Prothena Corporation plc (LON:0Y3M)

Prothena Corporation Statistics

Total Valuation

LON:0Y3M has a market cap or net worth of GBP 423.34 million. The enterprise value is 146.13 million.

Market Cap	423.34M
Enterprise Value	146.13M

Important Dates

The next estimated earnings date is Thursday, November 6, 2025.

Earnings Date	Nov 6, 2025
Ex-Dividend Date	n/a

Share Statistics

Current Share Class	53.83M
Shares Outstanding	n/a
Shares Change (YoY)	+0.25%
Shares Change (QoQ)	n/a
Owned by Insiders (%)	19.25%
Owned by Institutions (%)	71.47%
Float	40.09M

Valuation Ratios

PE Ratio	n/a
Forward PE	n/a
PS Ratio	56.09
PB Ratio	1.79
P/TBV Ratio	1.79
P/FCF Ratio	n/a
P/OCF Ratio	n/a
PEG Ratio	n/a

Enterprise Valuation

EV / Earnings	-0.66
EV / Sales	18.44
EV / EBITDA	n/a
EV / EBIT	n/a
EV / FCF	-1.04

Financial Position

The company has a current ratio of 5.68, with a Debt / Equity ratio of 0.03.

Current Ratio	5.68
Quick Ratio	5.48
Debt / Equity	0.03
Debt / EBITDA	n/a
Debt / FCF	-0.05
Interest Coverage	n/a

Financial Efficiency

Return on equity (ROE) is -66.85% and return on invested capital (ROIC) is -33.53%.

Return on Equity (ROE)	-66.85%
Return on Assets (ROA)	-29.79%
Return on Invested Capital (ROIC)	-33.53%
Return on Capital Employed (ROCE)	-75.17%
Revenue Per Employee	46,306
Profits Per Employee	-1.36M
Employee Count	163
Asset Turnover	0.02
Inventory Turnover	n/a

Taxes

In the past 12 months, LON:0Y3M has paid 30.10 million in taxes.

Income Tax	30.10M
Effective Tax Rate	n/a

Stock Price Statistics

The stock price has decreased by -34.56% in the last 52 weeks. The beta is -0.12, so LON:0Y3M's price volatility has been lower than the market average.

Beta (5Y)	-0.12
52-Week Price Change	-34.56%
50-Day Moving Average	9.39
200-Day Moving Average	9.59
Relative Strength Index (RSI)	57.10
Average Volume (20 Days)	1,381

Short Selling Information

Short Interest	n/a
Short Previous Month	n/a
Short % of Shares Out	n/a
Short % of Float	n/a
Short Ratio (days to cover)	4.52

Income Statement

In the last 12 months, LON:0Y3M had revenue of GBP 7.55 million and -221.10 million in losses. Loss per share was -4.11.

Revenue	7.55M
Gross Profit	-132.76M
Operating Income	-181.74M
Pretax Income	-191.00M
Net Income	-221.10M
EBITDA	-181.09M
EBIT	-181.74M
Loss Per Share	-4.11

Balance Sheet

The company has 271.11 million in cash and 7.14 million in debt, giving a net cash position of 263.97 million.

Cash & Cash Equivalents	271.11M
Total Debt	7.14M
Net Cash	263.97M
Net Cash Per Share	n/a
Equity (Book Value)	236.73M
Book Value Per Share	4.40
Working Capital	231.87M

Cash Flow

In the last 12 months, operating cash flow was -140.62 million and capital expenditures -131,382, giving a free cash flow of -140.75 million.

Operating Cash Flow	-140.62M
Capital Expenditures	-131,382
Free Cash Flow	-140.75M
FCF Per Share	n/a

Margins

Gross Margin	n/a
Operating Margin	-2,407.87%
Pretax Margin	-2,530.46%
Profit Margin	n/a
EBITDA Margin	n/a
EBIT Margin	n/a
FCF Margin	n/a

Dividends & Yields

LON:0Y3M does not appear to pay any dividends at this time.

Dividend Per Share	n/a
Dividend Yield	n/a
Dividend Growth (YoY)	n/a
Years of Dividend Growth	n/a
Payout Ratio	n/a
Buyback Yield	-0.25%
Shareholder Yield	-0.25%
Earnings Yield	-52.23%
FCF Yield	-33.25%

Fair Value

There are several formulas that can be used to estimate the intrinsic value of a stock.

Lynch Fair Value	n/a
Lynch Upside	n/a
Graham Number	n/a
Graham Upside	n/a

Stock Splits

This stock does not have any record of stock splits.

Last Split Date	n/a
Split Type	n/a
Split Ratio	n/a

Scores

LON:0Y3M has an Altman Z-Score of 0.79 and a Piotroski F-Score of 1. A Z-score under 3 suggests an increased risk of bankruptcy.

Altman Z-Score	0.79
Piotroski F-Score	1