DATA PROVENANCE & TRANSPARENCY·Official National Stock Exchange

Data Sources & Publication Feeds

Full disclosures regarding official exchange origins, update cadences, archive depths, and boundary limits for all datasets published on Nifty Valuation Desk.

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1. NSE Indices Official Valuation Reports

Daily (Post-Market Close)

Daily index valuation reports (covering NIFTY 50, NIFTY Bank, NIFTY IT, and other canonical sector indices) are ingested from official NSE Indices daily publication archives.

Historical Depth

2016 – 2026 (10+ Years)

Observation Count

2,640+ Trading Days

Metrics Covered

PE, PB, Dividend Yield

2. National Stock Exchange (NSE) Equity Bhavcopy

Daily Trade Feed

Individual constituent stock prices, volumes, and reported PE multiples are sourced from official daily NSE Equity Bhavcopy files (sec_bhavdata_full.csv).

Stock PE Coverage Boundary:

NSE began providing official daily equity-level Bhavcopy PE metrics in May 2024. Accordingly, stock-level historical PE charts span from May 2024 to the present. Prior multi-year historical series are officially compiled at the index benchmark level.

3. NSE Indices Monthly Weightage Reports

Monthly / Semi-Annual

Official index weights, constituent membership, and free-float market capitalizations are sourced from the monthly index fact sheets published by NSE Indices. Current baseline reflects effective date: 31 Aug 2026.