What happened: Palantir (PLTR) stock surged nearly 30% on Tuesday. What's behind the move: The company reported fiscal second quarter results that beat analyst expectations and raised its full-year guidance. The company sees full-year revenue of $8.16 billion versus prior estimates for $7.65 billion to $7.66 billion. "This quarter was otherworldly: our U.S. commercial revenue grew 149% year-over-year, our overall revenue grew 93% year-over-year," Palantir's CEO Alex Karp said. US government revenue grew 90% year over year and 18% quarter over quarter.