This is huge. Facebook is 2% of the S&P 500, it basically dragged the whole market slightly down.
Yes, unfortunately I bought in 2 days ago. The market is irrational. Facebook literally missed its projections by 3% and loses 0.15% of its active users (mostly due to things opening up) and investors panic. Good time to buy in.
Expectations were that it would do like the other internet giants and beat by miles. Yes it's weird that the expectations are not just their own performance, but that's often how the market works.