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Daily Stock Gainers Daily Stock Losers Most Active Stocks
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Protagonist Therapeutics Stock Quote

Protagonist Therapeutics (NASDAQ: PTGX)

$44.61
Arrow-Thin-Down
(0.3%)
$0.12
Price as of May 19, 2025, 11:08 a.m. ET

Protagonist Therapeutics Return vs. S&P

1 Year 5 Year 5 Year Annualized Since IPO
PTGX +39.29% +174.63% +22.36% +280%
S&P +12.48% +108.07% +15.76% +173%

Protagonist Therapeutics Company Info

Protagonist Therapeutics, Inc. a clinical-stage biopharmaceutical company, which engages in discovering and developing peptide-based therapeutic drugs to address unmet medical needs. Its product pipeline includes PTG-300, PTG-200, and PN-943. The company was founded by Mark L. Smythe on August 22, 2006 and is headquartered in Newark, CA.

News & Analysis

Featured Article

What Companies Does Johnson & Johnson Own?

Matt DiLallo  |  Aug 9, 2024
Featured Article

Looking for Stocks to Buy? Here Are the Companies Johnson & Johnson Is Betting the Most On

Unsurprisingly, Johnson & Johnson's top investments are all in the healthcare sector.

Keith Speights  |  Nov 16, 2023

Why Shares of Protagonist Therapeutics Rose This Week

Jim Halley  |  Apr 20, 2023

The company's lead pipeline candidate is making news.

Why Protagonist Therapeutics Stock Skyrocketed 80.2% Last Month

Keith Noonan  |  Nov 8, 2021

Following huge swings over the last two months, the biotech stock is now up 67% year to date.

Why Protagonist Therapeutics Stock Plunged Today

Keith Speights  |  Sep 20, 2021

The FDA has placed a clinical hold on testing of rusfertide.

Why Protagonist Therapeutics Stock Is Tanking Today

Cory Renauer  |  Sep 17, 2021

The FDA put a clinical hold on one of the biotech's new drug candidates.

3 Small-Cap Biotech Stocks That Surged Last Week

Cory Renauer  |  May 11, 2020

Here's what's behind their impressive market performances.

Why Protagonist Therapeutics Is Skyrocketing Today

Prosper Junior Bakiny  |  May 8, 2020

The company is set to start a pivotal study for one of its lead pipeline candidates.

Valuation

Earnings Transcripts

Protagonist Therapeutics, Inc. Common Stock (PTGX) Q1 2020 Earnings Call Transcript

PTGX earnings call for the period ending March 31, 2020.

Motley Fool Transcribing  |  May 10, 2020

Protagonist Therapeutics, Inc. Common Stock (PTGX) Q1 2019 Earnings Call Transcript

PTGX earnings call for the period ending March 31, 2019.

Motley Fool Transcribing  |  May 15, 2019

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