Inc.) historical data
STOCKListed1-minute bars
| Symbol | PTGX |
|---|---|
| Name | Protagonist Therapeutics Inc. |
| Exchange | NASDAQ |
| Sector | Healthcare |
| Industry | Biotechnology |
| IPO date | 2016-08-11 |
| History | 2016-08-12 to 2026-10-09 (about 10 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
PTGX last closed at $143.73 on 2026-10-09, +114.4% over the past year and +688.0% over five years. Its deepest fall from a prior high in this history was -85.8%, reached on 2022-06-13.
| Last close | $143.73 (2026-10-09) |
|---|---|
| 1-year change | +114.4% |
| 5-year change | +688.0% |
| Annualized since 2016-08-12 | +28.2% |
| 52-week range | $67.04 – $158.62 |
| Deepest drawdown | -85.8% (2022-06-13) |
| Avg. daily dollar volume (3 months) | $87.5m |
| Daily bars in history | 2,553 |
Split- and dividend-adjusted closes. Computed by FinzData from its own daily bars.
Institutional ownership (13F, 2026Q2)
| Managers holding | 343 |
|---|---|
| Shares held | 75,793,384 ($9.3bn reported value) |
| Quarter flows | 63 new, 140 added, 88 trimmed, 40 exited; -3,040,341 shares vs the prior quarter |
From SEC Form 13F filings. Every holder, line by line, and the full history since 2013: yf.Client().holders("PTGX") on the look-back bundles. Top holders of PTGX · All 13F managers
Short interest (2026-09-30)
| Shares short | 9,345,382 (+14.8% vs prior report) |
|---|---|
| Days to cover | 11.49 |
PTGX short interest history · Healthcare sector
Get it in Python
import finzdata as yf
df = yf.Ticker("PTGX").history(start="2016-08-12", interval="1d")
df.tail()