Prothena Corporation plc Ordinary Shares Share Price
NASDAQ: PRTA | Small CapProthena Corporation plc Ordinary Shares Stock Performance
Open $8.47 | Prev. Close $8.56 | Circuit Range N/A |
Day Range $8.32 - $8.84 | Year Range $7.44 - $11.77 | Volume 22,570 |
Average Traded $8.65 |
Prothena Corporation plc Ordinary Shares Share Price Today
As of 10 August 2026, Prothena Corporation plc Ordinary Shares's share price is $8.74. The stock opened at $8.47, compared to its previous close of $8.56. During today's trading session, Prothena Corporation plc Ordinary Shares's share price traded between $8.32 and $8.84, with an average price of $8.58. Over the past 52 weeks, the stock has recorded a high of $11.77 and a low of $7.44. In terms of performance, Prothena Corporation plc Ordinary Shares's share price has risen by 0.75% over the last six months and is up 6.59% on a year-on-year basis.
Prothena Corporation plc Ordinary Shares Share Price Chart
Prothena Corporation plc Ordinary Shares Stock Fundamentals & Key Indicators
Market Cap $470.47M | PE Ratio (TTM) -1.93 | Dividend Yield N/A |
EPS (TTM) $-4.53 | Revenue (TTM) $9.68M | Return On Equity (TTM) -87.03% |
Profit Margin -2520.57% | Debt to Equity 0.15 | Quarterly Earnings Growth YoY 38.07% |
Prothena Corporation plc Ordinary Shares Quarterly Profit & Loss
All figures in USD
Prothena Corporation plc Ordinary Shares Annual Profit & Loss
All figures in USD
About Prothena Corporation plc Ordinary Shares
Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. Its product pipeline include Prasinezumab, an investigational humanized monoclonal antibody which is in phase 2b clinical trial, as well as phase 1 and 2 clinical trials for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in phase 2 clinical trial for potential treatment of transthyretin amyloidosis; BMS-986446, an investigational antibody, which is in phase 2 clinical trial to treat Alzheimer's disease; PRX012, an investigational antibody, which is in phase 1 clinical trial to treat Alzheimer's disease; PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease; and PRX019, an investigational antibody, which is in phase 1 clinical trial for the potential treatment of neurodegenerative diseases. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.
Prothena Corporation plc Ordinary Shares Historical Returns
| Month | Open | Close | Change % |
|---|---|---|---|
Aug 2026 | $8.05 | $8.76 | +8.03% |
Jul 2026 | $9.84 | $8.11 | -17.26% |
Jun 2026 | $9.90 | $9.80 | -3.54% |
May 2026 | $11.13 | $10.16 | -8.26% |
Apr 2026 | $10.01 | $11.07 | +14.06% |
Mar 2026 | $9.11 | $9.71 | +11.93% |
Feb 2026 | $8.72 | $8.68 | -1.48% |
Jan 2026 | $9.43 | $8.80 | -7.66% |
Dec 2025 | $11.10 | $9.54 | -11.51% |
Nov 2025 | $10.82 | $10.78 | +0.33% |
Oct 2025 | $9.89 | $10.74 | +10.10% |
Sep 2025 | $8.16 | $9.76 | +18.96% |