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9.82
2.29%
0.22
After Hours:
9.75
-0.07
-0.71%
Prothena Corp Plc Stock (PRTA) Price History
The historical daily chart and data for Prothena Corp Plc stock (PRTA), show that the latest closing stock price as of September 04, 2026, is $9.82.
- Prothena Corp Plc all-time high stock price is $79.75, occurred on September 27, 2021.
- The lowest Prothena Corp Plc stock price recorded was $4.32 on May 28, 2025. Since then, Prothena Corp Plc's stock price has risen over 127.31% to $9.82 now.
- The 52-week high stock price for PRTA is $11.80, representing a 20.16% increase from the current share price, occurred on May 08, 2026.
- The 52-week low stock price for PRTA is $7.73, indicating a -21.28% decrease from the current share price, occurred on June 11, 2026.
- The closing price of Prothena Corp Plc (PRTA) stock in the beginning of 2025 was $49.22. The stock closed the year at $60.25, a gain of over 22.41% for the year.
The table below shows more information about PRTA historical price data:
Daily
Weekly
Monthly
7D
30D
60D
YTD
1Y
| Date | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Sep 04, 2026 | $9.87 | $9.48 | $0.39 | 383,926.0 | +2.29% |
| Sep 03, 2026 | $9.78 | $9.51 | $0.2681 | 275,198.0 | -0.88% |
| Sep 02, 2026 | $9.75 | $9.37 | $0.38 | 341,054.0 | +0.78% |
| Sep 01, 2026 | $9.63 | $9.26 | $0.37 | 267,669.0 | +2.78% |
| Aug 31, 2026 | $9.40 | $9.10 | $0.2999 | 333,767.0 | +0.21% |
| Aug 28, 2026 | $9.48 | $8.95 | $0.529 | 498,115.0 | +2.64% |
| Aug 27, 2026 | $9.24 | $8.95 | $0.29 | 338,896.0 | -1.73% |
| Aug 26, 2026 | $9.40 | $9.15 | $0.2467 | 289,037.0 | -1.80% |
| Aug 25, 2026 | $9.82 | $9.42 | $0.40 | 363,694.0 | +0.32% |
| Aug 24, 2026 | $9.49 | $9.19 | $0.30 | 248,007.0 | -0.63% |
| Aug 21, 2026 | $9.52 | $9.09 | $0.43 | 376,042.0 | +4.65% |
| Aug 20, 2026 | $9.14 | $8.71 | $0.435 | 345,467.0 | -2.80% |
| Aug 19, 2026 | $9.34 | $8.91 | $0.43 | 384,695.0 | +6.66% |
| Aug 18, 2026 | $9.00 | $8.58 | $0.42 | 248,559.0 | -1.91% |
| Aug 17, 2026 | $9.07 | $8.73 | $0.346 | 365,916.0 | +0.23% |
| Aug 14, 2026 | $9.15 | $8.84 | $0.3113 | 312,599.0 | -2.42% |
| Aug 13, 2026 | $9.37 | $9.04 | $0.325 | 343,056.0 | -1.94% |
| Aug 12, 2026 | $9.31 | $9.09 | $0.22 | 274,927.0 | +0.43% |
| Aug 11, 2026 | $9.29 | $8.86 | $0.423 | 475,251.0 | +1.10% |
| Aug 10, 2026 | $9.17 | $8.53 | $0.64 | 713,686.0 | +4.11% |
Prothena Corp Plc Stock (PRTA) Year by Year Price History
In this detailed analysis, we present a comprehensive overview of the price movements of Prothena Corp Plc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of PRTA shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Prothena Corp Plc stock price history provides a foundation for understanding how the company's stock has evolved over time.
Prothena Corp Plc Stock (PRTA) Price History 2026
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Sep, 2026 | $9.87 | $9.26 | $0.61 | 1,651,773.0 | +5.03% |
| Aug, 2026 | $9.82 | $8.04 | $1.78 | 8,197,556.0 | +15.15% |
| Jul, 2026 | $10.15 | $8.00 | $2.15 | 12,163,406.0 | -17.06% |
| Jun, 2026 | $10.12 | $7.73 | $2.39 | 13,191,376.0 | -3.83% |
| May, 2026 | $11.80 | $9.02 | $2.78 | 11,134,889.0 | -7.96% |
| Apr, 2026 | $11.57 | $9.51 | $2.06 | 8,777,711.0 | +13.79% |
| Mar, 2026 | $10.27 | $8.38 | $1.89 | 13,125,266.0 | +12.11% |
| Feb, 2026 | $9.59 | $8.20 | $1.39 | 7,863,626.0 | -1.59% |
| Jan, 2026 | $10.53 | $8.65 | $1.88 | 10,156,299.0 | -7.75% |
Prothena Corp Plc Stock (PRTA) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2025 | $11.57 | $9.07 | $2.50 | 15,977,385.0 | -13.40% |
| Nov, 2025 | $11.17 | $9.72 | $1.45 | 11,080,284.0 | +0.00% |
| Oct, 2025 | $11.69 | $9.58 | $2.11 | 14,246,440.0 | +10.14% |
| Sep, 2025 | $9.85 | $8.02 | $1.83 | 16,831,625.0 | +19.02% |
| Aug, 2025 | $8.97 | $6.61 | $2.36 | 24,377,063.0 | +19.36% |
| Jul, 2025 | $7.33 | $5.96 | $1.37 | 18,053,702.0 | +13.18% |
| Jun, 2025 | $6.41 | $4.53 | $1.88 | 37,183,399.0 | +32.24% |
| May, 2025 | $9.50 | $4.32 | $5.18 | 56,710,247.0 | -50.11% |
| Apr, 2025 | $12.45 | $9.00 | $3.45 | 13,642,220.0 | -25.66% |
| Mar, 2025 | $16.05 | $11.78 | $4.27 | 9,041,090.0 | -21.73% |
| Feb, 2025 | $16.66 | $13.15 | $3.51 | 6,536,309.0 | +11.10% |
| Jan, 2025 | $16.64 | $12.39 | $4.25 | 7,635,320.0 | +2.74% |
Prothena Corp Plc Stock (PRTA) Price History 2024
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2024 | $17.66 | $11.70 | $5.96 | 13,893,370.0 | -8.20% |
| Nov, 2024 | $18.77 | $13.22 | $5.55 | 8,760,505.0 | -4.65% |
| Oct, 2024 | $18.88 | $15.30 | $3.58 | 12,799,231.0 | +1.61% |
| Sep, 2024 | $22.83 | $15.52 | $7.31 | 9,584,427.0 | -24.88% |
| Aug, 2024 | $23.66 | $18.99 | $4.67 | 7,120,844.0 | -4.34% |
| Jul, 2024 | $25.42 | $19.55 | $5.87 | 9,094,562.0 | +12.79% |
| Jun, 2024 | $22.81 | $18.69 | $4.12 | 11,583,033.0 | -0.82% |
| May, 2024 | $24.20 | $19.52 | $4.68 | 10,950,137.0 | +2.31% |
| Apr, 2024 | $26.36 | $19.65 | $6.71 | 11,145,523.0 | -17.88% |
| Mar, 2024 | $30.85 | $24.25 | $6.60 | 11,542,717.0 | -10.22% |
| Feb, 2024 | $31.03 | $24.29 | $6.75 | 16,161,111.0 | -2.82% |
| Jan, 2024 | $41.55 | $28.27 | $13.28 | 22,443,182.0 | -21.88% |
0.86%
0.31%
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