Over a third of India's benchmark stock index is banks and finance
The NIFTY 50 tracks fifty of the biggest companies on India's National Stock Exchange, yet one sector dominates it. As of August 2026, financial services carried 36.47% of the weight, roughly four times oil and gas. In 2016 its options were the most actively traded index options contract on the planet.
The index launched on 22 April 1996, measured from a base date of 3 November 1995, when the exchange's share market had completed its first year of trading. That starting point was fixed at 1,000, representing a base capital of 2.06 trillion rupees. It is owned by NSE Indices, a wholly owned arm of the exchange, and its constituents span 13 sectors of the economy, which is why fund managers treat it as the yardstick for large Indian companies.
Membership is not simply about size. Weighting originally used a company's full market value, but on 26 June 2009 it switched to free float, counting only shares actually available to trade. A candidate needs a six-month listing history, must be eligible for futures and options trading, and must be cheap to trade in bulk: over the previous six months, 90% of observations should show an average impact cost of 0.50% or less for a 100-million-rupee basket. The list is reviewed twice a year, with cut-off dates of 31 January and 31 July, and traders get four weeks' notice of changes. Companies ranked just below the top fifty sit in the NIFTY Next 50, a waiting room for promotion.
The derivatives around the index are enormous. After briefly losing the title of most traded contract to Nifty Bank, it reclaimed the lead in 2024 when Nifty Bank's weekly expiries were scrapped. Foreign traders once used a version listed in Singapore as SGX Nifty; on 3 July 2023 it was rebranded GIFT Nifty and moved to an exchange in GIFT City, Gandhinagar, which its chief executive hailed as India winning back a contract that had been exported.
Source: NIFTY 50
