Palantir spiked Tuesday, leading a tech rally, but it's still a roller-coaster market. Google dived on mixed earnings.

Calm returned to Wall Street Tuesday, and tech stocks led U.S. indexes higher following a strong profit report from Palantir ...

The quarter saw Regeneron grow its revenue by 10% year over year to just under $3.79 billion. Although non-GAAP (adjusted) ...