PTGX
Protagonist Therapeutics
$135.56
−$0.54 (−0.4%)Jul 27, 2026
Key metrics
The numbers that frame PTGX today
- Market cap
- $8.72B
- P/E (TTM)
- -76.0
- EV / FCF
- -72.4
- Gross margin
- 100%
- EV / Sales
- 115.2
- ROIC
- -22.4%
- Div yield
- 0%
- Debt / equity
- 0.0
- 52wk Low
- $50.49
- 52wk High
- $143.26
Growth
Revenue and earnings trend for PTGX
RevenueNet income
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Revenue and earnings trends, margins and the multi-year trajectory - free with an account.
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Already a member? Log inCash flow & returns
Free cash flow and financial health
Free cash flowNet debt
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Free cash flow detail, returns on capital and the balance-sheet trend - free with an account.
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Recent insider buying and selling activity
PurchasesSales
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Already a member? Log inFrequently asked questions
Plain-English answers about PTGX
Is Protagonist Therapeutics a good buy?
Yes. Protagonist Therapeutics has excellent momentum, and it outweighs the weak quality here. Growth looks excellent, which supports the long-term business case. We think Protagonist Therapeutics is selling at a high price, which cuts against the buy case.
What is the market capitalization of PTGX?
Protagonist Therapeutics's market capitalization is $8.72B.
What is the P/E ratio for PTGX stock?
Protagonist Therapeutics's current P/E ratio is -76.
What is the 52-week high for PTGX stock?
The 52-week high for Protagonist Therapeutics is $143.26. The current close of $135.56 is 5.4% below that high.
What is the 52-week low for PTGX stock?
The 52-week low for Protagonist Therapeutics is $50.49. The current close of $135.56 is 168.5% above that low.
Does PTGX stock pay dividends?
Protagonist Therapeutics does not currently show a dividend per share in the company data.
What is the Debt / Equity ratio for PTGX?
Protagonist Therapeutics's Debt / Equity ratio is 0.02.