Prothena Corp. Plc (PRTA)
9.265
-0.16
(-1.65%)
USD |
NASDAQ |
Aug 26, 16:00
9.265
0.00 (0.00%)
After-Hours: 17:05
Prothena Market Cap : 479.41M for Aug. 26, 2026
Market Cap Chart
Sep '18
Jan '19
May '19
285.00
270.00
255.00
240.00
Historical Market Cap Data
| Date | Value |
|---|---|
| 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 |
| August 06, 2026 | 443.97M |
| August 05, 2026 | 439.31M |
| August 04, 2026 | 439.31M |
| August 03, 2026 | 442.13M |
| July 31, 2026 | 430.99M |
| July 30, 2026 | 446.38M |
| July 29, 2026 | 454.34M |
| July 28, 2026 | 454.34M |
| July 27, 2026 | 461.77M |
| July 24, 2026 | 464.43M |
| July 23, 2026 | 452.75M |
| July 22, 2026 | 447.97M |
| Date | Value |
|---|---|
| July 21, 2026 | 464.43M |
| July 20, 2026 | 460.18M |
| July 17, 2026 | 459.65M |
| July 16, 2026 | 449.56M |
| July 15, 2026 | 447.44M |
| July 14, 2026 | 458.59M |
| July 13, 2026 | 468.67M |
| July 10, 2026 | 490.43M |
| July 09, 2026 | 511.66M |
| July 08, 2026 | 522.81M |
| July 07, 2026 | 513.79M |
| July 06, 2026 | 504.23M |
| July 02, 2026 | 514.32M |
| July 01, 2026 | 508.48M |
| June 30, 2026 | 519.63M |
| June 29, 2026 | 529.18M |
| June 26, 2026 | 531.83M |
| June 25, 2026 | 492.03M |
| June 24, 2026 | 498.93M |
| June 23, 2026 | 506.89M |
| June 22, 2026 | 485.66M |
| June 18, 2026 | 473.98M |
| June 17, 2026 | 450.63M |
| June 16, 2026 | 440.01M |
| June 15, 2026 | 432.58M |
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 | 8.238B |
| Amarin Corp. Plc | 302.01M |
| Agenus, Inc. | 351.37M |
| Amgen, Inc. | 238.03B |
| Anika Therapeutics, Inc. | 290.68M |
Market Cap Related Metrics
| PS Ratio | 9.086 |
| Price to Book Value | 1.671 |
| Price | 9.265 |
| Earnings Yield | -8.97% |