
Shares of drugmaker Invivyd IVVD.O rise 1.4% to $2.92 premarket
Co says it has started late-stage clinical trial to test its experimental COVID-19 antibody, VYD2311, as a preventive treatment for the disease
Study will enroll 1,770 adults and teens; compare single vs monthly shots to placebo, says co
IVVD says the goal is to offer vaccine alternative for high-risk people seeking protection
Top-line results expected by mid-2026 - IVVD
Up to last close, stock up ~133% YTD