Calpine was upgraded to hold from sell by TheStreet Ratings last Monday. TheStreet Ratings gives Calpine a C grade. The stock closed Friday at $18.18 and has risen 11.33% year to date.
A host of power companies will benefit from California's push for more electric vehicles, but it's unclear which automakers will win.
Chinese indices rise and the renminbi is pegged lower against the dollar after a one-week holiday, while Hong Kong and Japan take a break.