Prothena Corporation plc (PRTA) last trade on NASDAQ is $9.63 (+0.21% on the session). This is the quote page — last, open, previous close, day range, and volume — not the PRTA analysis write-up.
Session tape: open $9.51, previous close $9.39, day range $9.42–$9.82, session volume 363.7K shares. PRTA currently screens at market cap $460.2M. Volume and range describe liquidity and the day’s auction — they are not a thesis on Prothena Corporation plc.
Regular US cash hours are 9:30 a.m. to 4:00 p.m. Eastern. Pre-market and after-hours prints can gap PRTA versus the official close. For what Prothena Corporation plc said in the latest filing, open the PRTA SEC page. For revenue, margins, and the research write-up, open the PRTA stock page. This quote URL stays a distinct money page so it does not dilute that analysis.
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 clinical trial for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of tr...
Beyond the live quote, get AI-powered analysis, DCF valuation, financial health scores, growth metrics, dividend analysis, insider trading data, analyst ratings, and 12-month price forecasts.
PRTA (Prothena Corporation plc) stock is currently quoted at $9.63. Stock quotes represent the current market price at which shares are available for trading during market hours.
PRTA is trading at $9.63 (+0.02, 0.21%) as of the latest market data. Prices update in real-time during trading hours.
Get live PRTA quotes on this page during market hours: current price, daily change, volume, market cap, and the session range.
PRTA stock quote includes current price, daily price change ($ and %), opening price, previous close, day's high/low, 52-week high/low, trading volume, market capitalization, and bid/ask spreads. This gives you a complete snapshot of current market activity.
Yes, PRTA stock quotes are updated in real-time during market hours (9:30 AM - 4:00 PM ET, Monday-Friday). Pre-market (4:00-9:30 AM) and after-hours (4:00-8:00 PM) quotes are also available for extended trading sessions.
PRTA current trading volume is 0.36 million shares. Trading volume indicates market activity and liquidity - higher volume typically means easier buying and selling.
View PRTA historical stock quotes on our platform with daily, weekly, and monthly data going back multiple years. Historical quotes help analyze price trends, volatility patterns, and long-term performance.
The bid price is what buyers are willing to pay for PRTA, while the ask price is what sellers want. The difference (spread) indicates liquidity - narrower spreads typically mean more liquid stocks with lower trading costs.