Prothena Corp. Plc (PRTA)
8.46
+0.11
(+1.32%)
USD |
NASDAQ |
Oct 19, 15:28
Prothena Market Cap : 437.76M for Oct. 19, 2026
Market Cap Chart
Historical Market Cap Data
| Date | Value |
|---|---|
| October 16, 2026 | 432.06M |
| October 15, 2026 | 439.83M |
| October 14, 2026 | 433.10M |
| October 13, 2026 | 432.58M |
| October 12, 2026 | 436.20M |
| October 09, 2026 | 457.42M |
| October 08, 2026 | 445.52M |
| October 07, 2026 | 438.79M |
| October 06, 2026 | 414.99M |
| October 05, 2026 | 427.93M |
| October 02, 2026 | 432.58M |
| October 01, 2026 | 441.90M |
| September 30, 2026 | 433.62M |
| September 29, 2026 | 454.32M |
| September 28, 2026 | 451.21M |
| September 25, 2026 | 428.96M |
| September 24, 2026 | 430.51M |
| September 23, 2026 | 449.14M |
| September 22, 2026 | 465.18M |
| September 21, 2026 | 440.34M |
| September 18, 2026 | 443.97M |
| September 17, 2026 | 437.76M |
| September 16, 2026 | 426.37M |
| September 15, 2026 | 431.03M |
| September 14, 2026 | 458.45M |
| Date | Value |
|---|---|
| September 11, 2026 | 462.08M |
| September 10, 2026 | 466.73M |
| September 09, 2026 | 481.22M |
| September 08, 2026 | 493.64M |
| September 04, 2026 | 508.13M |
| September 03, 2026 | 496.75M |
| September 02, 2026 | 501.14M |
| September 01, 2026 | 497.26M |
| August 31, 2026 | 483.81M |
| August 28, 2026 | 482.77M |
| August 27, 2026 | 470.36M |
| August 26, 2026 | 478.63M |
| August 25, 2026 | 487.43M |
| August 24, 2026 | 485.88M |
| August 21, 2026 | 488.98M |
| August 20, 2026 | 467.25M |
| August 19, 2026 | 480.70M |
| August 18, 2026 | 450.69M |
| August 17, 2026 | 459.49M |
| August 14, 2026 | 458.45M |
| August 13, 2026 | 469.84M |
| August 12, 2026 | 479.15M |
| August 11, 2026 | 477.08M |
| August 10, 2026 | 471.91M |
| August 07, 2026 | 453.28M |
Market Capitalization Definition
Market Capitalization measures the total value of a company based on their stock price multiplied by the shares outstanding. This metric is important because it gives you an idea of the size of a company, and how the size has changed over time. When studying companies from a relative basis, it would make sense to compare companies that have a similar market capitalization because factors like market share, economies of scale, and business models would also be similar.
Market Cap Range, Past 5 Years
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Market Cap Benchmarks
| Alkermes Plc | 7.205B |
| Amarin Corp. Plc | 240.90M |
| Agenus, Inc. | 263.36M |
| Amgen, Inc. | 230.26B |
| Anika Therapeutics, Inc. | 271.67M |
Market Cap Related Metrics
| PS Ratio | 8.297 |
| Price to Book Value | 1.526 |
| Price | 8.46 |
| Earnings Yield | -9.83% |