Prothena Corp. Plc (PRTA)
8.32
-0.01
(-0.12%)
USD |
NASDAQ |
Sep 16, 10:13
Prothena Price : 8.32 for Sept. 16, 2026
Price Chart
Sep '18
Jan '19
May '19
285.00
270.00
255.00
240.00
Historical Price Data
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Sep 15, 2026 | 8.86 | 8.86 | 8.295 | 8.33 | 323439.0 |
| Sep 14, 2026 | 8.95 | 8.99 | 8.79 | 8.86 | 374873.0 |
| Sep 11, 2026 | 9.06 | 9.14 | 8.765 | 8.93 | 376276.0 |
| Sep 10, 2026 | 9.25 | 9.255 | 8.97 | 9.02 | 310913.0 |
| Sep 09, 2026 | 9.40 | 9.496 | 9.22 | 9.30 | 294558.0 |
| Sep 08, 2026 | 9.60 | 9.67 | 9.345 | 9.54 | 305441.0 |
| Sep 04, 2026 | 9.50 | 9.87 | 9.48 | 9.82 | 383928.0 |
| Sep 03, 2026 | 9.77 | 9.78 | 9.512 | 9.60 | 277056.0 |
| Sep 02, 2026 | 9.64 | 9.75 | 9.37 | 9.685 | 341056.0 |
| Sep 01, 2026 | 9.28 | 9.63 | 9.26 | 9.61 | 267669.0 |
| Aug 31, 2026 | 9.26 | 9.40 | 9.100 | 9.35 | 335150.0 |
| Aug 28, 2026 | 9.02 | 9.479 | 8.95 | 9.33 | 498115.0 |
| Aug 27, 2026 | 9.16 | 9.24 | 8.95 | 9.09 | 338922.0 |
| Aug 26, 2026 | 9.40 | 9.40 | 9.153 | 9.25 | 289040.0 |
| Aug 25, 2026 | 9.51 | 9.82 | 9.42 | 9.42 | 363714.0 |
| Aug 24, 2026 | 9.46 | 9.49 | 9.19 | 9.39 | 248124.0 |
| Aug 21, 2026 | 9.11 | 9.52 | 9.09 | 9.45 | 376045.0 |
| Aug 20, 2026 | 9.13 | 9.145 | 8.71 | 9.03 | 345968.0 |
| Aug 19, 2026 | 8.91 | 9.34 | 8.91 | 9.29 | 385539.0 |
| Aug 18, 2026 | 8.88 | 9.00 | 8.58 | 8.71 | 248561.0 |
| Aug 17, 2026 | 8.84 | 9.075 | 8.729 | 8.88 | 365922.0 |
| Aug 14, 2026 | 9.04 | 9.15 | 8.839 | 8.86 | 312601.0 |
| Aug 13, 2026 | 9.30 | 9.365 | 9.04 | 9.08 | 343057.0 |
| Aug 12, 2026 | 9.22 | 9.31 | 9.09 | 9.26 | 274927.0 |
| Aug 11, 2026 | 9.12 | 9.285 | 8.862 | 9.22 | 475252.0 |
Price Definition
The price of a security measures the cost to purchase 1 share of a security. For a company, price can be multiplied by shares outstanding to find the market capitalization (value of the company).
Price Range, Past 5 Years
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Median
Price Benchmarks
| Alkermes Plc | 46.43 |
| Amarin Corp. Plc | 14.05 |
| Agenus, Inc. | 7.17 |
| Amgen, Inc. | 374.94 |
| Anika Therapeutics, Inc. | 21.08 |
Price Related Metrics
| PS Ratio | 8.160 |
| Price to Book Value | 1.501 |
| Earnings Yield | -9.99% |
| Market Cap | 430.51M |