How to Buy Prothena Public Co Stock

Prothena Corp Public Ltd Co

Prothena Corporation plc, a late-stage clinical company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States.

Prothena Public Co stock last closed at $9.54, up 2.58% from the previous day, and has decreased 55.19% in one year. It has overperformed other stocks in the Biotechnology industry by 0.22 percentage points. Prothena Public Co stock is currently +6% from its 52-week low of $9.00, and -62.47% from its 52-week high of $25.42.

At the moment, there are 53.83M PRTA shares outstanding. The market capitalization of PRTA is $513.51M. In the last 24 hours, 1.08M PRTA shares were traded.

How to Buy Prothena Public Co Stock

Not sure how to invest in Prothena Public Co stock? Here's how.

  1. Figure out where to buy Prothena Public Co stock: You need to pick an online brokerage, but don't worry - we've tested dozens of online brokerages and apps to help you choose where to buy Prothena Public Co stock.
  2. Sign up for your brokerage account: Sign up for 0% fee trading with the highest-rated brokerage we've found.
  3. Deposit funds into your investment account: Pick your payment method and add your details.
  4. Analyze Prothena Public Co stock: The Prothena Public Co ticker symbol is PRTA. Is Prothena Public Co stock a good investment? Should you buy shares of PRTA? How do PRTA's underlying business fundamentals look? Do top analysts think Prothena Public Co is a good buy? Why has PRTA's stock price moved recently? (Hint: Our stock research website can help you evaluate if PRTA is a good stock to buy).
  5. Execute your PRTA buy order: Decide if you will purchase PRTA shares at the current market price or use a limit order to buy PRTA stock at a specific price.
  6. Keep tabs on your PRTA investment: Create a watchlist to watch your position in Prothena Public Co shares.

Step 1: Figure out where to buy Prothena Public Co stock

You will need a brokerage account to access the NASDAQ market and buy PRTA shares.

A brokerage account is an investment account that allows you to buy and sell a variety of investments, such as stocks, bonds, mutual funds, and ETFs.

Our recommended brokerage: eToro

Based on our experience, eToro is the best stock brokerage. eToro gives you:

  • You can invest in stocks with zero commissions: Invest without commissions.
  • Buy fractional shares: Even if you don't have the money to buy a full share, you can still invest in the stock.
  • Access to world markets: From Technology to Healthcare, New York to London (for US users, only US stocks are available) — you can fill your portfolio with stocks from the globe's top stock exchanges.
  • Social investing: eToro offers a community of more than 20 million users worldwide. Talk to, learn from, and copy the crypto trades of top investors.
  • Security: eToro is a regulated and licensed fintech leader.
  • Buy other financial assets: Such as ETFs and cryptocurrencies.

Get $10 towards your purchase of shares by creating an account with eToro today. This offer is only for US users.

Open eToro Account
eToro securities trading is offered by eToro USA Securities, Inc. (“the BD”), member of FINRA and SIPC. Cryptocurrency is offered by eToro USA LLC (“the MSB”) (NMLS: 1769299) and is not FDIC or SIPC insured. Investing involves risk, and content is provided for educational purposes only, does not imply a recommendation, and is not a guarantee of future performance. https://www.wallstreetzen.com is not an affiliate and may be compensated if you access certain products or services offered by the MSB and/or the BD.

Step 2: Sign up for your brokerage account

Now that you've selected the right brokerage, it's time to fill out some personal info so you can invest in PRTA stock today.

How to Start a New Account on eToro

  1. Click here to get started.
    eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.
  2. Provide your personal details to start your new brokerage account.
  1. Send your data by pressing the "Create Account" button.
  2. Get started with eToro today
    eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.

Step 3: Deposit funds into your investment account

Now that you've created your account on the best stock broker app, your next step is to transfer the money for your investment:

Check out this video walkthrough to see the process of depositing money into your new investment account.

Get started with eToro today
eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.

Step 4: Analyze Prothena Public Co stock

After you have chosen the best place to buy Prothena Public Co stock, it's absolutely critical to evaluate their stock before you buy, so you actually understand the risk and upside.

Prothena Public Co stock data

PRTA Price
$9.54
1w %
-0.52%
1y %
-55.19%
5y %
-18.88%
P/E
-4.2x
P/B
1.05x
P/S
3.79x
PEG
N/A
Revenue
$135.16M
Earnings
-$122.31M
Fore. Rev. Growth
13.39%
Fore. Earn. Growth
N/A
Market Cap
$513.51M
Next Earnings
May 14, 2025
Next Dividend
N/A

PRTA Fundamentals

WallStreetZen was built to help part-time investors perform more in-depth fundamental analysis in minutes instead of hours.

You can see all of the due diligence checks on PRTA's stock page.

Is PRTA stock properly valued?

You can use many financial metrics, analyses, models, and charts to gauge PRTA's intrinsic value.

Using relative valuations measures:

  • PRTA may be undervalued based on its P/B ratio of 1.05x, relative to Biotechnology industry P/B ratio of 4.16x

You can access additional valuation analysis on PRTA's stock here.

Is PRTA a healthy company?

Passed Financial Due Diligence Checks:

  • PRTA has a low debt to equity ratio of 0.12.
  • PRTA has $471.39M in cash and short term investments. This is sufficient to cover its annual cash burn of $150.35M.
  • Total PRTA debt is lower than 5 years ago, relative to shareholder equity.
  • PRTA has cash burn of 150348000. It has enough cash and short-term investments to cover this for at least one year.
  • There are more short-term assets than short-term liabilities on the PRTA balance sheet.
  • There are more short-term assets than long-term liabilities on the PRTA balance sheet.

Failed Financial Due Diligence Checks:

  • PRTA profit margin has gone up by 0.7 percentage points in the past year, but the company is still unprofitable.

Is it a good time to buy Prothena Public Co stock, according to Wall Street analysts?

Out of 7 Wall Street analysts who monitor PRTA, the consensus analyst rating on PRTA is a Buy

It's important to keep in mind that analyst forecasts are not stock recommendations, nor are they financial advice.

Most Recent PRTA Analyst Ratings

Jay Olson, a top 8% analyst from Oppenheimer maintains PRTA with a buy rating and raises their PRTA price target from $58.00 to $62.00, on Feb 7, 2025.

Tazeen Ahmad, a bottom 7% analyst from Bank of America maintains PRTA with a hold rating and lowers their PRTA price target from $26.00 to $22.00, on Dec 19, 2024.

You can dive deeper into what analysts are projecting on the Prothena Public Co stock forecast page.

PRTA Trading Indicators

SMA10
9.75
SMA20
10.95
SMA50
12.94
SMA100
13.67
SMA200
16.64
MACD
-1.1
MACD Signal
-1.04
MACD Histogram
-0.07
RSI
31.53
Stochastic %K
9.46
Stochastic %D
6.1
StochRSI %K
25.98
StochRSI %D
16.99

PRTA Growth Numbers

Last year, PRTA revenue was $135.16M. During the past 5 year, PRTA's revenue has grown by 178% per year. This was faster than the Biotechnology industry average of 44.4%.

Find out more about PRTA's earnings and revenue performance here.

What are PRTA insiders up to?

In the last year, executives and large shareholders at PRTA have not bought or sold any shares.

Dig into more about who owns PRTA shares here.

Does PRTA stock generate passive income?

No, Prothena Public Co doesn't provide an income stream by paying out dividends.

Get analysis from other traders

One of the primary reasons eToro is our highest-rated brokerage is because of its social trading community.

Click below to learn what other community members have to say.

Step 5: Execute your PRTA buy order

There are two primary order types:

  • Market order: A market order is an order to buy or sell a security at the best price on the market.
    Market orders are usually fine.
  • Limit order: A limit order enables you to buy or sell a stock at a specific price (or better).
    If you want to be certain you're buying or selling at an exact price, place a limit order.

Click the Open Trade button and eToro will place your order.

If you want additional assistance buying stocks on eToro, click the helpful video below:

Open eToro Account

Step 6: Keep tabs on your PRTA investment

Now that you own some shares in PRTA, you'll want to keep up with your investment.

Start a watchlist to see the latest developments about your PRTA stock.

PRTA Feed

How to Buy Stock in Prothena Public Co

To reiterate, here are the 6 steps to buy Prothena Public Co stock:

  1. Figure out where to buy Prothena Public Co stock
  2. Sign up for your brokerage account
  3. Deposit funds into your investment account
  4. Analyze Prothena Public Co stock
  5. Execute your PRTA buy order
  6. Keep tabs on your PRTA investment

If you are looking for a brokerage, eToro is our favorite option.

Get Started with eToro Today
eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.

If you would like to get updates on your new investment in Prothena Public Co, create a watchlist today.

NASDAQ: PRTA
$9.54+0.24 (+2.58%)
Updated Apr 22, 2025
Open eToro Account
Your capital is at risk.
NASDAQ: PRTA
$9.54+0.24 (+2.58%)
Updated Apr 22, 2025
Open eToro Account
Your capital is at risk.

FAQ

How much does it cost to buy one Prothena Public Co share?

As of Apr 22, 2025, it costs $9.54 to buy one share of Prothena Public Co stock.

Remember, eToro's fractional share buying allows you to buy partial shares of stocks and ETFs. Even if you only have $4, you can buy 0.419 shares of PRTA.

Get Started with eToro Today
eToro is a multi-asset investment platform. The value of your investments may go up or down. Your capital is at risk.

Is now a good time to buy Prothena Public Co stock?

According to 7 Wall Street analysts who monitor Prothena Public Co, their consensus recommendation is to buy Prothena Public Co stock.

What is the best way to buy Prothena Public Co stock?

One way to place an order for Prothena Public Co stock is with a brokerage account.
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.