Premarket trading runs 4:00 AM – 9:30 AM ET.
PTGX last traded at $100.42 in premarket, down $36.90 (26.90%) from its previous close of $137.32.
📅 PTGX reported earnings on Aug 5, 2026, with an estimated EPS of $2.23. PTGX earnings details →
Protagonist Therapeutics (PTGX) is trading at $100.42 in premarket, down $36.90 (26.90%) from the previous close of $137.32.
Protagonist Therapeutics (PTGX) is down 26.90% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest PTGX premarket headlines and gap history below for the likely catalyst.
Premarket trading for PTGX on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.
PTGX reported earnings on Aug 5, 2026, with an estimated EPS of $2.23.