As at Apr 30, 2025, the PTGX stock has a PE ratio of 10.25. This is based on the current EPS of $4.47 and the stock price of $45.82 per share. A decrease of 13% has been seen in the P/E ratio compared to the average of 11.8 of the last 4 quarters.
PTGX PE ratio history
The mean historical PE ratio of Protagonist Therapeutics over the last eight years is 20.12. The current 10.25 PE ratio is 49% below the historical average. Over the past eight years, PTGX's PE ratio was at its highest in the Jun 2017 quarter at 51.41, with a price of $11.31 and an EPS of $0.22. The Dec 2024 quarter recorded the bottom point at 8.64, with a price of $38.6 and an EPS of $4.47.
Protagonist Therapeutics PE ratio by year
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| 2024 | 8.64 | N/A | $38.6 | $4.47 |
| 2023 | N/A | N/A | $22.93 | -$1.39 |
| 2022 | N/A | N/A | $10.91 | -$2.6 |
| 2021 | N/A | N/A | $34.2 | -$2.71 |
| 2020 | N/A | N/A | $20.16 | -$1.92 |
| 2019 | N/A | N/A | $7.05 | -$2.98 |
| 2018 | N/A | N/A | $6.73 | -$1.74 |
PTGX average PE ratio chart
PTGX PE vs peers
| Stock name | PE ratio | Market cap |
|---|---|---|
| PTGX Protagonist Therapeutics Inc | 10.07 | $2.76B |
| OLMA Olema Pharmaceuticals Inc | N/A | $351.23M |
| OMER Omeros Corp | N/A | $409.35M |
| VIVS VivoSim Labs Inc. | N/A | $2.84M |
| ORIC Oric Pharmaceuticals Inc | N/A | $399.88M |
| ORMP Oramed Pharmaceuticals Inc | N/A | $94.77M |
Frequently asked questions
What is Protagonist Therapeutics's PE ratio?
The price to earnings ratio for PTGX stock is 10.25 as of Apr 30, 2025.
What is the highest PE ratio for PTGX?
The highest quarterly PE ratio in the last eight years has been 51.41 and it was in the Jun 2017 quarter.
How does the current PE ratio for PTGX compare to its historical average?
PTGX's current price to earnings ratio is 49% below its 8-year historical average.
How is PTGX's PE ratio calculated (Protagonist Therapeutics PE ratio formula)?
To determine the PE ratio, divide the most recent stock price by the TTM earnings per share (EPS). As of today (Apr 30, 2025), Protagonist Therapeutics's stock price is $45.82. The earnings per share for the trailing twelve months (TTM) ending Dec 2024 is $4.47. Therefore, Protagonist Therapeutics's P/E ratio for today is 10.25. PE RATIO(10.25) = STOCK PRICE($45.82) / TTM EPS($4.47)
All PE ratio stats are based on quarterly TTM periods, unless otherwise specified. Data from 
and Sharadar.