Protagonist Therapeutics, Inc. Stock Performance

Open $139.69	Prev. Close $140.00	Circuit Range N/A
Day Range $139.69 - $146.16	Year Range $66.11 - $159.99	Volume 40,654
Average Traded $144.03

Protagonist Therapeutics, Inc. Share Price Today

As of 11 October 2026, Protagonist Therapeutics, Inc.'s share price is $143.75. The stock opened at $139.69, compared to its previous close of $140.00. During today's trading session, Protagonist Therapeutics, Inc.'s share price traded between $139.69 and $146.16, with an average price of $142.93. Over the past 52 weeks, the stock has recorded a high of $159.99 and a low of $66.11. In terms of performance, Protagonist Therapeutics, Inc.'s share price has risen by 45.30% over the last six months and is up 82.82% on a year-on-year basis.

Protagonist Therapeutics, Inc. Share Price Chart

$139.69$146.16

Protagonist Therapeutics, Inc. Stock Fundamentals & Key Indicators

Market Cap $9.14B	PE Ratio (TTM) 112.18	Dividend Yield 0.00%
EPS (TTM) $1.28	Revenue (TTM) $46.02B	Return On Equity (TTM) 9.85%
Profit Margin -282.81%	Debt to Equity 0.00	Quarterly Earnings Growth YoY 513.96%

Protagonist Therapeutics, Inc. Quarterly Profit & Loss

All figures in USD

Particulars	Sep 2025	Dec 2025	Mar 2026	Jun 2026
Revenue	$4.71	$7.44	$56.37	$213.48
Net Profit	-$39.34	-$44.38	$3.78	$162.85
Net Profit Margin	-835.24%	-596.51%	6.71%	76.28%
Income Change	N/A	-12.81%	108.52%	4208.20%

Protagonist Therapeutics, Inc. Annual Profit & Loss

All figures in USD

Particulars	2022	2023	2024	2025
Revenue	$26.58	$60.00	$434.43	$46.02
Net Profit	-$127.39	-$78.96	$275.19	-$130.15
Net Profit Margin	-479.27%	-131.60%	63.35%	-282.81%
Income Change	N/A	38.02%	448.52%	-147.29%

About Protagonist Therapeutics, Inc.

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.

Protagonist Therapeutics, Inc. Historical Returns

Month	Open	Close	Change %
Oct 2026	$138.43	$143.70	+1.93%
Sep 2026	$147.60	$140.99	-5.73%
Aug 2026	$135.91	$149.56	+9.32%
Jul 2026	$123.85	$136.81	+11.83%
Jun 2026	$97.85	$122.34	+22.92%
May 2026	$99.13	$99.53	+0.61%
Apr 2026	$106.41	$98.93	-6.26%
Mar 2026	$91.34	$105.54	+14.57%
Feb 2026	$81.56	$92.11	+12.61%
Jan 2026	$86.93	$81.80	-6.29%
Dec 2025	$89.25	$87.30	-2.90%
Nov 2025	$79.14	$89.90	+14.33%

PTGX Share Price FAQs

What is Protagonist Therapeutics, Inc. share price today?

Protagonist Therapeutics, Inc. share price today is $143.75 as on October 10, 2026 at 1:29 am IST.

What is the 52 week high and 52 week low of Protagonist Therapeutics, Inc. stock?

The 52 week high of Protagonist Therapeutics, Inc. stock is $159.99, while the 52 week low is $66.11 as of 10 Oct '26.

What is PTGX's market capitalisation today?

PTGX market capitalisation is $9.14B as of October 11, 2026, at 5:12 am IST.

What is PTGX's net income for the last quarter?

PTGX's net income for the last quarter is 162.85B USD.

What is the 5 year returns of PTGX?

The 5 year returns of PTGX is 361.33% as on 10 Oct '26.

What is the high & low stock price of PTGX today?

PTGX stock price hit a high of $146.16 and low of $139.69 as of 10 Oct '26.

Can I buy PTGX shares in India?

Yes. You can buy PTGX in India by opening an international trading account.