KBL European Private Bankers S.A. acquired additional 9.7% stake in Optoelectronics Co.,Ltd. (JASDAQ:6664) on June 8, 2018. KBL European Private Bankers S.A. raised the stake to 11.2% from 1.5% in Optoelectronics Co.,Ltd. KBL European Private Bankers S.A. completed acquisition of additional 9.7% stake in Optoelectronics Co.,Ltd. (JASDAQ:6664) on June 8, 2018.