Septeni Holdings

One of Japan's leading digital advertising groups with a strong performance advertising focus and strategic partnership with Yahoo Japan / LY Corporation

Septeni Holdings Co., Ltd. is a Tokyo-based digital advertising and media conglomerate that has been a significant player in Japan's internet advertising landscape since its founding in 2000. The company operates through two primary business segments: Internet Advertising, which encompasses performance-based and display advertising services, and Media & Contents, which includes its growing manga and digital content platform business. Septeni is known for its data-driven advertising solutions, helping brands and agencies reach consumers across Japan's digital ecosystem through search, social, and programmatic channels. A defining feature of Septeni Holdings is its close strategic relationship with Yahoo Japan (now LY Corporation), which became a major shareholder. This partnership has strengthened Septeni's position in the Japanese digital advertising market, giving it preferential access to Yahoo Japan's advertising inventory and data assets. The company also operates Ganma!, a popular manga subscription platform, reflecting its diversification into digital content as a complementary revenue stream to its core advertising business. Septeni Holdings is publicly traded on the Tokyo Stock Exchange and serves a broad range of advertisers, from large enterprises to SMBs, offering integrated digital marketing solutions. Its market position is particularly strong in performance advertising and social media advertising within Japan, where it competes with other major digital agencies and ad networks. The company continues to invest in technology and data capabilities to enhance targeting, measurement, and campaign optimization for its clients.

• 2000Founded