PTGX (Protagonist Therapeutics) Forward PE Ratio: 31.48 (As of Aug. 04, 2026)

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PTGX Protagonist Therapeutics Inc PTGX
47 GF Score
Price $135.81
GF Value $71.71
Valuation Significantly Overvalued
! 8 Warning Signs
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What is Protagonist Therapeutics Forward PE Ratio?

Protagonist Therapeutics PTGX +2.58% 47 Forward PE Ratio is 31.48 as of Aug. 04, 2026. GuruFocus rates PTGX with a GF Score™ of 47/100 and a GF Value™ of $71.71 (Significantly Overvalued). The stock has 8 warning signs investors should review. Among 354 Biotechnology companies, Protagonist Therapeutics ranks worse than 59.6% on this metric.

Protagonist Therapeutics's Forward PE Ratio for today is 31.48.

Protagonist Therapeutics's PE Ratio without NRI for today is 0.00.

Protagonist Therapeutics's PE Ratio (TTM) for today is 0.00.


Protagonist Therapeutics  (NAS:PTGX) Forward PE Ratio Explanation

The Forward PE Ratio of a company is often used to compare current earnings to estimated future earnings, as well as gaining a clearer picture of what earnings will look like without charges and other accounting adjustments. If earnings are expected to grow in the future, the Forward PE Ratio will be lower than the current PE Ratio. This measure is also used to compare one company to another with a forward-looking focus.

Trailing PE Ratio relies on what is already done. It uses the current share price and divides by the total EPS (Basic) over the past 12 months. PE Ratio can be affected by Non Operating Income such as the sale of part of businesses. This may increase for the current year or quarter dramatically. But it cannot be repeated over and over. Therefore PE Ratio without NRI is a more accurate indication of valuation than PE Ratio .


Protagonist Therapeutics Forward PE Ratio Related Terms


Protagonist Therapeutics Forward PE Ratio Historical Data

* Premium members only.

The historical data trend for Protagonist Therapeutics's Forward PE Ratio can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Protagonist Therapeutics Forward PE Ratio Chart

Protagonist Therapeutics Annual Data
Trend
Forward PE Ratio

Protagonist Therapeutics Quarterly Data
2024-03 2024-06 2024-09 2026-03
Forward PE Ratio 16.08 26.67 25.64 30.30

PTGX vs CRNX, SYRE, TGTX: Forward PE Ratio Comparison

For the Biotechnology subindustry, Protagonist Therapeutics's Forward PE Ratio, along with its competitors' market caps and Forward PE Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Protagonist Therapeutics Forward PE Ratio vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Protagonist Therapeutics's Forward PE Ratio distribution charts can be found below:

* The bar in red indicates where Protagonist Therapeutics's Forward PE Ratio falls into.


PTGX
47GF Score
Protagonist Therapeutics Inc PTGX
Forward PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Protagonist Therapeutics Forward PE Ratio Calculation

It's a measure of the price-to-earnings ratio (PE Ratio) using forecasted earnings for the calculation. While the earnings used are just an estimate and are not as reliable as current earnings data, there is still benefit in estimated P/E analysis. The forecasted earnings used in the formula can either be for the next 12 months or for the next full-year fiscal period.

Frequently Asked Questions Learn more about Forward PE Ratio →
What does a Forward PE Ratio of 31.48 mean?
Protagonist Therapeutics (PTGX) has a Forward PE Ratio of 31.48 as of Aug. 04, 2026. Forward P/E ratio is the share price dividend by the expected per-share earnings in the next 12 months. View historical data on Protagonist Therapeutics and its competitors. According to the industry distribution chart, Protagonist Therapeutics ranks #211 out of 354 companies in the Biotechnology industry, placing it in the top 59.6%.
Is Protagonist Therapeutics' Forward PE Ratio too high?
Protagonist Therapeutics' current Forward PE Ratio is 31.48. The Biotechnology industry median Forward PE Ratio is 22.33. Protagonist Therapeutics' value of 31.48 is 41% above this industry median. Based on the distribution chart, Protagonist Therapeutics ranks #211 out of 354 companies in the Biotechnology industry, which is below the industry midpoint. Overall, Protagonist Therapeutics has a GF Score™ of 47/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Protagonist Therapeutics' Forward PE Ratio compare to CRNX and SYRE?
According to the Biotechnology industry distribution chart, Protagonist Therapeutics ranks #211 out of 354 companies for Forward PE Ratio. This places Protagonist Therapeutics in the lower half of its industry. The industry median Forward PE Ratio is 22.33. Protagonist Therapeutics' value of 31.48 is 41% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Forward PE Ratio for a Biotechnology company?
The median Forward PE Ratio among Biotechnology companies is 22.33, based on 354 companies in the industry. Companies in the top quartile (top 25%) have a Forward PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Forward PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Protagonist Therapeutics's current Forward PE Ratio of 31.48 is 41% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Forward PE Ratio mean?
A high Forward PE Ratio can signal that a stock is expensive relative to its fundamentals. Forward P/E ratio is the share price dividend by the expected per-share earnings in the next 12 months. View historical data on Protagonist Therapeutics and its competitors. For the Biotechnology industry, the median Forward PE Ratio is 22.33 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Protagonist Therapeutics's current Forward PE Ratio is 31.48. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Protagonist Therapeutics stock overvalued right now?
Based on GuruFocus' analysis, Protagonist Therapeutics (PTGX) is currently considered Significantly Overvalued. The stock's GF Value™ is $71.71, compared to a current price of $135.81 — trading 89.4% above its estimated fair value. The current Forward PE Ratio is 31.48 and 41% above the Biotechnology industry median of 22.33. Protagonist Therapeutics' overall GF Score™ is 47/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Forward PE Ratio calculated?
Forward PE Ratio is calculated from a company's financial statements. For Protagonist Therapeutics (PTGX), the current Forward PE Ratio is 31.48 as of Aug. 04, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Protagonist Therapeutics (PTGX) Overvalued in 2026?

Based on GuruFocus' analysis, Protagonist Therapeutics stock appears to be overvalued. The current stock price of $135.81 is trading 89.4% above its estimated GF Value™ of $71.71. GuruFocus considers Protagonist Therapeutics to be Significantly Overvalued.

Key valuation signals for PTGX:

  • Forward PE Ratio: 31.48
  • GF Value™: $71.71 vs. price of $135.81 (89.4% above fair value)
  • GF Score™: 47/100 with 8 warning signs
  • Industry Position: 41% above the Biotechnology median (#211 of 354)

No single metric tells the full story. See the PTGX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Protagonist Therapeutics Business Description

Address 7707 Gateway Boulevard, Suite 140, Newark, CA, USA, 94560
Protagonist Therapeutics Inc is a biopharmaceutical company engaged in the discovery and development of peptide-based therapeutics using its proprietary technology platform. The company focuses on three therapeutic areas: inflammation and immunology, hematology, and metabolic diseases. Its pipeline includes clinical-stage and preclinical candidates such as rusfertide for polycythemia vera, icotrokinra for inflammatory diseases, and other programs targeting IL-17, obesity, and iron metabolism disorders, developed through internal research and strategic collaborations.
47GF Score

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Forward PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$135.81
Price
$71.71
GF Value