The Nifty 50 is the benchmark index of the National Stock Exchange (NSE), made up of 50 large, actively traded companies across major sectors of the Indian economy. It is maintained by NSE Indices and is the most widely used yardstick for the performance of Indian large-cap equities.

How it works and why it matters

The Nifty 50 is a free-float market-capitalisation weighted index, so larger companies move it more than smaller ones. When people say the market was up or down today, they usually mean the Nifty or the Sensex. It matters to you for three reasons: it is the default benchmark to compare your own returns against when measuring alpha, it underlies index funds and ETFs that many long-term investors hold, and it is the reference for a large share of index derivatives traded in India.

  • Composition — 50 large-cap companies, reviewed periodically by NSE Indices.
  • Weighting — free-float market-cap weighted; the biggest firms carry the most influence.
  • Use — benchmark for funds, basis for index ETFs, and reference for derivatives.