PRTO (Proteon Therapeutics) historical data
STOCKDelisted
| Symbol | PRTO-DELISTED |
|---|---|
| Name | Proteon Therapeutics |
| History | 2014-10-22 to 2020-01-09 (about 6 years) |
| Bar sizes | Daily, hourly, 5-minute and 1-minute |
| Adjustments | Unadjusted, split-adjusted or split-and-dividend-adjusted, chosen on read |
| Survivorship | Delisted: kept in full, so backtests see the whole history |
| Free tier | Last 12 months of daily bars |
Price history at a glance
PRTO last closed at $0.85 on 2020-01-09, -67.5% over the past year and -92.7% over five years. Its deepest fall from a prior high in this history was -98.8%, reached on 2019-11-08.
| Last close | $0.85 (2020-01-09) |
|---|---|
| 1-year change | -67.5% |
| 5-year change | -92.7% |
| Annualized since 2014-10-22 | -37.8% |
| 52-week range | $0.25 – $3.80 |
| Deepest drawdown | -98.8% (2019-11-08) |
| Avg. daily dollar volume (3 months) | $127,903 |
| Daily bars in history | 1,313 |
Split- and dividend-adjusted closes. Computed by FinzData from its own daily bars.
Short interest (2026-09-30)
| Shares short | 691 (+10.9% vs prior report) |
|---|---|
| Days to cover | 1.79 |
PRTO short interest history · Unclassified (ETFs, funds, other) sector
Get it in Python
import finzdata as yf
df = yf.Ticker("PRTO-DELISTED").history(start="2014-10-22", interval="1d")
df.tail()