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Prothena Corporation plc (PRTA)
NASDAQ: PRTA · Real-Time Price · USD
9.49
-0.18 (-1.86%)
May 12, 2026, 11:23 AM EDT - Market open

Prothena Corporation Ratios and Metrics

Millions USD. Fiscal year is Jan - Dec.
Fiscal Year
CurrentFY 2025FY 2024FY 2023FY 2022FY 2021
Period Ending
May '26 Dec '25 Dec '24 Dec '23 Dec '22 Dec '21
Market Cap
4975147461,9513,1392,305
Market Cap Growth
-4.34%-31.04%-61.79%-37.86%36.19%380.76%
Enterprise Value
184.45212.06282.351,3432,4291,732
Last Close Price
9.499.5513.8536.3460.2549.40
PE Ratio
--2.11-6.10-13.17-24.3935.80
Forward PE
-88.34----
PS Ratio
8.7453.095.5221.3558.2411.49
PB Ratio
1.641.831.533.485.054.95
P/TBV Ratio
1.641.831.533.454.595.14
P/FCF Ratio
--3.14-4.96-14.27-28.7325.05
P/OCF Ratio
--3.14-4.97-14.57-28.8524.89
EV/Sales Ratio
3.1821.902.0914.7045.068.64
EV/EBITDA Ratio
--0.99-1.84-7.06-18.5723.70
EV/EBIT Ratio
--0.99-1.83-7.03-18.4624.07
EV/FCF Ratio
--1.30-1.88-9.82-22.2218.82
Debt / Equity Ratio
0.020.020.020.0200.01
Debt / EBITDA Ratio
-0.06-0.04-0.07-0.06-0.050.17
Debt / FCF Ratio
-0.09-0.05-0.07-0.09-0.060.13
Net Debt / Equity Ratio
-1.03-1.07-0.95-1.08-1.13-1.22
Net Debt / EBITDA Ratio
2.721.403.003.195.38-7.75
Net Debt / FCF Ratio
3.951.833.064.446.44-6.16
Asset Turnover
0.170.020.220.130.080.43
Quick Ratio
10.137.539.7210.9714.1717.31
Current Ratio
10.437.7210.0111.2414.3417.48
Return on Equity (ROE)
-50.98%-63.62%-23.34%-24.85%-21.50%20.61%
Return on Assets (ROA)
-49.83%-59.70%-23.58%-24.07%-17.92%14.23%
Return on Invested Capital (ROIC)
-1637.45%-820.49%-318.89%-538.51%-512.57%300.13%
Return on Capital Employed (ROCE)
-39.46%-54.72%-27.16%-28.36%-20.49%16.30%
Earnings Yield
-29.86%-47.43%-16.39%-7.59%-4.10%2.79%
FCF Yield
-16.09%-31.85%-20.17%-7.01%-3.48%3.99%
Buyback Yield / Dilution
0.00%-0.11%-1.04%-12.34%2.26%-21.42%
Total Shareholder Return
0.00%-0.11%-1.04%-12.34%2.26%-21.42%
Updated May 7, 2026. Data Source: Fiscal.ai. Standard template. Financial Sources.
SEC Filings: 10-K · 10-Q