Aight so I got into MRNA as well as Biontech way back in 2020 after reading about the current progress of vaccine trials and getting a good feeling about the new mrna technology.

Roughly what happened to both of these is the opposite of what sane people would expect. Any time something like a second wave or an increase in production of vaccines or anything you'd expect to be good for business happened, the stock tanked. It just kept climbing when nothing was happening.

Keeping that in mind its probably best to sell now and then buy again once people get used to the new variant, which I expect to be the short term low point.

I'm not confident enough to actually sell my own holdings though.