By Bret Kenwell Nvidia stock is being bought on the dip. Here’s how traders should approach it now. After the market on May 25 finished strongly, all eyes shifted to Nvidia (NVDA) – Get NVIDIA Corporation Report as investors looked for one of the market’s top tech firms to give stocks another lift. When the company reported earnings after the close, the stock fell flat, dropping more than 6% in after-hours trading. That’s even after the graphics-chip specialist beat earnings estimates. But that’s not the case on May 26. The shares opened 5.5% lower and then moved into positive territory, up mo…