Prothena Corp. Plc (PRTA)
9.35
+0.28
(+3.09%)
USD |
NASDAQ |
May 20, 16:00
9.35
0.00 (0.00%)
After-Hours: 20:00
Prothena Market Cap : 489.50M for May 20, 2026
Market Cap Chart
Sep '18
Jan '19
May '19
285.00
270.00
255.00
240.00
Historical Data
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 | 6.165B |
| Amarin Corp. Plc | 300.49M |
| Novo Nordisk A/S | 199.48B |
| Precigen, Inc. | 1.521B |
| Clene, Inc. | 81.03M |
Market Cap Related Metrics
| PS Ratio | 8.698 |
| PEG Ratio | -0.0940 |
| Price to Book Value | 1.566 |
| Price | 9.35 |
| Earnings Yield | -30.07% |
| PEGY Ratio | -0.0940 |