The positive reaction in ENPH's stock price is likely due to the upgrade from Oppenheimer and the raised price target from BMO Capital, signaling confidence from analysts despite the earnings miss. The strategic shift to focus manufacturing in the U.S. could be viewed positively for long-term operational efficiency. However, the earnings and revenue miss, along with the forecast falling short of estimates, could have been negative factors if not for the analyst upgrades and strategic manufacturing changes.