Prothena Corporation plc

Market cap or market capitalization is the total market value of all of a company's outstanding shares.

The divided yield displayed as a percentage is the amount of money a company pays shareholders for owning a share of its stock divided by its current stock price

The price-to-book ratio is a company's current market price to its Book Value. Traditionally, any value under 1.0 is considered a good P/B value, indicating a potentially undervalued stock.

The book value of a stock is theoretically the amount of money that would be paid to shareholders if the company was liquidated and paid off all of its liabilities.

The price-earnings ratio is a company's share price to the company's Earnings per Share. The ratio is used for evaluating companies and to find out whether they are overvalued or undervalued.

Earnings per share (EPS) is a company's net profit divided by the number of common shares it has outstanding. EPS indicates how much money a company makes for each share of its stock, and is widely used metric to estimate corporate value

Enterprise Value is a measure of a company's total value, often used as a more comprehensive alternative to equity market capitalization. Enterprise value includes in its calculation the market capitalization of a company but also short-term and long-term debt as well as any cash on the company's balance sheet.

Return on equity (ROE) is a measure of financial performance calculated by dividing net income by shareholder's equity