Landstar System (NASDAQ:

) shares reached a new 52-week high of $68.65 after the company reported upbeat Q2 results. Northrop Grumman (NYSE:

) shares gained 0.16% to touch a new 52-week high of $126.73 after the company reported a 4.7% rise in its second-quarter profit and raised its earnings forecast for the year. Pepsico (NYSE:

) shares touched a new 52-week high of $92.67 after the company reported better-than-expected second-quarter results and raised its full-year earnings outlook. Puma Biotechnology (NYSE:

) shares touched a new 52-week high of $227 after the company released positive top line results from its Phase 3 PB272 trial in initial treatment for breast cancer.