Prothena Corp. Plc (PRTA)
8.37
+0.04
(+0.48%)
USD |
NASDAQ |
Sep 16, 14:55
Prothena Market Cap : 433.10M for Sept. 16, 2026
Market Cap Chart
Sep '18
Jan '19
May '19
285.00
270.00
255.00
240.00
Historical Market Cap Data
| Date | Value |
|---|---|
| September 15, 2026 | 431.03M |
| September 14, 2026 | 458.45M |
| 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 |
| Date | Value |
|---|---|
| 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 |
| 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 |
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
--
Minimum
--
Maximum
--
Average
--
Median
Market Cap Benchmarks
| Alkermes Plc | 7.719B |
| Amarin Corp. Plc | 292.56M |
| Agenus, Inc. | 305.98M |
| Amgen, Inc. | 203.32B |
| Anika Therapeutics, Inc. | 280.51M |
Market Cap Related Metrics
| PS Ratio | 8.209 |
| Price to Book Value | 1.510 |
| Price | 8.37 |
| Earnings Yield | -9.93% |