Historical Valuation
Prothena Corporation PLC (PRTA) is now in the Fair zone, suggesting that its current forward PS ratio of 5.27 is considered Fairly compared with the five-year average of 0.60. The fair price of Prothena Corporation PLC (PRTA) is between 8.11 to 26.96 according to relative valuation methord.
Relative Value
Fair Zone
8.11-26.96
Current Price：9.28
Fair
P/E
EV/EBITDA
EV/EBIT
P/S
P/OCF
P/FCF
1Y
3Y
5Y
Trailing
Forward
Prothena Corporation PLC (PRTA) has a current Price-to-Book (P/B) ratio of 1.68. Compared to its 3-year average P/B ratio of 2.75 , the current P/B ratio is approximately -38.95% higher. Relative to its 5-year average P/B ratio of 3.78, the current P/B ratio is about -55.57% higher. Prothena Corporation PLC (PRTA) has a Forward Free Cash Flow (FCF) yield of approximately -38.01%. Compared to its 3-year average FCF yield of -16.45%, the current FCF yield is approximately 130.98% lower. Relative to its 5-year average FCF yield of -10.13% , the current FCF yield is about 275.12% lower.
P/B
Median3y
2.75
Median5y
3.78
FCF Yield
Median3y
-16.45
Median5y
-10.13
Competitors Valuation Multiple
AI Analysis for PRTA
The average P/S ratio for PRTA competitors is 1.51, providing a benchmark for relative valuation. Prothena Corporation PLC Corp (PRTA.O) exhibits a P/S ratio of 5.27, which is 249.98% above the industry average. Given its robust revenue growth of 148.97%, this premium appears sustainable.
Performance Decomposition
AI Analysis for PRTA
1Y
3Y
5Y
Market capitalization of PRTA increased by 0.00% over the past 1 year. The primary factor behind the change was an decrease in Unknown from 0.00 to 0.00.
The secondary factor is the Unknown, contributed 0.00%to the performance.
Overall, the performance of PRTA in the past 1 year is driven by Unknown.
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Frequently Asked Questions
Is PRTA currently overvalued or undervalued?
Prothena Corporation PLC (PRTA) is now in the Fair zone, suggesting that its current forward PS ratio of 5.27 is considered Fairly compared with the five-year average of 0.60. The fair price of Prothena Corporation PLC (PRTA) is between 8.11 to 26.96 according to relative valuation methord.
What is Prothena Corporation PLC (PRTA) fair value?
PRTA's fair value is calculated using relative valuation, based on historical P/E and P/S ranges and their premiums/discounts relative to a competitor average , adjusted by weights. The fair price of Prothena Corporation PLC (PRTA) is between 8.11 to 26.96 according to relative valuation methord.
How does PRTA's valuation metrics compare to the industry average?
The average P/S ratio for PRTA's competitors is 1.51, providing a benchmark for relative valuation. Prothena Corporation PLC Corp (PRTA) exhibits a P/S ratio of 5.27, which is 249.98% above the industry average. Given its robust revenue growth of 148.97%, this premium appears sustainable.
What is the current P/B ratio for Prothena Corporation PLC (PRTA) as of Jan 10 2026?
As of Jan 10 2026, Prothena Corporation PLC (PRTA) has a P/B ratio of 1.68. This indicates that the market values PRTA at 1.68 times its book value.
What is the current FCF Yield for Prothena Corporation PLC (PRTA) as of Jan 10 2026?
As of Jan 10 2026, Prothena Corporation PLC (PRTA) has a FCF Yield of -38.01%. This means that for every dollar of Prothena Corporation PLC’s market capitalization, the company generates -38.01 cents in free cash flow.
What is the current Forward P/E ratio for Prothena Corporation PLC (PRTA) as of Jan 10 2026?
As of Jan 10 2026, Prothena Corporation PLC (PRTA) has a Forward P/E ratio of 85.11. This means the market is willing to pay $85.11 for every dollar of Prothena Corporation PLC’s expected earnings over the next 12 months.
What is the current Forward P/S ratio for Prothena Corporation PLC (PRTA) as of Jan 10 2026?
As of Jan 10 2026, Prothena Corporation PLC (PRTA) has a Forward P/S ratio of 5.27. This means the market is valuing PRTA at $5.27 for every dollar of expected revenue over the next 12 months.