The Nifty Smallcap 100 is a stock market index designed to represent the performance of small-cap companies listed on the National Stock Exchange (NSE). It includes 100 stocks selected using predefined rules related to market capitalisation and liquidity, with weights based on free-float market capitalisation.
The index is reviewed and rebalanced periodically to reflect changes in the market and company size. Since it focuses specifically on small cap companies, the index represents a distinct segment of India’s equity market that may have different growth and risk characteristics compared to large cap and mid cap indices.
What is the Nifty Smallcap 100 index?
The Nifty Smallcap 100 Index is designed to reflect the behaviour and performance of the small cap segment of the financial market. It comprises 100 tradable stocks listed on the NSE and is calculated using the free-float market capitalisation method. In simple terms, the index gives more weight to companies with a higher investible market value rather than equal weight to every stock. It also has a Total Returns Index variant, which makes it useful for benchmarking index funds, ETFs, and small cap mutual fund strategies. The index launch date is March 30, 2011, while its base date is January 1, 2004, with a base value of 1,000.
How stocks are selected for Nifty Smallcap 100
The selection process is rules-driven, not discretionary. The index includes all constituents of the Nifty Smallcap 50. The remaining 100 stocks are chosen from the top 150 constituents (based on full market capitalisation) of the Nifty Smallcap 250. To be eligible for the Nifty Smallcap 100, stocks should be ranked among the top 70 in terms of average daily turnover among the top 150 constituents of Nifty Smallcap 250.
A stock can be excluded if its full market capitalisation rank falls below 180 in the Nifty Smallcap 250, if its rank based on turnover drops below 130, or if it is removed from the Nifty Smallcap 250 itself. This structure tries to balance size and liquidity.
Current sector composition of the Nifty Smallcap 100
The Nifty Smallcap 100 is diversified across sectors, though not every sector has the same weight in the index. Financial services accounts for the highest share, followed by healthcare. Here’s a look at the detailed composition.
| Sector | Weight (%) |
| Financial Services | 32.00 |
| Healthcare | 12.05 |
| Capital Goods | 8.86 |
| Chemicals | 7.60 |
| Automobile and Auto Components | 7.40 |
| Services | 5.67 |
| Consumer Durables | 4.72 |
| Information Technology | 4.57 |
| Oil, Gas & Consumable Fuels | 2.99 |
| Realty | 2.74 |
| Consumer Services | 2.71 |
| Metals & Mining | 2.69 |
| Construction | 2.49 |
| Power | 1.86 |
| Construction Materials | 1.38 |
| Telecommunication | 0.27 |
Source: NSE, Nifty Smallcap 100 Factsheet | Data as on April 30, 2026.
The sector composition of the Nifty Smallcap 100 can change over time because index constituents and their weights are reviewed and rebalanced periodically based on market movements and index methodology. Please refer to the exchange website for up-to-date information.
Please note that the reference to any industry/sector/stock is provided for illustrative purposes only. This should not be construed as a research report or a recommendation to buy or sell any security or sector.
How the Nifty Smallcap 100 is rebalanced
The Nifty Smallcap 100 is rebalanced on a semi-annual basis. The cut-off dates are January 31 and July 31 each year, and the review uses six months of average data ending on those dates. NSE Indices also gives the market four weeks’ prior notice before the changes take effect. That matters because index changes can influence trading activity, fund repositioning, and passive money flows.
The rebalancing process is designed to keep the index aligned with its underlying methodology. Companies that increase their market capitalisation and trading turnover may move into the index, while those that lose size, liquidity, or eligibility may move out. This helps the index continue representing the intended small cap universe over time. It also means exposure through a fund tracking this index is not static, as the constituent basket evolves with market movements and periodic reviews.
How to invest in Nifty Smallcap 100 through mutual funds
The index itself cannot be bought directly. Exposure to the Nifty Smallcap 100 may be gained through index funds or ETFs that track the index, though investors should check whether such products are currently available. These passive investment products aim to replicate the index portfolio and its performance, subject to tracking error.
Risks of investing in Nifty Smallcap 100
Small cap investing comes with considerable risk and may be suitable only for those with a very high risk tolerance and a long investment horizon. Here are some key risks.
- Higher volatility: Small cap stocks may experience sharper price movements during market corrections and periods of uncertainty compared to large cap stocks.
- Liquidity risk: Some small cap stocks may have lower trading volumes, which can affect ease of buying or selling during stressed market conditions.
- Business concentration risk: Many small cap companies may operate in niche businesses or early growth stages, making them more sensitive to company-specific developments.
- Economic cycle sensitivity: Small cap companies may be more affected by slowdowns in economic activity, tighter financing conditions or weaker demand environments.
- Earnings variability: Financial performance of small cap companies may fluctuate more due to changing input costs, competition, regulatory changes or execution challenges.
- Sector concentration risk: Although diversified, the index may still have meaningful exposure to certain sectors, which can affect performance if those sectors underperform.
Conclusion
The Nifty Smallcap 100 is designed to represent a liquid and investible segment of India’s small cap market through predefined selection, liquidity and rebalancing rules. While the index may offer exposure to emerging businesses and growth-oriented sectors, it also carries risks related to volatility, liquidity and market cycles. Understanding how the index is constructed, reviewed and weighted can help investors evaluate whether exposure to this segment aligns with their investment horizon, risk appetite and portfolio objectives.
Frequently Asked Questions
How many stocks are in Nifty Smallcap 100?
The Nifty Smallcap 100 contains 100 stocks. The companies inside the basket may change from time to time during semi-annual reviews.
What is the base date and value of Nifty Smallcap 100?
The index has a base date of January 1, 2004, and a base value of 1,000. Its launch date is March 30, 2011, so the index history is back-calculated to the base date for benchmarking purposes.
How often is Nifty Smallcap 100 rebalanced?
The index is rebalanced semi-annually. The review cut-off dates are January 31 and July 31, and NSE Indices considers six months of average data for the review before announcing changes with prior notice.
Can I invest in Nifty Smallcap 100 through SIP?
Yes, you can invest through SIP if you choose a mutual fund or ETF-linked route that offers this option. SIPs are often more practical for small cap exposure because they help spread entry points across volatile market phases.
What is the minimum market cap for Nifty Smallcap 100 stocks?
There is no single fixed rupee minimum stated in the public factsheet. Eligibility is based on ranking within the Nifty Smallcap 250 universe using full market capitalisation and average daily turnover, not on one hard minimum market cap number.
What is the top sector in Nifty Smallcap 100?
Financial Services is currently the top sector in the Nifty Smallcap 100, with a weight of 32% as of April 30, 2026. That makes it the most influential sector in the index right now.
