Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
8.36
-0.18 (-2.11%)
Oct 2, 2026, 4:00 PM EDT - Market closed
Prothena Corporation Market Cap
Prothena Corporation has a market cap or net worth of $429.18 million as of October 2, 2026. Its market cap has decreased by -19.63% in one year.
Market Cap
429.18M
Enterprise Value
147.98M
1-Year Change
-19.63%
Ranking
Category
Stock Price
$8.36
ChartMarket Cap Chart
Since December 21, 2012, Prothena Corporation's market cap has increased from $127.30M to $429.18M, an increase of 237.14%. That is a compound annual growth rate of 9.21%.
| Date | Market Cap | % Change |
|---|---|---|
| Oct 2, 2026 | 429.20M | -16.51% |
| Dec 31, 2025 | 514.10M | -31.02% |
| Dec 31, 2024 | 745.30M | -61.78% |
| Dec 29, 2023 | 1.95B | -33.09% |
| Dec 30, 2022 | 2.91B | 26.63% |
| Dec 31, 2021 | 2.30B | 380.02% |
| Dec 31, 2020 | 479.50M | -24.08% |
| Dec 31, 2019 | 631.60M | 53.82% |
| Dec 31, 2018 | 410.60M | -71.51% |
| Dec 29, 2017 | 1.44B | -15.04% |
| Dec 30, 2016 | 1.70B | -20.98% |
| Dec 31, 2015 | 2.15B | 277.66% |
| Dec 31, 2014 | 568.50M | -1.92% |
| Dec 31, 2013 | 579.60M | 347.22% |
| Dec 31, 2012 | 129.60M | 1.81% |
| Dec 21, 2012 | 127.30M | - |
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Market Capitalization
Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.
Formula: Market Cap = Stock Price * Shares Outstanding
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