also: しほんしゅ
noun
investor; stockholder; capital owner
Refers to a person or entity that provides capital to a business, typically holding ownership shares. Used in financial and business contexts.
その会社の資本主は、海外の投資ファンドだ。
The company's capital owner is an overseas investment fund.
資本主として、彼は経営に口を出す権利がある。
As an investor, he has the right to have a say in management.
Compound of 資本 (shihon, 'capital') and 主 (nushi/shu, 'owner' or 'master'). The reading しほんぬし uses the kun'yomi for 主, while しほんしゅ uses the on'yomi.