An undisclosed buyer acquired 6.41% stake in Otsuka Kagu, Ltd. (JASDAQ:8186) from Brandes Investment Partners, L.P. on August 15, 2018. An undisclosed buyer completed the acquisition of 6.41% stake in Otsuka Kagu, Ltd. (JASDAQ:8186) from Brandes Investment Partners, L.P. on August 15, 2018.