Data and methodology

What each number is, where it comes from and how late it can be.

Prices

• Index levels and world markets: Yahoo Finance's public chart endpoint, unofficial and typically delayed by 15 minutes or more.
• Stock prices for movers, volume and breadth: NSE's end-of-day file, final for the session and published after the close.
• Stock history: Yahoo Finance daily prices, adjusted for splits and bonuses but not for dividends. Returns are price returns.

Stock universe

The NIFTY 500 constituent list published by NSE. Large, mid and small cap mean membership of NIFTY 100, NIFTY Midcap 150 and NIFTY Smallcap 250, which are NSE's own definitions.

Fundamentals

There is no free, licensed fundamentals feed for Indian stocks. Ratios such as P/E, ROE and revenue growth appear only when the administrator imports a file, and then every value shows its source and date. Without that file, those pages say so.

News

Items come from exchange and regulator feeds. Stocks, sectors, category, sentiment and impact are assigned by readable rules (`research/news/tagging.py`), not by a prediction model. Summaries are short excerpts unless an AI summary is enabled, in which case they are marked.

Mutual funds

Scheme names, categories and NAVs come from AMFI. NAV history comes from mfapi.in, a community service built on AMFI data. Returns are on NAV. Sharpe and Sortino use a risk-free rate of 6% a year (an assumption) over three years. Expense ratio comes from AMFI disclosures where the scheme name matches; AUM is not in these feeds, so it is not shown.

Rankings

A ranking sorts by a stated measure of the past. It is not a list of best investments and it does not predict anything.