Otsuka Holdings

Otsuka Holdings

Otsuka Holdings functions as the listed parent of the Otsuka group. Busaburo Otsuka established the original business in 1921. Ichiro Otsuka holds the chairman role. Core holdings include 100 percent ownership of Otsuka Pharmaceutical Co., Ltd., Taiho Pharmaceutical Co., Ltd., Otsuka Pharmaceutical Factory, Inc., Otsuka Warehouse Co., Ltd., and Otsuka Chemical Co., Ltd., all based in Japan. The firm also maintains ONCE Ventures for early-stage commitments in the United States and limited-partner positions in GrayMatters Health and New Culture. Geographic exposure centers on Japan with additional venture activity in the United States and Israel. Public equity positions include the parent itself at an estimated $25 billion market capitalization and a stake in Earth Corporation. Two foundations operate alongside the corporate structure: the Otsuka Foundation for Oncology Research and the Otsuka Toshimi Scholarship Foundation, established in 2007. No operational events from the last 24 months appear in available records. The architecture ties investment activity directly to the operating-company ownership chain rather than a standalone fund vehicle.