NSE

The National Stock Exchange of India (NSE) is India's leading stock exchange, established in 1992 and commencing trading in 1994. Headquartered in Mumbai, it was the first exchange in India to introduce electronic screen-based trading, replacing the chaotic open-outcry system of the Bombay Stock Exchange (BSE).

NSE operates three main market segments: the Capital Market (equity cash segment), the Futures & Options (F&O) segment, and the Debt segment. It is consistently ranked among the top 3–5 exchanges globally by the number of contracts traded in the derivatives segment, driven primarily by Nifty 50 and Bank Nifty options and futures. The exchange also hosts the commodity derivatives segment (previously operated by MCX exclusively) and the currency derivatives segment.

Trading hours on the NSE are 9:15 AM to 3:30 PM for the equity cash segment, with a pre-open session from 9:00 AM to 9:15 AM. The F&O segment trades from 9:15 AM to 3:30 PM (equity derivatives) and up to 5:00 PM (currency derivatives). The exchange operates on a T+1 settlement cycle for equities (implemented fully by January 2023), meaning trades settle the next business day.

NSE's key infrastructure includes the NEAT (National Exchange for Automated Trading) platform for order matching, colocation services for algorithmic traders, and the NSE Clearing Limited (NCL, formerly NSCCL) which acts as the central counterparty for all trades — guaranteeing settlement even if one party defaults.

For investors, the NSE is where they execute the vast majority of equity and derivative trades. Over 90% of India's equity derivatives trading occurs on the NSE. The exchange assigns each listed company a unique symbol (e.g., RELIANCE, TCS, INFY) used across all broker platforms. Understanding NSE's market microstructure — order types, circuit limits, price bands, and trading halts — is essential for active traders.