NSE, the National Stock Exchange of India, is the country's largest stock exchange by trading volume and the world's largest derivatives exchange by number of contracts. It began trading in 1994, runs the Nifty 50 index, and handles most of India's equity and F&O turnover. It lists more than 2,200 companies and settles share trades on T+1.
NSE is the exchange where most Indian share and derivatives trading happens. It was set up in 1992 at the government's request to bring screen-based trading to India. Its equity market opened in November 1994. Within a few years it had overtaken the much older BSE in volume. Today its trading system, its indices and its clearing arm sit under most of what a retail trader does in a day.
What NSE runs
The equity cash market is where stocks are bought and sold for delivery or intraday. The equity derivatives segment covers futures and options on indices and on single stocks. This is where NSE leads the world. The Futures Industry Association has ranked it the largest derivatives exchange on the planet by contracts traded for several years running. It kept that spot in 2026. NSE also runs currency derivatives, a commodity segment, a debt market and a platform for small companies. Equities trade from 9:15 am to 3:30 pm, with a pre-open session from 9:00 am. The full list of closed days is in NSE trading holidays 2026.
The Nifty 50
NSE's flagship index is the Nifty 50, launched with a base value of 1,000 on 3 November 1995. It tracks 50 of the largest and most liquid companies on the exchange, weighted by free-float market value. It is rebalanced twice a year. It sits behind the most traded derivatives contract in the world, the Nifty 50 option, and behind most Indian index funds. NSE Indices Ltd, an NSE subsidiary, also runs the Bank Nifty, the Nifty Next 50, sector indices and hundreds more. How the Nifty 50 compares with the Sensex is covered in Nifty 50 vs Sensex.
How a trade reaches NSE
A retail investor cannot connect to the exchange directly. An order placed on a broker's app goes first to the broker's risk system. Then it reaches NSE's matching engine, where it meets the best opposite order in the book. The whole trip takes milliseconds. Once matched, NSE Clearing guarantees the trade and settles it on T+1. Cash and shares change hands the next working day. That guarantee is why a buyer never has to worry about whether the seller will deliver.
NSE as a company
NSE is owned by banks, insurers and investment funds. It is a highly profitable business in its own right, earning from transaction charges, listing fees, data and index licensing. After years of regulatory delays, it moved towards its own listing in 2026 with an offer for sale priced at Rs 1,700 to Rs 1,785 a share. The details are in NSE IPO 2026. Because an exchange cannot list on itself, NSE shares trade on the BSE.
NSE against BSE
BSE is older and lists more companies. NSE has the volume. For most large stocks the difference is a few paise in the quote, and a broker will route the order to the better price. The split matters most in derivatives. NSE's Nifty 50 and Bank Nifty contracts have the deepest liquidity. Each exchange has its own weekly expiry day under SEBI's 2024 rules.
FAQs
What does NSE stand for?
National Stock Exchange of India Limited. It is based in Mumbai.
Is NSE bigger than BSE?
By trading volume, yes, by a wide margin. By number of listed companies, BSE is larger.
Who regulates NSE?
SEBI. The exchange is itself a frontline regulator for its members, but SEBI sets the rules and can override it.
Can shares bought on NSE be sold on BSE?
Yes, for delivery trades. Shares in a demat account are the same whichever exchange they came from.