Prothena Corp. Plc (PRTA) News & Corporate Actions | Announcements, Board Meetings, Splits, Bonuses, Rights Issues

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{
"title": "Prothena Corp. Experiences Revision in Stock Evaluation Amid Market Challenges",
"link": "https://www.marketsmojo.com/news/stocks-in-action/prothena-corp-plcs-technical-trend-shifts-from-sideways-to-mildly-bullish-amid-mixed-indicators-3600808",
"imagepath": "https://i.marketsmojo.com/newsimg/2025/10/ProthenaCorpPlc_technicaldot_3600808.png",
"date": "2025-10-07 19:11:54",
"description": "Prothena Corp. Plc, a microcap in the Pharmaceuticals and Biotechnology sector, has faced significant challenges over the past year, with a notable decline in stock performance. Technical indicators present a mixed sentiment, reflecting volatility and contrasting trends compared to broader market movements. Strategic adjustments may be necessary."
},
{
"title": "Is Prothena Corp. Plc technically bullish or bearish?",
"link": "https://www.marketsmojo.com/news/stocks-in-action/is-prothena-corp-plc-technically-bullish-or-bearish-3599234",
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"date": "2025-10-07 12:21:58",
"description": "As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly MACD is mildly bullish, while the monthly MACD also supports this stance. The monthly RSI is bullish, contrasting with the bearish weekly RSI. The Bollinger Bands indicate a mildly bullish trend on the weekly chart but are mildly bearish on the monthly. The KST shows a bullish weekly trend but a bearish monthly trend, and the Dow Theory indicates a mildly bullish monthly trend with no trend on the weekly. The daily moving averages are mildly bearish, which tempers the overall bullish sentiment. Overall, the indicators suggest a mildly bullish stance, albeit with some mixed signals, particularly in the short term. Multi-period return data is not available for comparison with the S&P 500...."
},
{
"title": "Is Prothena Corp. Plc technically bullish or bearish?",
"link": "https://www.marketsmojo.com/news/stocks-in-action/is-prothena-corp-plc-technically-bullish-or-bearish-3593963",
"imagepath": "",
"date": "2025-10-06 12:11:55",
"description": "As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly MACD and Dow Theory both indicate a mildly bullish stance, while the monthly MACD is also mildly bullish and the monthly RSI is bullish. However, the daily moving averages are mildly bearish, which presents a mixed picture. \n\nIn terms of performance, Prothena has shown strong short-term returns with a 5.42% gain over the past week compared to the S&P 500's 1.09%, and an 18.24% return over the past month versus the S&P 500's 4.15%. However, the longer-term outlook remains concerning, with a year-to-date return of -28.38% against the S&P 500's 14.18%, and a one-year return of -40.95% compared to the S&P 500's 17.82%. Overall, the current technical stance is mildly bullish, but caution is warranted due to the mixed indicators and poor long-term performance...."
},
{
"title": "Is Prothena Corp. Plc technically bullish or bearish?",
"link": "https://www.marketsmojo.com/news/stocks-in-action/is-prothena-corp-plc-technically-bullish-or-bearish-3592033",
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"date": "2025-10-05 11:56:58",
"description": "As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly and monthly MACD indicators are both mildly bullish, while the monthly RSI is bullish. The Bollinger Bands show a bullish signal on the weekly timeframe but mildly bearish on the monthly. Moving averages indicate a mildly bearish stance on the daily timeframe. The KST is bullish weekly but bearish monthly, and Dow Theory supports a mildly bullish outlook on both timeframes. The OBV is also mildly bullish weekly and monthly.\n\nIn terms of performance, Prothena has outperformed the S&P 500 over the past week and month, returning 5.42% and 18.24% respectively, while it has significantly underperformed over longer periods, such as year-to-date and one year, with returns of -28.38% and -40.95%. Overall, the current technical stance is mildly bullish, driven by the positive signals from MACD, RS..."
},
{
"title": "Is Prothena Corp. Plc technically bullish or bearish?",
"link": "https://www.marketsmojo.com/news/stocks-in-action/is-prothena-corp-plc-technically-bullish-or-bearish-3547368",
"imagepath": "",
"date": "2025-09-20 19:53:48",
"description": "As of 22 August 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bearish. The current technical stance is bearish, with key indicators supporting this view including a mildly bearish signal from the daily moving averages and a mildly bearish stance in the weekly Dow Theory and OBV. While the MACD shows mildly bullish signals on both weekly and monthly time frames, the overall sentiment is tempered by the bearish monthly Bollinger Bands and KST. \n\nIn terms of performance, Prothena has significantly underperformed the S&P 500 across multiple periods, with a year-to-date return of -40.94% compared to the S&P 500's 12.22%, and a one-year return of -61.92% versus 17.14% for the benchmark...."
},
{
"title": "Is Prothena Corp. Plc overvalued or undervalued?",
"link": "https://www.marketsmojo.com/news/stocks-in-action/is-prothena-corp-plc-overvalued-or-undervalued-3543759",
"imagepath": "",
"date": "2025-09-20 18:27:54",
"description": "As of 8 August 2022, Prothena Corp. Plc's valuation grade changed from fair to risky, indicating a shift towards a more cautious outlook. The company is currently overvalued based on its financial metrics, particularly given its negative return on equity of -25.19% and a price to book value ratio of 0.67, which suggests that the market is pricing the stock higher than its underlying assets justify. Additionally, the EV to EBITDA ratio stands at 0.92, reflecting a concerning valuation relative to its earnings potential.\n\nIn comparison to its peers, Prothena's valuation appears unfavorable; for instance, its peer has a P/E ratio of -1.69 and an EV to EBITDA of -0.36, highlighting a stark contrast in financial health. The absence of positive earnings further complicates the valuation picture, reinforcing the notion that the stock is overvalued. Although specific return data is not available, the lack of positi..."
}
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News and Views

Prothena Corp. Experiences Revision in Stock Evaluation Amid Market Challenges

2025-10-07 19:11:54

Prothena Corp. Plc, a microcap in the Pharmaceuticals and Biotechnology sector, has faced significant challenges over the past year, with a notable decline in stock performance. Technical indicators present a mixed sentiment, reflecting volatility and contrasting trends compared to broader market movements. Strategic adjustments may be necessary.

Is Prothena Corp. Plc technically bullish or bearish?

2025-10-07 12:21:58

As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly MACD is mildly bullish, while the monthly MACD also supports this stance. The monthly RSI is bullish, contrasting with the bearish weekly RSI. The Bollinger Bands indicate a mildly bullish trend on the weekly chart but are mildly bearish on the monthly. The KST shows a bullish weekly trend but a bearish monthly trend, and the Dow Theory indicates a mildly bullish monthly trend with no trend on the weekly. The daily moving averages are mildly bearish, which tempers the overall bullish sentiment. Overall, the indicators suggest a mildly bullish stance, albeit with some mixed signals, particularly in the short term. Multi-period return data is not available for comparison with the S&P 500....

Is Prothena Corp. Plc technically bullish or bearish?

2025-10-06 12:11:55

As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly MACD and Dow Theory both indicate a mildly bullish stance, while the monthly MACD is also mildly bullish and the monthly RSI is bullish. However, the daily moving averages are mildly bearish, which presents a mixed picture. In terms of performance, Prothena has shown strong short-term returns with a 5.42% gain over the past week compared to the S&P 500's 1.09%, and an 18.24% return over the past month versus the S&P 500's 4.15%. However, the longer-term outlook remains concerning, with a year-to-date return of -28.38% against the S&P 500's 14.18%, and a one-year return of -40.95% compared to the S&P 500's 17.82%. Overall, the current technical stance is mildly bullish, but caution is warranted due to the mixed indicators and poor long-term performance....

Is Prothena Corp. Plc technically bullish or bearish?

2025-10-05 11:56:58

As of 3 October 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bullish. The weekly and monthly MACD indicators are both mildly bullish, while the monthly RSI is bullish. The Bollinger Bands show a bullish signal on the weekly timeframe but mildly bearish on the monthly. Moving averages indicate a mildly bearish stance on the daily timeframe. The KST is bullish weekly but bearish monthly, and Dow Theory supports a mildly bullish outlook on both timeframes. The OBV is also mildly bullish weekly and monthly. In terms of performance, Prothena has outperformed the S&P 500 over the past week and month, returning 5.42% and 18.24% respectively, while it has significantly underperformed over longer periods, such as year-to-date and one year, with returns of -28.38% and -40.95%. Overall, the current technical stance is mildly bullish, driven by the positive signals from MACD, RS...

Is Prothena Corp. Plc technically bullish or bearish?

2025-09-20 19:53:48

As of 22 August 2025, the technical trend for Prothena Corp. Plc has changed from sideways to mildly bearish. The current technical stance is bearish, with key indicators supporting this view including a mildly bearish signal from the daily moving averages and a mildly bearish stance in the weekly Dow Theory and OBV. While the MACD shows mildly bullish signals on both weekly and monthly time frames, the overall sentiment is tempered by the bearish monthly Bollinger Bands and KST. In terms of performance, Prothena has significantly underperformed the S&P 500 across multiple periods, with a year-to-date return of -40.94% compared to the S&P 500's 12.22%, and a one-year return of -61.92% versus 17.14% for the benchmark....

Is Prothena Corp. Plc overvalued or undervalued?

2025-09-20 18:27:54

As of 8 August 2022, Prothena Corp. Plc's valuation grade changed from fair to risky, indicating a shift towards a more cautious outlook. The company is currently overvalued based on its financial metrics, particularly given its negative return on equity of -25.19% and a price to book value ratio of 0.67, which suggests that the market is pricing the stock higher than its underlying assets justify. Additionally, the EV to EBITDA ratio stands at 0.92, reflecting a concerning valuation relative to its earnings potential. In comparison to its peers, Prothena's valuation appears unfavorable; for instance, its peer has a P/E ratio of -1.69 and an EV to EBITDA of -0.36, highlighting a stark contrast in financial health. The absence of positive earnings further complicates the valuation picture, reinforcing the notion that the stock is overvalued. Although specific return data is not available, the lack of positi...

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