Protagonist Therapeutics (PTGX) closed at $140.24 on November 3, 2026, up 0.6% from the previous close, on volume of 588,449 shares (30-day average 704,046).
Data as of November 3, 2026.
3-Nov-2026
TipRanks (Mon, 2-Nov 8:56 PM ET)
Protagonist Therapeutics to Participate in Four Investment Bank Conferences in November 2026
ACCESS Newswire (Tue, 27-Oct 7:00 AM ET)
Protagonist Therapeutics Announces $300 Million Share Repurchase Program
ACCESS Newswire (Tue, 8-Sep 4:05 PM ET)
Protagonist Therapeutics to Participate in Two Investment Bank Conferences in September 2026
ACCESS Newswire (Wed, 2-Sep 7:05 AM ET)
ACCESS Newswire (Fri, 28-Aug 8:30 PM ET)
Protagonist Therapeutics Reports Granting of Inducement Awards
ACCESS Newswire (Tue, 18-Aug 4:05 PM ET)
Protagonist Reports Second Quarter 2026 Financial Results and Provides Corporate Update
ACCESS Newswire (Wed, 5-Aug 4:05 PM ET)
Market Chameleon (Wed, 18-Mar 4:14 AM ET)
Market Chameleon (Mon, 2-Mar 4:17 AM ET)
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 trades on the NASDAQ stock market under the symbol PTGX.
As of November 3, 2026, PTGX stock price climbed to $140.24 with 588,449 million shares trading.
PTGX has a beta of 0.37, meaning it tends to be less sensitive to market movements. PTGX has a correlation of 0.02 to the broad based SPY ETF.
PTGX has a market cap of $9.07 billion. This is considered a Mid Cap stock.
Last quarter Protagonist Therapeutics reported $213 million in Revenue and $2.29 earnings per share. This beat revenue expectation by $348,424 and exceeded earnings estimates by $.45.
In the last 3 years, PTGX traded as high as $160.81 and as low as $14.78.
The top ETF exchange traded funds that PTGX belongs to (by Net Assets): IJR, VTI, IWM, VB, XBI.
PTGX has outperformed the market in the last year with a price return of +78.4% while the SPY ETF gained +11.7%. PTGX has also outperformed the stock market ETF in the last 3 month and 2 week periods returning +2.6% and +4.3%, respectively, while the SPY returned +1.2% and -1.6%, respectively.
PTGX support price is $135.42 and resistance is $143.32 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that PTGX shares will trade within this expected range on the day.
