buy the rumor, sell the news. pfizer is a solid long term play to have in a portfolio, but you've likely missed the swing.
also, and i'm not saying this to sound snarky, i'm literally trying to keep you from holding the bag. you sound like you're not familiar with biotech and how to play the game there. there are way too many spec stocks you gotta jump in and out of on time. people have been doing vaccine swing/plays all year, a lot of them getting burnt in the process. i don't fukk with biotech for that reason, too much hinges on trials, funding, developments, IP/blockbusters, etc. you gotta stay on top of the news for them. your posts/questions don't make it seem like you're that type, now if you're willing to go all in on daily monitoring and research, then go forward. otherwise, pick blue chip stocks in that space as part of long term portfolio diversification