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DCF Valuation
Base-case fair value
$27.10
Intrinsic $36.14 · 25% MOS
Current price: $112.86
Base-case summary
Our base-case DCF for Protagonist Therapeutics, Inc (PTGX) projects 10 years of free cash flow growth at 8.0% for years 1–5 and 4.0% for years 6–10, anchored to a default 8% growth assumption, then applies a 2.5% perpetual growth rate and a 8.0% discount rate. Starting from the 3-year average of positive free cash flow ($81M) — TTM FCF was negative, this produces an intrinsic value of $36.14 per share. A 25% safety margin gives a fair value of $27.10, suggesting the stock is currently 76% overvalued against the $112.86 market price.
See 3 scenarios side by side
Conservative, Base, and Optimistic fair values, plus the sensitivity matrix and FCF history. Free account.
TTM FCF is negative (-$118M). Projecting from a negative base produces nonsensical results, so this model uses the 3-year average of positive FCF ($81M) as the base instead. Treat this valuation as a rough estimate — it assumes a return to historical profitability.
Model inputs
Free Cash Flow (3yr avg)
$81M
Cash & equivalents
$548M
Total debt
$10M
Shares outstanding
70M