OSAKA -- Hong Kong-based activist investor Oasis Management has built a 5.2% stake in troubled Japanese drugmaker Kobayashi Pharmaceutical, according to securities filings submitted Wednesday.
Hong Kong fund becomes 4th-largest shareholder in Japanese drugmaker

Kobayashi Pharmaceutical is grappling with a scandal surrounding a red yeast supplement suspected of being linked to more than 80 deaths. (Photo by Koji Uema)
OSAKA -- Hong Kong-based activist investor Oasis Management has built a 5.2% stake in troubled Japanese drugmaker Kobayashi Pharmaceutical, according to securities filings submitted Wednesday.