earnings
PR
NASDAQ · PRTA
Prothena Corporation plc Ordinary Shares
Healthcare · Biotechnology
$9.26
Down-$0.18 (-1.94%)
Updated Aug 13, 2026, 11:26 PM
SID Score
4.4/10
Composite research score
Smart Money
—
Institutional and insider signal
- Market cap
- 556.49M
- P/E ratio
- -1.98
- Dividend yield
- 0.00%
- 52-week range
- $7.39 – $11.80
- Volume
- 274.93K
- Avg. volume
- 643.8K
Price performance
PRTA price history
1M range · 21 trading sessions · Daily adjusted prices
PRTA closed at $9.26 after 21 trading sessions, up 9.85% for the selected period.
- Last close
- $9.26
- Period change
- +9.85%
- Period low
- $8.12
- Period high
- $9.26
Daily close
View OHLC price history
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Aug 12, 2026 | $9.22 | $9.31 | $9.09 | $9.26 | 274.93K |
| Aug 11, 2026 | $9.12 | $9.285 | $8.862 | $9.22 | 475.25K |
| Aug 10, 2026 | $8.76 | $9.17 | $8.53 | $9.12 | 713.69K |
| Aug 7, 2026 | $8.54 | $8.85 | $8.04 | $8.76 | 481.88K |
| Aug 6, 2026 | $8.50 | $8.7664 | $8.33 | $8.58 | 418.69K |
| Aug 5, 2026 | $8.49 | $8.735 | $8.405 | $8.49 | 489.49K |
| Aug 4, 2026 | $8.33 | $8.58 | $8.33 | $8.49 | 329.91K |
| Aug 3, 2026 | $8.17 | $8.38 | $8.04 | $8.33 | 566K |
| Jul 31, 2026 | $8.41 | $8.51 | $8.00 | $8.12 | 545.49K |
| Jul 30, 2026 | $8.50 | $8.555 | $8.255 | $8.41 | 502.23K |
| Jul 29, 2026 | $8.45 | $8.68 | $8.39 | $8.56 | 641.22K |
| Jul 28, 2026 | $8.70 | $8.78 | $8.36 | $8.56 | 802.26K |
| Jul 27, 2026 | $8.88 | $9.13 | $8.66 | $8.70 | 704.71K |
| Jul 24, 2026 | $8.54 | $8.825 | $8.35 | $8.75 | 576.84K |
| Jul 23, 2026 | $8.27 | $8.625 | $8.23 | $8.53 | 532.21K |
| Jul 22, 2026 | $8.69 | $8.79 | $8.43 | $8.44 | 542.55K |
| Jul 21, 2026 | $8.72 | $8.81 | $8.51 | $8.75 | 647.64K |
| Jul 20, 2026 | $8.66 | $8.85 | $8.545 | $8.67 | 549.63K |
| Jul 17, 2026 | $8.40 | $8.7993 | $8.275 | $8.66 | 408.39K |
| Jul 16, 2026 | $8.40 | $8.66 | $8.075 | $8.47 | 659.66K |
| Jul 15, 2026 | $8.58 | $8.63 | $8.42 | $8.43 | 504.69K |
Latest PRTA news
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