$NVAX I think most people have already placed their bet, just in waiting mode at the time being. So I would like to ask a hypothetical question to understand more about margin call. Say the first EUA is approved, and the SP jumped and closed at $400 on day 1. * Question is when will short's margin call hits them? If the answer is day 2 and 3, that means don't offload any shares (if you plan to do so) at least till day 3 for the best squeeze.