Annual Book Value
$486.93M$74.44M-13.26%
Summary
- Current Value
- As of today, PRTA annual book value is $486.93M, down -13.26% on
- Historical Performance
- PRTA annual book value is up +4.48% over the past 3 years, and up +78.41% over the past 5 years
- All-Time High Comparison
- PRTA annual book value is currently -21.72% below its historical high of $622.04M set on
- 3-Year Low Comparison
- PRTA annual book value is at its 3-year low
- Sector Comparison
- PRTA annual book value is higher than 80.15% of companies in Healthcare sector
Book Value Chart
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Series
SUGGESTED SERIES
Performance
| Metric | Date | Value | 1Y | 3Y | 5Y | 15Y |
|---|---|---|---|---|---|---|
| Annual Book Value | $486.93M | -13.3% | +4.5% | +78.4% | +10000.0% | |
| Quarterly Book Value | $294.99M | -44.8% | -27.1% | +40.8% | – | |
| Price | $9.17 | -35.2% | -82.5% | -28.5% | – | |
| $547.11M | -21.4% | -10.2% | +30.5% | +10000.0% | ||
| $60.18M | -55.4% | -58.0% | -58.9% | +1780.7% | ||
| 1.67 | +6.4% | -62.0% | -39.9% | – | ||
| $486.93M | -13.3% | +4.5% | +78.4% | +10000.0% | ||
| Market Cap | $494M | -35.2% | -81.9% | -3.5% | – |
Book Value Highs
| Period | High | Date | Current |
|---|---|---|---|
| 3Y | $622.04M | N/A | -21.7% |
| 5Y | $622.04M | -21.7% | |
| All | $622.04M | -21.7% |
Book Value Lows
| Period | Low | Date | Current |
|---|---|---|---|
| 3Y | $486.93M | at low | |
| 5Y | $184.01M | N/A | +164.6% |
| All | -$6.40M | +7708.2% |
Book Value History
FAQ
What is the current annual book value of PRTA?
As of today, PRTA annual book value is $486.93M
What is 1-year change in PRTA annual book value?
PRTA annual book value is down -13.26% year-over-year
What is 3-year change in PRTA annual book value?
PRTA annual book value is up +4.48% over the past 3 years
How far is PRTA annual book value from its all-time high?
PRTA annual book value is currently -21.72% below its historical high of $622.04M set on December 31, 2022
How does PRTA annual book value rank versus sector peers?
PRTA annual book value is higher than 80.15% of companies in Healthcare sector
When is PRTA next annual earnings release?
The next annual earnings release for PRTA is on
Quarterly Book Value
$294.99M$29.34M-9.05%
Summary
- Current Value
- As of today, PRTA quarterly book value is $294.99M, down -9.05% on
- Historical Performance
- PRTA quarterly book value is down -44.80% year-over-year, and down -27.10% over the past 3 years
- All-Time High Comparison
- PRTA quarterly book value is currently -52.58% below its historical high of $622.04M set on
- 3-Year Low Comparison
- PRTA quarterly book value is at its 3-year low
- Sector Comparison
- PRTA quarterly book value is higher than 72.70% of companies in Healthcare sector
Performance
| Metric | Date | Value | 3M | 1Y | 3Y | 5Y |
|---|---|---|---|---|---|---|
| Quarterly Book Value | $294.99M | -9.1% | -44.8% | -27.1% | +40.8% | |
| Annual Book Value | $486.93M | – | -13.3% | +4.5% | +78.4% | |
| Price | $9.17 | -11.0% | -35.2% | -82.5% | -28.5% | |
| $352.63M | -11.6% | -40.8% | -36.4% | -0.9% | ||
| $57.64M | -22.9% | -5.3% | -61.5% | -60.6% | ||
| 1.67 | -11.2% | +6.4% | -62.0% | -39.9% | ||
| $294.99M | -9.1% | -44.8% | -27.1% | +40.8% | ||
| Market Cap | $494M | -11.0% | -35.2% | -81.9% | -3.5% |
Quarterly Book Value Highs
| Period | High | Date | Current |
|---|---|---|---|
| 1Y | $486.93M | N/A | -39.4% |
| 3Y | $622.04M | N/A | -52.6% |
| 5Y | $622.04M | -52.6% | |
| All | $622.04M | -52.6% |
Quarterly Book Value Lows
| Period | Low | Date | Current |
|---|---|---|---|
| 1Y | $294.99M | at low | |
| 3Y | $294.99M | at low | |
| 5Y | $184.01M | N/A | +60.3% |
| All | -$3.10M | +9615.8% |
Quarterly Book Value History
FAQ
What is the current quarterly book value of PRTA?
As of today, PRTA quarterly book value is $294.99M
What is PRTA quarterly book value most recent change?
PRTA quarterly book value was down -9.05% on September 30, 2025
What is 1-year change in PRTA quarterly book value?
PRTA quarterly book value is down -44.80% year-over-year
How far is PRTA quarterly book value from its all-time high?
PRTA quarterly book value is currently -52.58% below its historical high of $622.04M set on December 31, 2022
How does PRTA quarterly book value rank versus sector peers?
PRTA quarterly book value is higher than 72.70% of companies in Healthcare sector
When is PRTA next earnings release?
The next earnings release for PRTA is on
Book Value Formula
Book Value = −
Data Sources & References
- PRTA Official Website www.prothena.com
- Most Recent Quarterly Report (10-Q) www.sec.gov/Archives/edgar/data/1559053/000155905325000044/0001559053-25-000044-index.htm
- Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1559053/000155905325000009/0001559053-25-000009-index.htm
- PRTA Profile on Yahoo Finance finance.yahoo.com/quote/PRTA
- PRTA Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/prta