Protagonist Therapeutics Inc. logo

Protagonist Therapeutics Inc. (PTGX)

Market Closed
16 Oct, 08:00 PM
NASDAQ (NMS) NASDAQ (NMS)
$
128. 75
-7.8
-5.7122%
After Hours
$
152. 00
+23.25 +18.0583%
9.24B Market Cap
- P/E Ratio
- Div Yield
850,343 Volume
0.75 Eps
$ 136.55
Previous Close
Analysts:
Add Transaction
Day Range
128.61 136.56
Year Range
73.08 160.81
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Summary

PTGX closed today lower at $128.75, a decrease of -5.7122% from yesterday's close, completing a monthly decrease of -12.8596% or -$19. Over the past 12 months, PTGX stock gained 48.7751%.
PTGX is not paying dividends to its shareholders.
The last earnings report, released on May 06, 2026, exceeded the consensus estimates by 0.5039%. On average, the company has surpassed earnings expectations by 0.2281%, based on the last three reports.
The stock of the company had never split.
The company's stock is traded on 2 different exchanges and in various currencies, with the primary listing on NASDAQ (NMS) (USD).

PTGX Chart

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Protagonist Therapeutics (PTGX) Upgraded to Strong Buy: Here's What You Should Know

Protagonist Therapeutics (PTGX) Upgraded to Strong Buy: Here's What You Should Know

Protagonist Therapeutics (PTGX) has been upgraded to a Zacks Rank #1 (Strong Buy), reflecting growing optimism about the company's earnings prospects. This might drive the stock higher in the near term.

Zacks | 1 day ago
Protagonist Therapeutics, Inc. (PTGX) Presents at Citigroup's Biopharma Back to School Summit 2026 Transcript

Protagonist Therapeutics, Inc. (PTGX) Presents at Citigroup's Biopharma Back to School Summit 2026 Transcript

Protagonist Therapeutics, Inc. (PTGX) Presents at Citigroup's Biopharma Back to School Summit 2026 Transcript

Seekingalpha | 1 month ago
Protagonist Therapeutics, Inc. (PTGX) Discusses FDA Approval of Mimrylo for Erythrocytosis in Polycythemia Vera Transcript

Protagonist Therapeutics, Inc. (PTGX) Discusses FDA Approval of Mimrylo for Erythrocytosis in Polycythemia Vera Transcript

Protagonist Therapeutics, Inc. (PTGX) Discusses FDA Approval of Mimrylo for Erythrocytosis in Polycythemia Vera Transcript

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Protagonist Therapeutics Inc. Investors

Name Quantity Cost Value Profit ($) Gain (%)
Curtis Ellergodt
Curtis Ellergodt Rothschild Investment LLC
106 $6,402.76 $14,445.68 $8,042.92 125.62%
Marc Larkins
Marc Larkins Johnson & Johnson
2.45M $43.4M $315.94M $272.55M 627.99%
JD
Jim Dushek HARBOUR INVESTMENTS Inc.
36 $4,050.34 $4,906.08 $855.74 21.13%
Farallon Capital
Farallon Capital Farallon Capital Management LLC
6.35M $137.43M $871.26M $733.83M 533.98%
BG
Bart Gancher Intech Investment Management LLC
24,056 $1.95M $3.28M $1.34M 68.7%

Protagonist Therapeutics Inc. Analysts

Name Quantity Cost Value Profit ($) Gain (%)
RL
Richard Law Goldman Sachs
1,445.61 $216,841.38 $186,208.92 -$30,632.46 -14.13%

Protagonist Therapeutics Inc. (PTGX) FAQ

What is the stock price today?

The current price is $128.75.

On which exchange is it traded?

Protagonist Therapeutics Inc. is listed on NASDAQ (NMS).

What is its stock symbol?

The ticker symbol is PTGX.

Does it pay dividends? What is the current yield?

It does not pay dividends to its shareholders.

What is its market cap?

As of today, the market cap is 9.24B.

Has Protagonist Therapeutics Inc. ever had a stock split?

No, there has never been a stock split.

Protagonist Therapeutics Inc. Profile

Biotechnology Industry
Healthcare Sector
Dinesh V. Patel CEO
NASDAQ (NMS) Exchange
74366E102 CUSIP
US Country
141 Employees
- Last Dividend
- Last Split
11 Aug 2016 IPO Date

Overview

Protagonist Therapeutics, Inc. is a biopharmaceutical company focused on the development of peptide-based drugs to address unmet medical needs in the areas of hematology and blood disorders, as well as inflammatory and immunomodulatory diseases. Incorporated in 2006, the company has dedicated its research and development efforts to create innovative treatments, leveraging its expertise in peptide technology. Headquartered in Newark, California, Protagonist Therapeutics stands at the forefront of drug development, working in collaboration with industry leaders such as Takeda and JNJ Innovative Medicines to bring new therapies to market.

Products and Services

List of key developmental drugs and collaborations:

  • Rusfertide (PTG-300): An injectable hepcidin mimetic designed for the treatment of polycythemia vera and other blood disorders. Rusfertide has completed phase 2 clinical trials, showing promise as a novel therapeutic option. This development is part of a licensing and commercialization agreement with Takeda, aiming to make a significant impact on patients' lives by addressing the unmet needs in hematology.
  • JNJ-2113: This orally delivered investigational drug is designed to block biological pathways involved in moderate-to-severe plaque psoriasis. Having completed phase 2b clinical trials, JNJ-2113 is developed in collaboration with JNJ Innovative Medicines. The partnership focuses on co-developing this Interleukin-23 receptor antagonist compound, which represents a novel approach to treating inflammatory diseases.
  • PN-943: An orally delivered, gut-restricted alpha 4 beta 7 specific integrin antagonist, PN-943 has completed a phase 2 clinical trial for patients with moderate to severe ulcerative colitis. This drug aims to offer a targeted therapeutic approach, reducing the systemic side effects often associated with current treatments for this chronic and debilitating condition.

Contact Information

Address: 7707 Gateway Boulevard
Phone: 510 474 0170