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How do I analyze PRTA stock?

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What is PRTA stock price today?

The current PRTA stock price is $9.69 as of 25 Dec '25. Get real-time PRTA stock price, historical data, and price charts on Financhill.

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What does Prothena Corp. Plc (PRTA) do?

Prothena Corp. Plc (PRTA) is a publicly traded company. View detailed company information, business model, financial statements, and corporate data on our PRTA company profile page.

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What is the market cap of PRTA?

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What is the P/E ratio of PRTA?

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What are PRTA earnings?

View PRTA earnings data, quarterly results, revenue growth, and profit margins on our comprehensive earnings analysis page. Track earnings trends and analyst estimates.

Sell

19

PRTA Quote, Financials, Valuation and Earnings

Last price:

$9.73

Seasonality move :

5.27%

Day range:

$9.23 - $9.74

52-week range:

$4.32 - $16.67

Dividend yield:

0%

P/E ratio:

--

P/S ratio:

44.25x

P/B ratio:

1.77x

Volume:

237.4K

Avg. volume:

724.3K

1-year change:

-37.08%

Market cap:

$521.6M

Revenue:

$135.2M

EPS (TTM):

-$5.21

Prothena Corp. Plc SEC Filings

Company	Filed	Form Type	Description
PRTA Prothena Corp. Plc	05/08/2024	10-Q	10-Q filing on 05/08/2024	View Form
PRTA Prothena Corp. Plc	02/22/2024	10-K	10-K filing on 02/22/2024	View Form
PRTA Prothena Corp. Plc	11/02/2023	10-Q	10-Q filing on 11/02/2023	View Form
PRTA Prothena Corp. Plc	08/03/2023	10-Q	10-Q filing on 08/03/2023	View Form
PRTA Prothena Corp. Plc	05/04/2023	10-Q	10-Q filing on 05/04/2023	View Form
PRTA Prothena Corp. Plc	02/28/2023	10-K	10-K filing on 02/28/2023	View Form
PRTA Prothena Corp. Plc	11/03/2022	10-Q	10-Q filing on 11/03/2022	View Form
PRTA Prothena Corp. Plc	08/08/2022	10-Q	10-Q filing on 08/08/2022	View Form
PRTA Prothena Corp. Plc	05/05/2022	10-Q	10-Q filing on 05/05/2022	View Form
PRTA Prothena Corp. Plc	02/25/2022	10-K	10-K filing on 02/25/2022	View Form
PRTA Prothena Corp. Plc	11/04/2021	10-Q	10-Q filing on 11/04/2021	View Form
PRTA Prothena Corp. Plc	08/05/2021	10-Q	10-Q filing on 08/05/2021	View Form
PRTA Prothena Corp. Plc	05/11/2021	10-Q	10-Q filing on 05/11/2021	View Form
PRTA Prothena Corp. Plc	02/26/2021	10-K	10-K filing on 02/26/2021	View Form
PRTA Prothena Corp. Plc	11/04/2020	10-Q	10-Q filing on 11/04/2020	View Form
PRTA Prothena Corp. Plc	08/06/2020	10-Q	10-Q filing on 08/06/2020	View Form
PRTA Prothena Corp. Plc	05/06/2020	10-Q	10-Q filing on 05/06/2020	View Form
PRTA Prothena Corp. Plc	03/03/2020	10-K	10-K filing on 03/03/2020	View Form
PRTA Prothena Corp. Plc	11/05/2019	10-Q	10-Q filing on 11/05/2019	View Form
PRTA Prothena Corp. Plc	08/06/2019	10-Q	10-Q filing on 08/06/2019	View Form
PRTA Prothena Corp. Plc	05/07/2019	10-Q	10-Q filing on 05/07/2019	View Form
PRTA Prothena Corp. Plc	03/15/2019	10-K	10-K filing on 03/15/2019	View Form
PRTA Prothena Corp. Plc	11/06/2018	10-Q	10-Q filing on 11/06/2018	View Form
PRTA Prothena Corp. Plc	08/17/2018	10-Q	10-Q filing on 08/17/2018	View Form
PRTA Prothena Corp. Plc	08/07/2018	10-Q	10-Q filing on 08/07/2018	View Form
PRTA Prothena Corp. Plc	05/09/2018	10-Q	10-Q filing on 05/09/2018	View Form
PRTA Prothena Corp. Plc	02/26/2018	10-K	10-K filing on 02/26/2018	View Form
PRTA Prothena Corp. Plc	11/07/2017	10-Q	10-Q filing on 11/07/2017	View Form
PRTA Prothena Corp. Plc	08/09/2017	10-Q	10-Q filing on 08/09/2017	View Form
PRTA Prothena Corp. Plc	05/09/2017	10-Q	10-Q filing on 05/09/2017	View Form
PRTA Prothena Corp. Plc	02/27/2017	10-K	10-K filing on 02/27/2017	View Form
PRTA Prothena Corp. Plc	11/02/2016	10-Q	10-Q filing on 11/02/2016	View Form
PRTA Prothena Corp. Plc	08/02/2016	10-Q	10-Q filing on 08/02/2016	View Form
PRTA Prothena Corp. Plc	05/04/2016	10-Q	10-Q filing on 05/04/2016	View Form
PRTA Prothena Corp. Plc	02/25/2016	10-K	10-K filing on 02/25/2016	View Form

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Financial Ratios

PRTA

Sector

P/E ratio

--

23.89x

PEG ratio

-0.02x

-0.01x

P/B ratio

1.77x

1.82x

Price / LTM sales

44.25x

1.60x

Growth Metrics

PRTA

Sector

Revenue growth

148.97%

4.62%

Earnings growth

38.12%

10.88%

Revenue (5-year growth)

178%

6.5%

Earnings forecast

-$0.54

-$0.21

Profitability

PRTA

Sector

Profitability FY 2024

$131.6M

$3.5M

Return on invested capital

-65.85%

-31.77%

Return on assets

-58.69%

-27.96%

Return on equity

-67.47%

-37.63%

Earnings Date

Last Earnings Date

Nov

6

Next Earnings Date

Feb

19

Estimated Next Earnings Date

Feb

5

Balance Sheet

PRTA

Sector

Total cash

$330.8M

$26.3M

Short term investments

--

$25.7M

Total assets

$547.1M

$78M

Long term debt

$6.2M

$3.3M

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Buy or Sell?

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Prothena Corp. Plc SEC Filings

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