MARKET IS OPEN
Loading latest tickers...
Market Indices
S&P 500
$7,801.77
-0.22%
NASDAQ 100
$31,160.08
-0.21%
DOW JONES
$51,180.00
-0.66%
NASDAQ Composite
$27,538.69
-0.22%
RUSSELL 2000
$2,777.00
-1.29%
CBOE VIX
$15.08
+0.47%
Sector Heatmap
Technology-0.30%
Financials-0.48%
Healthcare+1.03%
Consumer Cycl-0.32%
Consumer Staples-0.12%
Energy-0.58%
Industrials-2.18%
Materials-1.51%
Real Estate-1.29%
Utilities-0.02%
Comm Services-0.35%
PRTA — Prothena Corporation plc Ordinary Shares
NasdaqProthena Corporation plc Ordinary Shares
$8.48
+0.46(+5.74%)
- O
- 7.93
- H
- 8.63
- L
- 7.88
- V
- 690.35K
⏱️ End-of-day dataAs of Oct 7, 2026
Latest Close$8.48
Period Return-12.58%
Period High$11.80
Period Low$4.32
Avg Daily Volume813.6K
Total Trading Days365
PRTA — Historical OHLCV Price & Volume Table
Apr 25, 2025 — Oct 7, 2026| Date▼ | Open⇅ | High⇅ | Low⇅ | Close⇅ | Change ($)⇅ | Change (%)⇅ | Volume⇅ | VWAP⇅ | Day Range (L - H) |
|---|---|---|---|---|---|---|---|---|---|
| Oct 7, 2026 | $7.93 | $8.63 | $7.88 | $8.48 | +$0.46 | +5.74% | 690,354 | $8.40 | $7.88 $8.63 |
| Oct 6, 2026 | $8.28 | $8.28 | $7.80 | $8.02 | $-0.25 | -3.02% | 510,608 | $8.02 | $7.80 $8.28 |
| Oct 5, 2026 | $8.34 | $8.37 | $7.91 | $8.27 | $-0.09 | -1.08% | 714,463 | $8.17 | $7.91 $8.37 |
| Oct 2, 2026 | $8.62 | $8.62 | $8.35 | $8.36 | $-0.18 | -2.11% | 675,839 | $8.48 | $8.35 $8.62 |
| Oct 1, 2026 | $8.54 | $8.58 | $8.35 | $8.54 | +$0.16 | +1.91% | 457,092 | $8.50 | $8.35 $8.58 |
| Sep 30, 2026 | $8.98 | $8.99 | $8.37 | $8.38 | $-0.40 | -4.56% | 634,780 | $8.51 | $8.37 $8.99 |
| Sep 29, 2026 | $8.66 | $8.80 | $8.59 | $8.78 | +$0.06 | +0.69% | 602,979 | $8.72 | $8.59 $8.80 |
| Sep 28, 2026 | $8.25 | $8.86 | $8.07 | $8.72 | +$0.43 | +5.19% | 488,859 | $8.65 | $8.07 $8.86 |
| Sep 25, 2026 | $8.38 | $8.52 | $8.19 | $8.29 | $-0.03 | -0.36% | 481,049 | $8.32 | $8.19 $8.52 |
| Sep 24, 2026 | $8.63 | $8.73 | $8.28 | $8.32 | $-0.36 | -4.15% | 426,063 | $8.40 | $8.28 $8.73 |
| Sep 23, 2026 | $8.94 | $8.97 | $8.67 | $8.68 | $-0.31 | -3.45% | 357,843 | $8.73 | $8.67 $8.97 |
| Sep 22, 2026 | $8.72 | $9.09 | $8.70 | $8.99 | +$0.48 | +5.64% | 445,501 | $8.96 | $8.70 $9.09 |
| Sep 21, 2026 | $8.59 | $8.80 | $8.46 | $8.51 | $-0.07 | -0.82% | 363,158 | $8.55 | $8.46 $8.80 |
| Sep 18, 2026 | $8.41 | $8.60 | $8.25 | $8.58 | +$0.12 | +1.42% | 1,830,892 | $8.54 | $8.25 $8.60 |
| Sep 17, 2026 | $8.39 | $8.56 | $8.23 | $8.46 | +$0.22 | +2.67% | 404,760 | $8.45 | $8.23 $8.56 |
| Sep 16, 2026 | $8.35 | $8.50 | $8.20 | $8.24 | $-0.09 | -1.08% | 398,337 | $8.30 | $8.20 $8.50 |
| Sep 15, 2026 | $8.86 | $8.86 | $8.30 | $8.33 | $-0.53 | -5.98% | 323,437 | $8.40 | $8.30 $8.86 |
| Sep 14, 2026 | $8.95 | $8.99 | $8.79 | $8.86 | $-0.07 | -0.78% | 374,872 | $8.87 | $8.79 $8.99 |
| Sep 11, 2026 | $9.06 | $9.14 | $8.77 | $8.93 | $-0.09 | -1.00% | 376,276 | $8.92 | $8.77 $9.14 |
| Sep 10, 2026 | $9.25 | $9.26 | $8.97 | $9.02 | $-0.28 | -3.01% | 310,913 | $9.08 | $8.97 $9.26 |
| Sep 9, 2026 | $9.40 | $9.50 | $9.22 | $9.30 | $-0.24 | -2.52% | 294,558 | $9.30 | $9.22 $9.50 |
| Sep 8, 2026 | $9.60 | $9.67 | $9.35 | $9.54 | $-0.28 | -2.85% | 305,441 | $9.57 | $9.35 $9.67 |
| Sep 4, 2026 | $9.50 | $9.87 | $9.48 | $9.82 | +$0.22 | +2.29% | 383,928 | $9.76 | $9.48 $9.87 |
| Sep 3, 2026 | $9.77 | $9.78 | $9.51 | $9.60 | $-0.09 | -0.88% | 277,056 | $9.63 | $9.51 $9.78 |
| Sep 2, 2026 | $9.64 | $9.75 | $9.37 | $9.69 | +$0.08 | +0.78% | 340,538 | $9.63 | $9.37 $9.75 |
| Sep 1, 2026 | $9.28 | $9.63 | $9.26 | $9.61 | +$0.26 | +2.78% | 267,670 | $9.52 | $9.26 $9.63 |
| Aug 31, 2026 | $9.26 | $9.40 | $9.10 | $9.35 | +$0.02 | +0.21% | 333,769 | $9.30 | $9.10 $9.40 |
| Aug 28, 2026 | $9.02 | $9.48 | $8.95 | $9.33 | +$0.24 | +2.64% | 498,115 | $9.31 | $8.95 $9.48 |
| Aug 27, 2026 | $9.16 | $9.24 | $8.95 | $9.09 | $-0.16 | -1.73% | 338,922 | $9.06 | $8.95 $9.24 |
| Aug 26, 2026 | $9.40 | $9.40 | $9.15 | $9.25 | $-0.17 | -1.80% | 289,040 | $9.26 | $9.15 $9.40 |