Prothena Corporation plc Stock Performance
as on June 5, 2026 at 4:17 am IST
Day's Low
Day's High
$9.06$9.45
2.16%
Downside
2.05%
Upside

52 Week's Low
52 Week's High
$4.66$11.80
49.68%
Downside
27.43%
Upside

Prothena Corporation plc share price movements today
- Previous Close
- $8.92
- Open
- $9.09
- Volume
- 336.2K
- Day's Low - High
- $9.06 - $9.45
- 52 Week Low - High
- $4.66 - $11.80
Prothena Corporation plc Historical Returns
- 1 Month Return
- -17.33 %
- 3 Month Return
- -9.53 %
- 1 Year Return
- + 82.79 %
- 3 Year Return
- -87.07 %
- 5 Year Return
- -68.87 %
Prothena Corporation plc Stock Fundamentals & Key Indicators
Check Prothena Corporation plc market cap, PE, PB, PEG ratios, dividend yield, and other key fundamental indicators.
Market Cap
$467.0M
EPS (TTM)
0.05
Dividend Yield
0.00%
Quarterly Earnings Growth YOY
0.00%
PE Ratio (TTM)
0PEG Ratio
0.8
EBITDA
-92.3M
Revenue (TTM)
57.9M
Profit Margin
-260.92%
Return On Equity TTM
-40.30%
Prothena Corporation plc vs Peer Comparison
Compare market cap, revenue, PE, and other key metrics of Prothena Corporation plc with its industry peers.
Company | Analyst View | Market Cap | 5 Years Return % | PE Ratio | Profit Margin % | Dividend Yield % |
|---|---|---|---|---|---|---|
| BUY | $467.0M | -68.87% | NA | -260.92% | NA | |
| BUY | $32.2B | 411.61% | NA | 0.00% | NA | |
| BUY | $39.1B | 100.95% | 73.51 | 12.55% | NA | |
| BUY | $108.7B | 104.04% | 25.45 | 35.51% | NA | |
| BUY | $64.9B | 20.91% | 15.11 | 29.65% | 0.59% |
Stock Returns calculator for Prothena Corporation plc Stock including INR - Dollar returns
The Prothena Corporation plc stock calculator helps Indian investors calculate returns based on the historical performance of the stock. Just choose your investment amount and duration to get insights and invest more confidently. See stock returns as well as the effect of dollar appreciation over different durations.
*Dollar Impact: The bonus return you make when the US Dollar rises against the Rupee; calculated on the full amount you walk away with, not just what you invested in.
Investment Value
₹1,00,000
Prothena Corporation plc investment value today
Current value as on today
₹2,11,631
Returns
₹1,11,631
(+111.63%)
Returns from Prothena Corporation plc Stock
₹89,754 (+89.75%)
Dollar Impact
₹21,877 (+21.88%)
Analyst Recommendation on Prothena Corporation plc Stock
Based on 17 analysts
76.47%
Buy
23.53%
Hold
0.00%
Sell
Based on 17 analysts, 76.47% of analysts recommend a 'BUY' rating for Prothena Corporation plc. Average target price of $21.4
Prothena Corporation plc Share Price Target
Get share price movements and forecasts by analysts on Prothena Corporation plc.
What analysts predicted
56.73%UPSIDE
Target Price
$21.4
Current Price
$9.26
Analyzed by
17 Analysts
Target
$21.40
Prothena Corporation plc target price $21.4, a slight upside of 56.73% compared to current price of $9.26. According to 17 analysts rating.
Indian Investors' Interest in Prothena Corporation plc Stock
Search interest for Prothena Corporation plc Stock has increased by 191% in the last 30 days, reflecting an upward trend in search activity.
Time period: to
Change:191% versus previous 30 day period
Prothena Corporation plc Quarterly Profit & Loss
All numbers in Millions USD
Prothena Corporation plc Annual Profit & Loss
All numbers in Millions USD
Prothena Corporation plc Quarterly Cash Flow
All numbers in Millions USD
Prothena Corporation plc Annual Cash Flow
All numbers in Millions USD
Insights on Prothena Corporation plc
Insights help you understand the recent movement of the company's critical parameters, giving you an overall view of the company.
POSITIVE IMPACTRevenue Rich

Revenue is up for the last 2 quarters, 21.0K → 51.08M (in $), with an average increase of 100.0% per quarter
POSITIVE IMPACTProfit Spike

Netprofit is up for the last 4 quarters, -125.76M → 32.72M (in $), with an average increase of 159.8% per quarter
NO EFFECTAgainst Peers

In the last 1 year, Revolution Medicines, Inc. Common Stock has given 286.3% return, outperforming this stock by 203.5%
NO EFFECTAgainst Peers

In the last 3 years, Revolution Medicines, Inc. Common Stock has given 510.1% return, outperforming this stock by 597.2%
NEGATIVE IMPACTPrice Dip

In the last 7 days, PRTA stock has moved down by -10.6%
About Prothena Corporation plc
| Organisation | Prothena Corporation plc |
| Headquarters | 77 Sir John Rogerson?s Quay, Dublin, Ireland, D02 VK60 |
| Industry | Biotechnology |
| CEO | Dr. Gene G. Kinney Ph.D. |
| E-voting on shares | Click here to vote |
Key Management of Prothena Corporation plc
Name | Title |
|---|---|
Ms. Karin L. Walker CPA | Chief Accounting Officer & Controller |
Mr. Mark C. Johnson C.F.A. | Vice President of Investor Relations |
Phillip Dolan | Sr. Director & Head of Exploratory Research |
Ms. Annie Evans Kingston | Chief Strategy Officer |
Mr. Tran B. Nguyen M.B.A. | Chief Financial Officer |
Mr. Brandon S. Smith | Chief Operating Officer |
Dr. Wagner M. Zago Ph.D. | Chief Scientific Officer |
Dr. Chad H. Swanson Ph.D. | Chief Development Officer |
Mr. Michael J. Malecek | Chief Legal Officer & Company Secretary |
Dr. Gene G. Kinney Ph.D. | President, CEO & Director |
FAQs
What is Prothena Corporation plc share price today?
Prothena Corporation plc share price today is $9.26 as on . Prothena Corporation plc share today touched a day high of $9.45 and a low of $9.06.
What is the 52 week high and 52 week low for Prothena Corporation plc share?
Prothena Corporation plc share touched a 52 week high of $11.8 on and a 52 week low of $4.66 on . Prothena Corporation plc stock price today i.e. is trending at $9.26,which is 21.53% down from its 52 week high and 98.71% up from its 52 week low.
What is Prothena Corporation plc's market capitalisation today?
Prothena Corporation plc market capitalisation is $0.00T as on .
How to invest in Prothena Corporation plc Stock (PRTA) from India?
- Step 1: Open a free US stocks account on INDmoney App and transfer your Rupees into Dollars to your INDmoney US stocks account. For a step by step instruction, check How to Transfer Money to Your US Stocks Account .
- Step 2: Search for Prothena Corporation plc on INDmoney app. Click on Buy button. You can invest as low as $1.5 in Prothena Corporation plc Shares that will get you 0.1620 shares as per Prothena Corporation plc share price of $9.26 per share as on June 4, 2026 at 10:47 pm IST.
What is the minimum amount required to buy Prothena Corporation plc Stock (PRTA) from India?
Indian investors can start investing in Prothena Corporation plc (PRTA) shares with as little as ₹95.775 or $1 (as of ) using the INDmoney app.
For example: If you want to invest $10 or ₹957.75 in Prothena Corporation plc stock (as per the Rupee-Dollar exchange rate as on ).
Based on Prothena Corporation plc share’s latest price of $9.26 as on June 4, 2026 at 10:47 pm IST, you will get 1.0799 shares of Prothena Corporation plc. Learn more about
fractional shares .
What are the returns that Prothena Corporation plc has given to Indian investors in the last 5 years?
Prothena Corporation plc stock has given -68.87% share price returns and 30.36% dollar appreciation to an Indian investor in the last 5 years.
Read more about How do Currency Exchange Rates impact your returns on US Stock Investments?