Somebody who closely follows the stock market told me that the moment Pfizer announced the vaccine, the stocks of Facebook, Amazon and Co started to go down. For those in these companies who have a stock option as part of the compensation package, even 1% down makes a big difference.
So the stocks went down.
Almost immediately, Biden’s spokesperson promised a 4-6 week national lockdown. Stocks of the companies that profit from lockdowns went back up and stabilized. Makes sense because that’s why they put him in power.