PTGX ▲ +0.1% - Protagonist Therapeutics, Inc. $PTGX - Protagonist Therapeutics to Participate in Two Investment Bank Conferences in September 2026 Protagonist Therapeutics shares rose 0.1% on news that the company will participate in two investment bank conferences scheduled for September 2026, likely reflecting modest investor interest in the company's planned investor engagement activities. 02-SEP-2026 07:05 AM ET