GSB Finance Limited engages in financing, investment activities, and trading of shares and securities in India. The company, part of the GSB Group, offers equity and derivatives trading; advisory assistance; high net worth individual and institutional broking; technical and fundamental research services; mutual funds distribution; and insurance products including health, motor, home, personal accident, travel, and commercial insurance. It operates primarily in the capital markets and financial services sector, targeting retail, high net worth, and institutional investors across India, with headquarters in Mumbai, Maharashtra, and was founded in 1957 as part of a broking firm that corporatized in 1997. In late 2024 and 2025, the company underwent a major ownership change when acquirers including Vivek Kumar Singhal, Kshitij Agrawal, Nivesh Mandi Private Limited, and Stock Mandi entered a share purchase agreement on November 29, 2024, to acquire 55.25% of the voting share capital from selling promoters, followed by an open offer from September 30 to October 14, 2025, for up to 26% additional shares at INR 21.44 per share, resulting in new management control after SEBI regulatory approvals and a merchant banker switch to GYR Capital Advisors Private Limited.