PTGX (Protagonist Therapeutics) Market Cap: $7,883.29 Mil (As of Jul. 01, 2026)


PTGX Protagonist Therapeutics Inc PTGX
51 GF Score
Price $122.58
GF Value $58.69
Valuation Significantly Overvalued
! 7 Warning Signs
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What is Protagonist Therapeutics Market Cap?

Protagonist Therapeutics PTGX +0.78% 51 Market Cap is $7,883.29 Mil as of Jul. 01, 2026. GuruFocus rates PTGX with a GF Score™ of 51/100 and a GF Value™ of $58.69 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 1,427 Biotechnology companies, Protagonist Therapeutics ranks better than 96.22% on this metric.

Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Protagonist Therapeutics's share price for the quarter that ended in Mar. 2026 was $105.4. Protagonist Therapeutics's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 64.23 Mil. Therefore, Protagonist Therapeutics's market cap for the quarter that ended in Mar. 2026 was $6,769.53 Mil.

Protagonist Therapeutics's quarterly market cap increased from Sep. 2025 ($4,148.35 Mil) to Dec. 2025 ($5,465.56 Mil) and increased from Dec. 2025 ($5,465.56 Mil) to Mar. 2026 ($6,769.53 Mil).

Protagonist Therapeutics's annual market cap increased from Dec. 2023 ($1,323.27 Mil) to Dec. 2024 ($2,355.95 Mil) and increased from Dec. 2024 ($2,355.95 Mil) to Dec. 2025 ($5,465.56 Mil).

Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Protagonist Therapeutics's Enterprise Value for Today is $7,345.28 Mil.


Protagonist Therapeutics  (NAS:PTGX) Market Cap Explanation

Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the company’s debt. The real price you pay is the Enterprise Value.

Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.


Protagonist Therapeutics Market Cap Related Terms


Protagonist Therapeutics Market Cap Historical Data

* Premium members only.

The historical data trend for Protagonist Therapeutics's Market Cap 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 Market Cap Chart

Protagonist Therapeutics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Market Cap
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1,636.06 538.29 1,323.27 2,355.95 5,465.56

Protagonist Therapeutics Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Market Cap Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 2,994.89 3,432.71 4,148.35 5,465.56 6,769.53

PTGX vs IMVT, SYRE, MIRM: Market Cap Comparison

For the Biotechnology subindustry, Protagonist Therapeutics's Market Cap, along with its competitors' market caps and Market Cap 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 Market Cap vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Protagonist Therapeutics's Market Cap distribution charts can be found below:

* The bar in red indicates where Protagonist Therapeutics's Market Cap falls into.


PTGX
51GF Score
Protagonist Therapeutics Inc PTGX
Market Cap is just one metric. See GF Score™, valuation, warning signs, and more.
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Protagonist Therapeutics Market Cap Calculation

Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.

Protagonist Therapeutics's Market Cap for the fiscal year that ended in Dec. 2025 is calculated as

Market Cap (A: Dec. 2025 )=Share Price (A: Dec. 2025 )*Shares Outstanding (EOP) (A: Dec. 2025 )
=$87.34*62.578
=$5,465.56

Protagonist Therapeutics's Market Cap for the quarter that ended in Mar. 2026 is calculated as

Market Cap (Q: Mar. 2026 )=Share Price (Q: Mar. 2026 )*Shares Outstanding (EOP) (Q: Mar. 2026 )
=$105.4*64.227
=$6,769.53

* 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.

Frequently Asked Questions Learn more about Market Cap →
What does a Market Cap of $7,883.29 Mil mean?
Protagonist Therapeutics (PTGX) has a Market Cap of $7,883.29 Mil as of Jul. 01, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Protagonist Therapeutics and its competitors. According to the industry distribution chart, Protagonist Therapeutics ranks #54 out of 1427 companies in the Biotechnology industry, placing it in the top 3.8%.
Is Protagonist Therapeutics' Market Cap too high?
Protagonist Therapeutics' current Market Cap is $7,883.29 Mil. The Biotechnology industry median Market Cap is 119.57. Protagonist Therapeutics' value of $7,883.29 Mil is 6493% above this industry median. Based on the distribution chart, Protagonist Therapeutics ranks #54 out of 1427 companies in the Biotechnology industry, which is in the top quartile — a strong position relative to peers. Overall, Protagonist Therapeutics has a GF Score™ of 51/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Protagonist Therapeutics' Market Cap compare to IMVT and SYRE?
According to the Biotechnology industry distribution chart, Protagonist Therapeutics ranks #54 out of 1427 companies for Market Cap. This places Protagonist Therapeutics in the top 4% of its industry — outperforming the majority of peers. The industry median Market Cap is 119.57. Protagonist Therapeutics' value of $7,883.29 Mil is 6493% 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 Market Cap for a Biotechnology company?
The median Market Cap among Biotechnology companies is 119.57, based on 1,427 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Protagonist Therapeutics's current Market Cap of $7,883.29 Mil is 6493% 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 Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Protagonist Therapeutics and its competitors. For the Biotechnology industry, the median Market Cap is 119.57 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Protagonist Therapeutics's current Market Cap is $7,883.29 Mil. 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 $58.69, compared to a current price of $122.58 — trading 108.9% above its estimated fair value. The current Market Cap is $7,883.29 Mil and 6493% above the Biotechnology industry median of 119.57. Protagonist Therapeutics' overall GF Score™ is 51/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Protagonist Therapeutics (PTGX), the current Market Cap is $7,883.29 Mil as of Jul. 01, 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 $122.58 is trading 108.9% above its estimated GF Value™ of $58.69. GuruFocus considers Protagonist Therapeutics to be Significantly Overvalued.

Key valuation signals for PTGX:

  • Market Cap: $7,883.29 Mil
  • GF Value™: $58.69 vs. price of $122.58 (108.9% above fair value)
  • GF Score™: 51/100 with 7 warning signs
  • Industry Position: 6493% above the Biotechnology median (#54 of 1427)

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.
51GF Score

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

$122.58
Price
$58.69
GF Value