Prothena Corporation plc Ordinary Shares (PRTA) is a publicly traded Healthcare sector company. As of September 21, 2026, PRTA trades at $8.61 with a market cap of $440.47M and a P/E ratio of -10.37. PRTA moved +1.12% today. Year to date, PRTA is -10.16%; over the trailing twelve months it is +4.89%. Its 52-week range spans $4.32 to $16.67. Analyst consensus is neutral with an average price target of $26.33. Rallies surfaces PRTA's financials, insider trades, hedge fund holdings, congressional trades, analyst ratings, and AI-generated research below.
Rallies tracks hedge fund and 13F ownership for PRTA, including fund holders, share counts, and position changes when data is available.
| Metric | Value |
|---|---|
| Price | $8.61 |
| Market Cap | $440.47M |
| P/E Ratio | -10.37 |
| EPS | $-0.83 |
| Dividend Yield | 0.00% |
| 52-Week High | $16.67 |
| 52-Week Low | $4.32 |
| Volume | 526.89K |
| Avg Volume | 0 |
| Revenue (TTM) | $54.53M |
| Net Income | $-43.99M |
| Gross Margin | 0.00% |
4 analysts cover PRTA: 0 strong buy, 2 buy, 1 hold, 1 sell, 0 strong sell. Consensus rating is neutral. Average price target: $26.33.