Kickstart your portfolio with a U.S. stock on us
Sign up and fund a new Wall St account and get a full U.S. share.Sign up and fund a new Wall St account and get a full share randomly chosen between GoPro, Dropbox or Nike.T&Cs apply
Protagonist Therapeutics Inc
About PTGX
Protagonist Therapeutics, Inc. is a biopharmaceutical company with a technology platform that enables de novo discovery of peptide therapeutics. The Company's programs fall into three therapeutic areas: inflammation and immunology (I&I), hematology, and metabolic diseases. Its clinical and pre-clinical programs address biologically and commercially validated targets, including IL-17 oral peptide antagonist PN-881, obesity triple agonist peptide PN-477, obesity dual agonist peptide PN-458, oral small molecule hepcidin functional mimetic PN-8047, and IL-4 and amylin programs. The ICOTYDE (icotrokinra) is used for the treatment of moderate-to-severe plaque psoriasis in adults and pediatric patients 12 years of age or older who weigh at least 40 kg and are candidates for systemic therapy or phototherapy. Rusfertide is an investigational injectable mimetic of the natural hormone hepcidin in development for the treatment of the rare blood disorder polycythemia vera (PV).
Find out what a historical investment in Protagonist Therapeutics Inc would be worth today using our PTGX stock calculator.
Market Capitalisation
$6.33B
Price-earnings ratio
-
Dividend yield
0.00%
Volume
371.68K
High today
$101.90
Low today
$98.37
Open price
$99.03
52-week high
$107.84
52-week low
$44.72
Ready to start your investing journey with Stake?
Open an accountHow do I buy PTGX shares in Australia?
Buying PTGX shares in Australia can be done through an online investing platform, such as Stake. Follow the simple steps below to start investing in Protagonist Therapeutics Inc in minutes.
- Sign up with some I.D. and zero paperwork
- Add funds to your account
- Make your first investment in PTGX
What is the ticker symbol of Protagonist Therapeutics Inc?
The ticker symbol for Protagonist Therapeutics Inc is PTGX.
How much is one share of PTGX?
One share of PTGX is valued at $101.02 as of 20 May 2026.
What is the market capitalisation of Protagonist Therapeutics Inc PTGX?
As of 20 May 2026 Protagonist Therapeutics Inc has a market cap of $6.33B.
What is the 52-week high for Protagonist Therapeutics Inc stock?
The Protagonist Therapeutics Inc 52-week high stock price is $107.84.
What is the 52-week low for Protagonist Therapeutics Inc stock?
The Protagonist Therapeutics Inc 52-week low stock price is $44.72.
Can I buy PTGX shares through Stake, an investing platform like CommSec, Selfwealth or Superhero?
Yes, the Stake investing platform allows you to buy PTGX shares and over 12,000 more stocks and ETFs across the ASX and Wall St.
This is not financial product advice nor a recommendation to invest in the securities listed. Past performance is not a reliable indicator of future performance. As always, do your own research and consider seeking financial, legal and taxation advice before investing. No representation is made as to the timeliness, reliability, accuracy or completeness of the market data provided.
Invest in PTGX on Stake
- Buy PTGX from US$3 brokerage
- Invest in 9,500+ U.S. stocks and ETFs
- Own a slice of PTGX from only US$10 with fractional shares
Stock shown for demonstrative purposes only. US$3 brokerage up to US$30,000.
PTGX related stocks