Prothena Corporation plc (PRTA) Stock Overview
NASDAQ · Healthcare · Biotechnology
✓ Sourced directly from Yahoo Finance · Checked for accuracy at every rebuild · Snapshot: 6 September 2026
About Prothena Corporation plc
Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3…
Source: Yahoo Finance
Sector & Industry
Prothena Corporation plc operates in the Healthcare sector, within the Biotechnology industry group. It is listed on the NASDAQ exchange.
Prothena Corporation plc at a Glance
| Company | Prothena Corporation plc |
| Ticker | PRTA |
| Exchange | NASDAQ |
| Currency | USD |
| Price | $9.82 |
| Market cap | $504.13M |
| P/E ratio (trailing) | — |
| EPS (trailing) | -$0.82 |
| 52-week high | $11.80 |
| 52-week low | $7.73 |
| Dividend yield | — |
| Ex-dividend date | — |
| Beta | -0.33 |
| Return on equity (ROE) | -14.39% |
| Debt-to-equity | 2.44% |
| Average volume | 511,055 |
| Shares outstanding | 51.34M |
| Sector | Healthcare |
| Industry | Biotechnology |
| Employees | 67 |
| Country | Ireland |
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Check Price →Frequently Asked Questions
- What is Prothena Corporation plc's current P/E ratio?
- Prothena Corporation plc (PRTA) has a trailing P/E ratio of — as of our 6 September 2026 data snapshot. Learn what the P/E ratio means →
- What is Prothena Corporation plc's market capitalisation?
- Prothena Corporation plc's market cap is $504.13M based on our latest snapshot. See how it ranks by market cap →
- What is PRTA's 52-week range?
- Over the past 52 weeks, PRTA has traded between $7.73 and $11.80. What does the 52-week range mean? →
- How volatile is Prothena Corporation plc compared to the market?
- Prothena Corporation plc has a beta of -0.33, meaning it has historically moved less than the broader market. What does beta measure? →
- Does Prothena Corporation plc pay a dividend?
- Prothena Corporation plc does not currently pay a dividend according to our latest data.
- What exchange is PRTA listed on?
- PRTA is listed on the NASDAQ. Browse all NASDAQ-listed stocks →
- What sector is Prothena Corporation plc in?
- Prothena Corporation plc is classified in the Healthcare sector. Compare with Healthcare peers →
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