Three independent discounted-cash-flow-style models value Prothena Corporation plc Ordinary Shares every trading day. 0 of 3 currently price PRTA above its market price.
| Free Cash Flow model | $5.41 |
| Excess Profit model | $4.48 |
| Residual Earnings model | $-0.31 |
| Dividend Discount model | — |
| Piotroski F-Score | 2 / 9 |
| Return on invested capital | -85.4% |
| Net debt / EBITDA | — |
| Gross margin | +100.0% |
| Revenue CAGR | -43.6% |
| Cash conversion | — |
| Dividend yield | — |
| Buyback yield | -0.1% |
These are StockKitty's default assumptions. In the app, the models recompute live as you adjust growth, discount rates, and margins — and the AI explains the bull case, bear case, and quality picture.
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