Broad market recovery. One of the most frustrating lessons to learn is that news and price action are not always related.

Sometimes the dog wags the tail, and sometimes the tail wags the dog.

In this case, I don't really see a specific stimulus. Maybe it's Tim Cook having dinner with the president. Maybe inverted yields spooked bond investors and they moved into stocks. Maybe an algorithm says that n% of the time stocks rebound by y% after a selloff of z% and its buying triggered the bounce.

I have learned that the greater the certainty of the commentator, the less likely they are to be right.