Expand PRTA Menu
PRTA MENU

PRTA Stock Summary and Trading Ideas (Prothena PLC - | NASDAQ:PRTA)

Charts for Today's Stock Price and Implied Volatility in Prothena PLC -

28-Jul-2025

Stock Price & Volume | Full Chart

30-Day Implied Volatility | IV30 Full Chart

Trade Ideas for Best Option Strategies for PRTA by Theoretical Edge and Win Rates

Sentiment

Trading Statistics

Key Ratios

Prothena PLC - (PRTA) Frequently Asked Questions

What does Prothena PLC - do?

Prothena Corp PLC is a clinical biotechnology company that focuses on protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating neurodegenerative and rare and peripheral amyloid diseases. The company's clinical pipeline of antibody-based product candidates targets a range of indications, including Amyloid Light-chain (AL) amyloidosis (NEOD001), Parkinson's disease and other related synucleinopathies (PRX002), and inflammatory diseases, including ATTR amyloidosis [Coramitug (PRX004)], Alzheimer's disease (PRX123), Neurodegeneration (PRXPRX019), and Others.

What symbol and exchange does Prothena PLC - shares trade?

Prothena PLC - trades on the NASDAQ stock market under the symbol PRTA.

What is Prothena PLC - stock price doing today?

As of July 28, 2025, PRTA stock price climbed to $6.87 with 742,327 million shares trading.

What is Prothena PLC -'s Beta?

PRTA has a beta of 1.24, meaning it tends to be more sensitive to market movements. PRTA has a correlation of 0.10 to the broad based SPY ETF.

How much is Prothena PLC - worth?

PRTA has a market cap of $369.79 million. This is considered a Small Cap stock.

How much money does Prothena PLC - make?

Last quarter Prothena PLC - reported $3 million in Revenue and -$1.12 earnings per share. This fell short of revenue expectation by $-5 million and missed earnings estimates by -$.09.

What is the highest and lowest price Prothena PLC - traded in the last 3 year period?

In the last 3 years, PRTA traded as high as $79.65 and as low as $4.32.

What are the top ETFs holding Prothena PLC -?

The top ETF exchange traded funds that PRTA belongs to (by Net Assets): IWM, VXF, IWN, IBB, VTWO.

Is Prothena PLC - (PRTA) a good investment?

PRTA has underperformed the market in the last year with a return of -71.9%, while the SPY ETF gained +18.3%. In the last 3 month period, PRTA fell short of the market, returning -28.8%, while SPY returned +15.9%. However, in the most recent 2 weeks PRTA has outperformed the stock market by returning +6.8%, while SPY returned +1.9%.

What are the support and resistance levels for Prothena PLC - (PRTA)?

PRTA support price is $6.48 and resistance is $6.88 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that PRTA shares will trade within this expected range on the day.