$Pfizer(PFE.US)$ Has this ticker been squeezed before? Seems like big whales want to take advantage of high call volume, inflict fear and buy in cheap

$Facebook(FB.US)$ Everyday there is more than thrillions of people's using facebook but how come still can drop, I don't understand 😅❔

Shares of  $Moderna(MRNA.US)$ Climbed on Monday, following news that the biotech company had studied its phase 3 study of its COVID-19 vaccine candidate and received $472 million funds from the U.S. government. By the close of trading, Moderna's stock price was up more than 9% to $79.91.would it be possible for Moderna to hit 90$ again?
At the same time,