Data Sources & Methodology

Who operates Index Screener?

Index Screener is operated by AMUTHINI TECHNOLOGIES LLP. It provides tools for researching Indian indices and the available ETFs that track them. Questions or data corrections can be sent through our contact page.

Sources and update frequency

Our NSE index pages use imported historical index levels and available valuation statistics. Data is updated in end-of-day batches. The date displayed beside a value is the date of that observation, rather than the time you opened the page. Weekends, market holidays, and delayed imports can leave the latest available observation on an earlier date.

Check the original Nifty Indices historical data for index levels and PE, PB, and dividend-yield series. Consult the index provider's documentation for index definitions and changes in methodology.

PE ratio, PB ratio, and dividend yield

Equity index pages show the valuation statistics available in the imported data. Historical comparisons use the available observations for that index. A historical average is a comparison point; it does not establish a fair price or predict future returns. Not every index has all three valuation measures.

Each index has supporting guides for the metrics for which source data is available. Use the indices directory to open an index, then follow its PE ratio, PB ratio, dividend yield, or returns guide.

Historical returns

Multi-year returns are presented as compound annual growth rates (CAGR) when enough history is available. The calculation is: ((ending value / starting value) raised to (1 / years) − 1) × 100. It describes annualized growth between two observations; it is not a steady return received every year.

Calculations use the index series named on the page. A price index and a total-return index are different series. Missing history is not a zero return, and shorter return windows can vary substantially.

Volatility, drawdown, and sector composition

Annualized volatility is calculated from daily percentage changes in available index levels, using their standard deviation multiplied by the square root of 252 and expressed as a percentage. It describes variability in the historical observations.

Drawdown compares an index level with a recorded historical peak. Sector composition may be based on constituent counts where index weights are unavailable; the page labels that distinction. A share of company counts should not be read as a portfolio weight.

Market Risk Indicator and valuation zones

The Market Risk Indicator (MRI) compares available valuations with historical market cycles. Valuation zones compare current metrics with their historical distribution. These are descriptive measures based on recorded history, not probabilities of a market crash or guarantees of future performance.

Coverage, missing values, and corrections

A dash or an unavailable metric means the data or required history is missing. Available history and features vary by index and subscription plan. ETF listings and company composition should be checked against current provider documents before use.

If a value looks inconsistent, send the page URL, observation date, and a link to the original source through our contact form. This helps us check the import and calculations.

Educational use

Index Screener is not a SEBI-registered Investment Adviser, Research Analyst, or broker. The tools are for research and education. Read our disclaimer and terms for further details.