GRTS -34% on purportedly positive phase-1_data_for_COVID_vaccine: https://www.globenewswire.com/news-release/2022/01/04/2360618/0/en/Gritstone-Announces-Positive-Clinical-Results-from-First-Cohort-of-a-Phase-1-Study-CORAL-BOOST-Evaluating-a-T-Cell-Enhanced-Self-Amplifying-mRNA-samRNA-Vaccine-Against-COVID-19.html