ASTMAX Co., Ltd. (7162.T) operates as a holding company engaged in asset management, renewable energy, and electricity trading businesses primarily in Japan. The company provides asset management services for individual and institutional investors through subsidiaries; conducts investment operations for domestic institutional investors; develops and operates solar and geothermal power generation facilities via Astmax Ebino Geothermal, Inc. and Astmax Energy, Inc.; trades electricity including procurement and supply; and offers management systems to retail electric and gas utilities. It maintains membership in organizations such as the Tokyo Commodity Exchange, Japan Electric Power Exchange, and Organization for Cross-regional Coordination of Transmission Operators. Headquartered at 2-10-2 Higashigotanda, Shinagawa-ku, Tokyo, Japan, ASTMAX was established on October 1, 2012, with paid-in capital of 2,013 million yen and employs 59 people. In recent developments, Hulic Property Solution Co., Ltd., a unit of Hulic Co. Ltd., acquired an 18% stake in ASTMAX for ¥156.1 million, with the transaction closing on June 12, 2025; the company completed an equity buyback of 597,600 shares (4.62% of outstanding shares) for ¥150 million announced in January 2024; and its affiliate ASTMAX Fund Management participated as general partner of TUS Capital I L.P. in Gojo & Company's USD 68 million Series D financing round closed in May 2025. PayPay Asset Management Corporation serves as an equity method affiliated company.