Is it quiet again? US stocks, why aren't they as hot as Google?

Damn, every day it's Nvidia, MRVL, Micron, SanDisk, Nokia going back and forth, still making noise. They say MRVL is the next trillion-dollar company, Micron's DRAM is skyrocketing, and there's talk of a trillion-dollar market cap sprint. Day in and day out, it's either NVDA or MRVL pumping, or Micron and SanDisk. Why is it that as soon as I jump in, it stops pumping? Did I crash it with my buy-in? ...