Prothena Corporation plc

PRTA· NASDAQ· Health Care· Pharmaceuticals, Biotechnology & Life Sciences

$8.46+2.67%

2026-09-17

Financials

Valuation Metrics

Prothena Corporation plc's Market Cap is $443M. At end of 2025 it was $514M. Ranked #2842 of 3,121 in US market (top 91%), #1257 of 1,463 on NASDAQ (top 86%), #228 of 266 in Pharmaceuticals, Biotechnology & Life Sciences (top 86%) by Market Cap.

Investment Metrics(as of 2026-09-18)

Metric	Value	Rank
Size
Market Cap	$443M	US#2,842/3,121 Sec#228/266
Revenue	$55M	US#2,765/3,121 Sec#145/266
Net Income	$-44M	US—/3,121 Sec—/266
Total Assets	$303M	US#2,913/3,121 Sec#208/266
Net Assets	$287M	US#2,544/3,121 Sec#161/266
Value
P/B	1.54x	US#923/3,121 Sec#35/266
P/S	8.12x	US#2,610/3,121 Sec#103/266
FCF Yield	-13.71%	US—/3,121 Sec—/266
Profitability
ROE	-15.33%	US#2,432/3,121 Sec#89/266
ROA	-14.54%	US#2,744/3,121 Sec#115/266
Op. Margin	-115.09%	US#2,746/3,121 Sec#127/266
Revenue Growth	427.32%	US#34/3,121 Sec#16/266
Financial Health
Debt Ratio	5.47%	US#43/3,121 Sec#16/266
Total Debt	$7M	US#2,873/3,121 Sec#209/266
FCF	$-61M	US#2,550/3,121 Sec#119/266
Cash	$288M	US#1,451/3,121 Sec#82/266
Current Ratio	25.05x	US#100/3,121 Sec#16/266
Performance
1Y Return	4.96%	US#1,650/3,121 Sec#177/266
1M Return	-2.87%	US#1,357/3,121 Sec#124/266
From 52W High	-28.31%	US#1,973/3,121 Sec#155/266
1Y MDD	-31.28%	US#1,511/3,121 Sec#98/266
Trading
Volume	397,657 shares	US#2,210/3,121 Sec#226/266
Trading Value	$3M	US#2,785/3,121 Sec#235/266
Per Share
EPS	$-0.84	US—/3,121 Sec—/266
BPS	$5.48	US#2,246/3,121 Sec#123/266