No.4
Disclosure
2026/11/06 06:13
四半期報告書（10-Q）
PRTA PROTHENA CORP PUBLIC LTD COUS-listed
4 posts
PROTHENA CORP PUBLIC LTD CO (PRTA) at a glance
Prices are from Yahoo! Finance and may be delayed. Always check the latest price before trading.
PROTHENA CORP PUBLIC LTD CO (PRTA) Stock Price HistoryNear a 52-week low
PROTHENA CORP PUBLIC LTD CO closed at $7.97 on Nov 6, 2026, −0.6% over 1 month, −24.5% over 1 year.
Price5-day MA25-day MAS&P 500Disclosures
1-Month High$9.10Oct 28
1-Month Low$7.89Nov 5
1-Week Change−5.9%vs Oct 30
1-Month Change−0.6%vs Oct 6
If you had invested $1,000 1 month ago, it would be worth $994 today (−0.6%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −5.7%, while this stock moved −0.6%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $7.97 | +0.08 | +1.01% |
| Nov 5 (Thu) | $7.89 | −0.50 | −5.96% |
| Nov 4 (Wed) | $8.39 | +0.18 | +2.19% |
| Nov 3 (Tue) | $8.21 | −0.08 | −0.97% |
| Nov 2 (Mon) | $8.29 | −0.18 | −2.13% |
| Oct 30 (Fri) | $8.47 | −0.41 | −4.62% |
| Oct 29 (Thu) | $8.88 | −0.22 | −2.42% |
| Oct 28 (Wed) | $9.10 | +0.29 | +3.29% |
| Oct 27 (Tue) | $8.81 | +0.41 | +4.88% |
| Oct 26 (Mon) | $8.40 | +0.20 | +2.44% |
Price5-day MA25-day MAS&P 500Disclosures
3-Month High$9.82Sep 4
3-Month Low$7.89Nov 5
1-Month Change−0.6%vs Oct 6
3-Month Change−7.1%vs Aug 6
If you had invested $1,000 3 months ago, it would be worth $929 today (−7.1%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −4.3%, while this stock moved −7.1%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $7.97 | +0.08 | +1.01% |
| Nov 5 (Thu) | $7.89 | −0.50 | −5.96% |
| Nov 4 (Wed) | $8.39 | +0.18 | +2.19% |
| Nov 3 (Tue) | $8.21 | −0.08 | −0.97% |
| Nov 2 (Mon) | $8.29 | −0.18 | −2.13% |
| Oct 30 (Fri) | $8.47 | −0.41 | −4.62% |
| Oct 29 (Thu) | $8.88 | −0.22 | −2.42% |
| Oct 28 (Wed) | $9.10 | +0.29 | +3.29% |
| Oct 27 (Tue) | $8.81 | +0.41 | +4.88% |
| Oct 26 (Mon) | $8.40 | +0.20 | +2.44% |
Price25-day MA75-day MAS&P 500Disclosures
6-Month High$11.18May 6
6-Month Low$7.89Nov 5
3-Month Change−7.1%vs Aug 6
6-Month Change−28.7%vs May 6
If you had invested $1,000 6 months ago, it would be worth $713 today (−28.7%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +0.2%, while this stock moved −28.7%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $7.97 | −5.9% |
| Oct 2026 | $8.47 | +1.1% |
| Sep 2026 | $8.38 | −10.4% |
| Aug 2026 | $9.35 | +15.1% |
| Jul 2026 | $8.12 | −17.1% |
| Jun 2026 | $9.79 | −3.8% |
| May 2026 | $10.18 | −8.0% |
Price25-day MA75-day MAS&P 500Disclosures
52-Week High$11.51Apr 28
52-Week Low$7.89Nov 5
Year to Date−16.5%vs Dec 31
From 52-Week High−30.8%Apr 28
If you had invested $1,000 1 year ago, it would be worth $755 today (−24.5%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +9.6%, while this stock moved −24.5%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $7.97 | −5.9% |
| Oct 2026 | $8.47 | +1.1% |
| Sep 2026 | $8.38 | −10.4% |
| Aug 2026 | $9.35 | +15.1% |
| Jul 2026 | $8.12 | −17.1% |
| Jun 2026 | $9.79 | −3.8% |
| May 2026 | $10.18 | −8.0% |
| Apr 2026 | $11.06 | +13.8% |
| Mar 2026 | $9.72 | +12.1% |
| Feb 2026 | $8.67 | −1.6% |
| Jan 2026 | $8.81 | −7.7% |
| Dec 2025 | $9.55 | −11.2% |
| Nov 2025 | $10.75 | ― |
Price13-week MA26-week MAS&P 500
3-Year High$40.66Jan 1, 2024
3-Year Low$4.59May 26, 2025
Annualized Return−37.9%
Max Drawdown−88.7%
If you had invested $1,000 3 years ago, it would be worth $239 today (−76.1%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +67.1%, while this stock moved −76.1%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $7.97 | −16.5% |
| 2025 | $9.55 | ― |
Price13-week MA26-week MAS&P 500
5-Year High$78.59May 1, 2023
5-Year Low$4.59May 26, 2025
Annualized Return−32.6%
Max Drawdown−94.2%
If you had invested $1,000 5 years ago, it would be worth $139 today (−86.1%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +57.5%, while this stock moved −86.1%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $7.97 | −16.5% |
| 2025 | $9.55 | ― |
Price1-year MA2-year MAS&P 500
All-Time High$71.23Sep 2021
All-Time Low$4.59May 2025
Total Change+32.6%vs Jan 2013
Annualized Return+2.1%
If you had invested $1,000 in Jan 2013, it would be worth $1,326 today (+32.6%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +387.0%, while this stock moved +32.6%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $7.97 | −16.5% |
| 2025 | $9.55 | −31.0% |
| 2024 | $13.85 | −61.9% |
| 2023 | $36.34 | −39.7% |
| 2022 | $60.25 | +22.0% |
| 2021 | $49.40 | +311.3% |
| 2020 | $12.01 | −24.1% |
| 2019 | $15.83 | +53.7% |
| 2018 | $10.30 | −72.5% |
| 2017 | $37.49 | −23.8% |
| 2016 | $49.19 | −27.8% |
| 2015 | $68.11 | +228.1% |
| 2014 | $20.76 | −21.7% |
| 2013 | $26.52 | ― |
Daily, weekly and monthly closes (Yahoo! Finance, split-adjusted, dividends excluded). "All" covers the range Yahoo provides (from Jan 2013). Please check the latest prices before trading.
Recent SEC filings (EDGAR)
- 11/05 16:13 10-Q
- 11/05 16:07 8-K 決算発表（経営成績・財政状態）（Item 2.02）／財務諸表および添付資料（Item 9.01）
Posts
This board is shared with the Japanese and Chinese versions. Feel free to write in English, Chinese or Japanese.
No.3
Disclosure
2026/11/06 06:07
臨時報告（重要事象）（8-K）
決算発表（経営成績・財政状態）（Item 2.02）／財務諸表および添付資料（Item 9.01）
決算発表（経営成績・財政状態）（Item 2.02）／財務諸表および添付資料（Item 9.01）
Delete
No.2
Disclosure
2026/10/30 05:03
臨時報告（重要事象）（8-K）
重要な契約の終了（Item 1.02）／財務諸表および添付資料（Item 9.01）
重要な契約の終了（Item 1.02）／財務諸表および添付資料（Item 9.01）
Delete
No.1
Disclosure
2026/10/03 05:17
臨時報告（重要事象）（8-K）
役員の異動（就任・退任・報酬）（Item 5.02）
役員の異動（就任・退任・報酬）（Item 5.02）
Delete
Write on the PROTHENA CORP PUBLIC LTD CO board
More US stocks in English
- Priority Technology Holdings, Inc.PRTH
- CarParts.com, Inc.PRTS
- Prudential FinancialPRU
- Privia Health Group, Inc.PRVA
- ParaZero Technologies Ltd.PRZO
- PERSHING SQUARE INC.PS
- Public StoragePSA
- Palmer Square Capital BDC Inc.PSBD
- PROSPECT CAPITAL CORPPSEC
- Cohen & Steers Select Preferred & Income Fund, Inc.PSF
- Paysafe LtdPSFE
- Performance Shipping Inc.PSHG