NSE is the leading stock exchange in India and the largest derivatives exchange in terms of volume. With more than 50 million unique investors registered on the platform, it serves as the largest capital markets exchange in India. It earns the majority of its revenue—approximately 82%—from trading services, where it earns a take rate on volume turnover across financial instruments, including equity-cash, equity-derivatives, and currency derivatives.

The NSE group consists of 16 subsidiaries and 9 associates, with strategic investments in complementary businesses such as mutual fund registry services, back-end exchange support services for its platforms, depository services, e-corporate governance, and commodity, power and receivables exchange.