A stacked inductor is provided with a conductive frame including a top surface, two side surfaces depending downward from the top surface, two spaced bottom surfaces each inward bending from a bottom of either side surface, an upper space defined by the top surface, the side surfaces, and the bottom surfaces, two vertical legs each depending downward from either bottom surface, two supports each inward bending from a bottom of either leg, and a lower space defined by the bottom surfaces, the legs, and the supports; an upper core including a bottom groove; an intermediate core; and a lower core including a top groove. The bottom groove is on the top surface, the intermediate core is in the upper space, the lower core is in the lower space and supported by the supports. The upper, intermediate, and lower cores are magnetically connected together.