MU is long from $21.77. It is trading at $33.25 as of this writing. From a technical perspective the stock is breaking out. Please see the chart.
The new target zone is $39. to $47. The reason for a wide target is that DRAM prices are often very volatile and move this stock over a wide range.
The new buy zone is $28 to $31.27.
What To Do Now
Those in the stock may consider continuing to hold.
Those not in the stock and are good at managing breakouts, may consider scaling in right here.