PRTA
Prothena Corp Public Ltd CoCompany with tickers: PRTA
CIK
1559053
CUSIP
G72800108
Shares Outstanding
52,353,237
Website
https://www.prothena.com
Investor Relations
https://ir.prothena.com/overview/default.aspx
13F Activity (30d)
3 filings
2 filers
Price
$8.93
Market Cap
$467.51M
EPS (Diluted)
$-4.53
52W High
$11.80
52W Low
$5.64
Daily candlestick prices with configurable technical indicators (moving averages, Bollinger Bands, RSI, MACD) and event bullets for 10-K, 10-Q, Form 4 and earnings dates. Price data syncs automatically from Yahoo Finance.
3 Up Days
Indicators
Price
Panels
Event markers
Price & Indicators
Drag to pan · scroll to zoomPerformance
| 5D | 20D | 120D | MTD | YTD | |
|---|---|---|---|---|---|
| PRTA | +8.1% | -4.5% | -7.8% | -12.3% | -6.5% |
| SPY | +1.2% | +0.7% | +8.2% | -1.3% | +9.5% |
| vs SPY | +6.9% | -5.2% | -16.0% | -11.0% | -16.0% |
Close
$8.93
Open
$8.63
Day Range
$8.52 — $9.15
52W High
$11.80
52W Low
$5.64
Avg Vol (30d)
538K
Short Interest
7.7M · 13.9d
Short Vol % (latest)
61%
Last Earnings
2026-05-07
Latest Filing
Data Range
2020-01-02 — 2026-06-18