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The Nifty Auto Index is designed to reflect the behaviour and performance of the automobiles segment of the financial market. The index comprises 15 tradable, exchange-listed companies representing auto-related sectors like automobiles 4-wheelers, automobiles 2 and 3-wheelers, auto ancillaries, and tyres.
The Nifty Auto Index is computed using the free-float market capitalisation method, wherein the level of the index reflects the total free-float market value of all the stocks in the index relative to a particular base market capitalisation value. The index follows a periodic capped free-float methodology to ensure balanced representation across constituent companies. An index variant, the Nifty Auto Total Returns Index, is also available for tracking total returns including dividend distributions.
The index is managed by a professional team under a three-tier governance structure comprising the Board of Directors of NSE Indices Limited, the Index Advisory Committee (Equity), and the Index Maintenance Sub-Committee. As of October 31, 2025, the index comprises 16 constituents and is calculated in real-time during market hours.
The Nifty Auto Index can be used for a variety of purposes such as benchmarking fund portfolios, launching of index funds, ETFs, and structured products. The index provides investors and fund managers with a comprehensive benchmark to track the performance of the automobiles sector within the Indian equity market.
The Nifty Auto Index was launched on July 12, 2011. The base date for the index is January 1, 2004, with a base value of 1,000.
The index is rebalanced on a semi-annual basis. The cut-off dates are January 31 and July 31 of each year, meaning that for the semi-annual review of indices, average data for six months ending the cut-off date is considered. Four weeks’ prior notice is given to the market from the date of change.
As of October 31, 2025, the top constituents of the Nifty Auto Index by weightage are:
The following eligibility criteria are applied for selection of constituent stocks:
The index uses the periodic capped free-float methodology. The calculation frequency is real-time, providing continuous updates during market hours.
As of October 31, 2025, the index demonstrated the following performance characteristics:
Returns (Total Return Index):
Fundamentals:
Risk Metrics (based on Price Return Index):
The Nifty Auto Index represents auto-related sectors like automobiles 4-wheelers, automobiles 2 and 3-wheelers, auto ancillaries, and tyres. The index comprises 15 tradable, exchange-listed companies selected from these sectors.
The index is rebalanced on a semi-annual basis with cut-off dates of January 31 and July 31 each year. For the semi-annual review, average data for six months ending the cut-off date is considered, and four weeks' prior notice is given to the market from the date of change.
The weightage of each stock in the index is calculated based on its free-float market capitalisation such that no single stock shall be more than 33%, and the weightage of the top three stocks cumulatively shall not be more than 62% at the time of rebalancing. This capping ensures balanced representation across constituents.
