By Bret Kenwell Chipmaker Micron’s stock is rallying ahead of the quarterly report. Here are the must-know trading levels. Given the state of tech stocks and the market overall, it’s no surprise that it’s been a mixed run for Micron (MU) – Get Micron Technology, Inc. Report. The chipmaker’s shares rallied 2.25% on Monday and have gained as much as 3% on this morning’s gap-up action. That action comes ahead of tonight’s quarterly earnings report after the close. Micron is a closely watched stock when it comes to earnings. That’s due to a number of factors. First, it doesn’t report earnings when…