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 Video: Compound Annual Growth Rate (CAGR) Definition
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|
| Date |
Open |
High |
Low |
Close |
Volume |
| 05/15/2025 |
$6.90 |
$6.92 |
$6.46 |
$6.71 |
1.12M | | 05/16/2025 |
$6.71 |
$7.33 |
$6.65 |
$7.18 |
1.17M | | 05/19/2025 |
$7.11 |
$7.41 |
$7.00 |
$7.40 |
781.40K | | 05/20/2025 |
$7.45 |
$7.58 |
$7.23 |
$7.29 |
1.25M | | 05/21/2025 |
$7.16 |
$7.24 |
$6.62 |
$6.82 |
1.14M |
|
|
| Prothena Corporation plc is an Ireland-based late-stage clinical biotechnology company. Co. is engaged in protein dysregulation and a pipeline of investigational therapeutics for rare peripheral amyloid diseases. Co. is advancing a pipeline of therapeutic candidates for a range of indications and targets to integrate scientific insights around neurological dysfunction and the biology of misfolded proteins. Co.'s pipeline includes both wholly owned and partnered programs being developed for the potential treatment of diseases, including AL amyloidosis, ATTR amyloidosis, Alzheimer's disease, Parkinson's disease and a range of other neurodegenerative diseases. | |
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Prothena (PRTA) has the following price history information. Looking back at PRTA historical stock prices for the last five trading days, on May 15, 2025, PRTA opened at $6.90, traded as high as $6.92 and as low as $6.46, and closed at $6.71. Trading volume was a total of 1.12M shares. On May 16, 2025, PRTA opened at $6.71, traded as high as $7.33 and as low as $6.65, and closed at $7.18. Trading volume was a total of 1.17M shares. On May 19, 2025, PRTA opened at $7.11, traded as high as $7.41 and as low as $7.00, and closed at $7.40. Trading volume was a total of 781.40K shares. On May 20, 2025, PRTA opened at $7.45, traded as high as $7.58 and as low as $7.23, and closed at $7.29. Trading volume was a total of 1.25M shares. On May 21, 2025, PRTA opened at $7.16, traded as high as $7.24 and as low as $6.62, and closed at $6.82. Trading volume was a total of 1.14M shares.
PRTA Historical Stock Prices By Date:
Below, we examine the compound annual growth rate — CAGR for short — of an investment into Prothena shares, starting with a $10,000 purchase of PRTA, and working forward through the historical stock price information to today.
Growth of $10,000.00
Without Dividends Reinvested
|
| Start date: |
05/26/2015 |
|
| End date: |
05/21/2025 |
|
| Start price/share: |
$33.91 |
|
| End price/share: |
$6.82 |
|
| Dividends collected/share: |
$0.00 |
|
| Total return: |
-79.89% |
|
| Average Annual Total Return: |
-14.83% |
|
| Starting investment: |
$10,000.00 |
|
| Ending investment: |
$2,010.24 |
|
| Years: |
9.99 |
|
|
|
| Date |
Close |
| 05/15/2025 | $6.71 | | 05/16/2025 | $7.18 | | 05/19/2025 | $7.40 | | 05/20/2025 | $7.29 | | 05/21/2025 | $6.82 |
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