Prothena Plc Stock Performance
| PRTA Stock | USD 8.73 0.33 3.64% |
The company holds a Beta of 1.52, which implies a somewhat significant risk relative to the market. As the market goes up, the company is expected to outperform it. However, if the market returns are negative, Prothena Plc will likely underperform. At this point, Prothena plc has a negative expected return of -0.2%. Please make sure to check Prothena Plc's skewness, as well as the relationship between the rate of daily change and price action indicator , to decide if Prothena plc performance from the past will be repeated at some point in the near future.
Risk-Adjusted Performance
Weakest
Weak | Strong |
Over the last 90 days Prothena plc has generated negative risk-adjusted returns adding no value to investors with long positions. Despite conflicting performance in the last few months, the Stock's basic indicators remain somewhat strong which may send shares a bit higher in March 2026. The current disturbance may also be a sign of long term up-swing for the company investors. ...more
Actual Historical Performance (%)
One Day Return (0.88) | Five Day Return (12.04) | Year To Date Return (1.52) | Ten Year Return (77.03) | All Time Return 25.83 |
1 | Why The Narrative Around Prothena Is Shifting Amid Analyst Optimism and New Developments | 11/07/2025 |
2 | Prothena Corp Nasdaq Today Focuses on Protein Biology | 12/17/2025 |
3 | Movement as an Input in Quant Signal Sets - news.stocktradersdaily.com | 12/22/2025 |
4 | Insider Trading | 01/06/2026 |
5 | Value Recap What Wall Street predicts for Prothena Corporation plc stock price - 2025 Pullback Review Consistent Income Trade Recommendations - moha.gov.vn | 01/13/2026 |
6 | All You Need to Know About Prothena Rating Upgrade to Buy | 01/21/2026 |
7 | Prothena Share Price Crosses Above 50 Day Moving Average - Heres Why - MarketBeat | 01/27/2026 |
| Begin Period Cash Flow | 621 M | |
| Total Cashflows From Investing Activities | -298 K |
Prothena Plc Relative Risk vs. Return Landscape
If you would invest 1,054 in Prothena plc on November 1, 2025 and sell it today you would lose (148.00) from holding Prothena plc or give up 14.04% of portfolio value over 90 days. Prothena plc is currently does not generate positive expected returns and assumes 2.9826% risk (volatility on return distribution) over the 90 days horizon. In different words, 26% of stocks are less volatile than Prothena, and 99% of all traded equity instruments are projected to make higher returns than the company over the 90 days investment horizon. Expected Return |
| Risk |
Prothena Plc Target Price Odds to finish over Current Price
The tendency of Prothena Stock price to converge on an average value over time is a known aspect in finance that investors have used since the beginning of the stock market for forecasting. However, many studies suggest that some traded equity instruments are consistently mispriced before traders' demand and supply correct the spread. One possible conclusion to this anomaly is that these stocks have additional risk, for which investors demand compensation in the form of extra returns.
| Current Price | Horizon | Target Price | Odds to move above the current price in 90 days |
| 8.73 | 90 days | 8.73 | about 98.0 |
Based on a normal probability distribution, the odds of Prothena Plc to move above the current price in 90 days from now is about 98.0 (This Prothena plc probability density function shows the probability of Prothena Stock to fall within a particular range of prices over 90 days) .
Given the investment horizon of 90 days the stock has the beta coefficient of 1.52 indicating as the benchmark fluctuates upward, the company is expected to outperform it on average. However, if the benchmark returns are projected to be negative, Prothena Plc will likely underperform. Additionally Prothena plc has a negative alpha, implying that the risk taken by holding this instrument is not justified. The company is significantly underperforming the Dow Jones Industrial. Prothena Plc Price Density |
| Price |
Predictive Modules for Prothena Plc
There are currently many different techniques concerning forecasting the market as a whole, as well as predicting future values of individual securities such as Prothena plc. Regardless of method or technology, however, to accurately forecast the stock market is more a matter of luck rather than a particular technique. Nevertheless, trying to predict the stock market accurately is still an essential part of the overall investment decision process. Using different forecasting techniques and comparing the results might improve your chances of accuracy even though unexpected events may often change the market sentiment and impact your forecasting results.Sophisticated investors, who have witnessed many market ups and downs, anticipate that the market will even out over time. This tendency of Prothena Plc's price to converge to an average value over time is called mean reversion. However, historically, high market prices usually discourage investors that believe in mean reversion to invest, while low prices are viewed as an opportunity to buy.
Prothena Plc Risk Indicators
For the most part, the last 10-20 years have been a very volatile time for the stock market. Prothena Plc is not an exception. The market had few large corrections towards the Prothena Plc's value, including both sudden drops in prices as well as massive rallies. These swings have made and broken many portfolios. An investor can limit the violent swings in their portfolio by implementing a hedging strategy designed to limit downside losses. If you hold Prothena plc, one way to have your portfolio be protected is to always look up for changing volatility and market elasticity of Prothena Plc within the framework of very fundamental risk indicators.α | Alpha over Dow Jones | -0.17 | |
β | Beta against Dow Jones | 1.52 | |
σ | Overall volatility | 0.61 | |
Ir | Information ratio | -0.05 |
Prothena Plc Alerts and Suggestions
In today's market, stock alerts give investors the competitive edge they need to time the market and increase returns. Checking the ongoing alerts of Prothena Plc for significant developments is a great way to find new opportunities for your next move. Suggestions and notifications for Prothena plc can help investors quickly react to important events or material changes in technical or fundamental conditions and significant headlines that can affect investment decisions.| Prothena plc generated a negative expected return over the last 90 days | |
| The company reported the previous year's revenue of 135.16 M. Net Loss for the year was (122.31 M) with loss before overhead, payroll, taxes, and interest of (158.65 M). | |
| Prothena plc currently holds about 508.8 M in cash with (150.05 M) of positive cash flow from operations. This results in cash-per-share (CPS) ratio of 10.84, which can makes it an attractive takeover target, given it will continue generating positive cash flow. | |
| Prothena plc has a poor financial position based on the latest SEC disclosures | |
| Over 80.0% of the company shares are owned by institutional investors | |
| Latest headline from news.google.com: Prothena Share Price Crosses Above 50 Day Moving Average - Heres Why - MarketBeat |
Prothena Plc Price Density Drivers
Market volatility will typically increase when nervous long traders begin to feel the short-sellers pressure to drive the market lower. The future price of Prothena Stock often depends not only on the future outlook of the current and potential Prothena Plc's investors but also on the ongoing dynamics between investors with different trading styles. Because the market risk indicators may have small false signals, it is better to identify suitable times to hedge a portfolio using different long/short signals. Prothena Plc's indicators that are reflective of the short sentiment are summarized in the table below.
| Common Stock Shares Outstanding | 53.8 M | |
| Cash And Short Term Investments | 471.4 M |
Prothena Plc Fundamentals Growth
Prothena Stock prices reflect investors' perceptions of the future prospects and financial health of Prothena Plc, and Prothena Plc fundamentals are critical determinants of its market performance. Overall, investors pay close attention to revenue and earnings growth, profit margins, and debt levels. These fundamentals can have a significant impact on Prothena Stock performance.
| Return On Equity | -0.68 | ||||
| Return On Asset | -0.29 | ||||
| Operating Margin | (16.46) % | ||||
| Current Valuation | 170.25 M | ||||
| Shares Outstanding | 53.83 M | ||||
| Price To Earning | 37.12 X | ||||
| Price To Book | 1.67 X | ||||
| Price To Sales | 41.38 X | ||||
| Revenue | 135.16 M | ||||
| Gross Profit | (158.65 M) | ||||
| EBITDA | (153.67 M) | ||||
| Net Income | (122.31 M) | ||||
| Cash And Equivalents | 508.8 M | ||||
| Cash Per Share | 10.84 X | ||||
| Total Debt | 10.84 M | ||||
| Debt To Equity | 0.02 % | ||||
| Current Ratio | 13.00 X | ||||
| Book Value Per Share | 5.48 X | ||||
| Cash Flow From Operations | (150.05 M) | ||||
| Earnings Per Share | (5.20) X | ||||
| Market Capitalization | 487.7 M | ||||
| Total Asset | 547.11 M | ||||
| Retained Earnings | (1.1 B) | ||||
| Working Capital | 436.91 M | ||||
| Current Asset | 377.4 M | ||||
| Current Liabilities | 22.22 M | ||||
About Prothena Plc Performance
By analyzing Prothena Plc's fundamental ratios, stakeholders can gain valuable insights into Prothena Plc's financial health, operational efficiency, and overall profitability, helping them make informed investment and management decisions. For instance, if Prothena Plc has a high ROA and ROE, it suggests that the company is efficiently using its assets and equity to generate substantial profits, making it an attractive investment. Conversely, if Prothena Plc has a low ROA and ROE, it may indicate underlying issues in asset and equity management, signaling a need for operational improvements.
| Last Reported | Projected for Next Year | ||
| Days Of Inventory On Hand | (0.59) | (0.62) | |
| Return On Tangible Assets | (0.20) | (0.21) | |
| Return On Capital Employed | (0.28) | (0.29) | |
| Return On Assets | (0.20) | (0.21) | |
| Return On Equity | (0.23) | (0.24) |
Things to note about Prothena plc performance evaluation
Checking the ongoing alerts about Prothena Plc for important developments is a great way to find new opportunities for your next move. Stock alerts and notifications screener for Prothena plc help investors to be notified of important events, changes in technical or fundamental conditions, and significant headlines that can affect investment decisions.| Prothena plc generated a negative expected return over the last 90 days | |
| The company reported the previous year's revenue of 135.16 M. Net Loss for the year was (122.31 M) with loss before overhead, payroll, taxes, and interest of (158.65 M). | |
| Prothena plc currently holds about 508.8 M in cash with (150.05 M) of positive cash flow from operations. This results in cash-per-share (CPS) ratio of 10.84, which can makes it an attractive takeover target, given it will continue generating positive cash flow. | |
| Prothena plc has a poor financial position based on the latest SEC disclosures | |
| Over 80.0% of the company shares are owned by institutional investors | |
| Latest headline from news.google.com: Prothena Share Price Crosses Above 50 Day Moving Average - Heres Why - MarketBeat |
- Analyzing Prothena Plc's financial statements, including its income statement, balance sheet, and cash flow statement, helps in understanding its overall financial health and growth potential.
- Getting a closer look at valuation ratios like price-to-earnings (P/E) ratio, price-to-sales (P/S) ratio, and price-to-book (P/B) ratio help in understanding whether Prothena Plc's stock is overvalued or undervalued compared to its peers.
- Examining Prothena Plc's industry or sector and how it is performing can give you an idea of its growth potential and how it is positioned relative to its competitors.
- Evaluating Prothena Plc's management team can have a significant impact on its success or failure. Reviewing the track record and experience of Prothena Plc's management team can help you assess the Company's leadership.
- Pay attention to analyst opinions and ratings of Prothena Plc's stock. These opinions can provide insight into Prothena Plc's potential for growth and whether the stock is currently undervalued or overvalued.
Complementary Tools for Prothena Stock analysis
When running Prothena Plc's price analysis, check to measure Prothena Plc's market volatility, profitability, liquidity, solvency, efficiency, growth potential, financial leverage, and other vital indicators. We have many different tools that can be utilized to determine how healthy Prothena Plc is operating at the current time. Most of Prothena Plc's value examination focuses on studying past and present price action to predict the probability of Prothena Plc's future price movements. You can analyze the entity against its peers and the financial market as a whole to determine factors that move Prothena Plc's price. Additionally, you may evaluate how the addition of Prothena Plc to your portfolios can decrease your overall portfolio volatility.
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