PowerNSE

NSE end-of-day archives. On your disk. Under your control.
One CLI · a small Python API · no third-party dump path

Docs · Quick start · PyPI · Changelog · Disclaimer

Disclaimer — PowerNSE is not affiliated with, endorsed by, or connected to the National Stock Exchange of India (NSE) or any related entity. It is an unofficial tool for educational and research use only — not financial advice, and not an NSE product or data feed. You are responsible for how you use the software and any data it retrieves, including compliance with NSE terms of use. The author accepts no liability for losses, damages, or other consequences arising from use of this package. Use at your own risk. Full text: DISCLAIMER.md · docs.

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NSE publishes end-of-day files. The URLs drift, the session cookie is fussy, and relearning the layout every quarter is a tax. PowerNSE downloads those archives into a local nse-data/ tree, records a SHA-256 manifest, and gives you OHLC from the CLI or from Python — from the exchange, not from a scraped dump.

Two ways in:

1. Build it — point the downloaders at NSE (bhavcopy, F&O, indexes, deals, …).
2. Fetch it — powernse fetch-bundle extracts the tracked nse-data/ from this repo.

Requires Python 3.13+.

Install

pip install powernse

Quick start

powernse bhavcopy --resume
powernse fo-bhavcopy --resume --days 30
powernse index-closes --from 2024-08-01 --to 2024-08-05
powernse index-closes --backfill         # one-time: history before your earliest staged file
powernse index-history                   # one-time: per-index end-of-day levels back to ~1995
powernse equity-list --date 2024-08-09   # EQUITY_L security master
powernse fetch-bundle --force            # optional: GitHub-hosted archive
powernse status
powernse verify                          # session gaps in the core dated archives
powernse ohlc RELIANCE --from 2024-08-01 --to 2024-08-05
powernse doctor

from datetime import date
from powernse import BhavcopyDownloader, NSEData

BhavcopyDownloader("./nse-data").download_range(date(2024, 8, 1), date(2024, 8, 5))
data = NSEData("./nse-data")
bars = data.ohlc("RELIANCE", from_date=date(2024, 8, 1), to_date=date(2024, 8, 5))
adj = data.ohlc_adjusted("RELIANCE", from_date=date(2024, 8, 1), to_date=date(2024, 8, 5))

Walkthrough: quickstart.

What you get

Surface	Covers
Cash / F&O / full bhavcopy	Daily equity & derivatives archives; delivery / traded-value reads
Index closes & constituents	Levels, membership snapshots, a bundled index catalog + Index handle
Bulk / block deals, F&O ban	Typed DataFrames; secban() / is_banned()
Security master (EQUITY_L)	symbol ↔ ISIN ↔ name ↔ listing date ↔ face value
Corporate actions	Classify and adjust — bonus / split / dividend / consolidation, opt-in rights (theoretical ex-rights price)
NSEData / CLI	OHLC + adjusted OHLC, wide frames, streaming iter_days, coverage verify, manifest audit, doctor
fetch-bundle	Zip extract of this repo's nse-data/

Trading days use XBOM sessions when exchange-calendars covers the window (from 2006-08-16). Earlier dates fall back to weekdays.

Archive layout

nse-data/
  raw/bhavcopy/YYYY/YYYY-MM-DD.csv
  raw/fo_bhavcopy/…
  raw/full_bhavcopy/…
  raw/index_closes/…
  raw/bulk_deals/…  raw/block_deals/…  raw/fo_secban/…
  raw/equity_list/YYYY/YYYY-MM-DD.csv
  raw/corporate_actions/YYYY/YYYY-MM-DD.json
  raw/bse_corporate_actions/YYYY/YYYY-MM-DD.json
  raw/index_constituents/YYYY/YYYY-MM-DD_<index>.json
  manifest/downloads.jsonl

Etiquette

Requests are throttled; an NSE session cookie is primed first. Keep date ranges modest; --skip-existing is on by default. Exchange URLs can change without notice.

No Kaggle (or other third-party dump) path. Rough historical OHLCV for experiments belongs elsewhere — PowerNSE sticks to archives published by the exchange.

Documentation

Guide	Link
Install	pip / uv / clone
Quick start	Download + query
Archives	Every downloader
NSEData	Python API
fetch-bundle	GitHub zip extract
Disclaimer	Unofficial · educational use

License

MIT — see LICENSE. Also read DISCLAIMER.md.