NSE Historical Data is run by one person, Dhruv Bhartiya. Email is the way to reach me, and I read everything that arrives.
I aim to reply within a few working days. This is a free project maintained in spare time, so a slow week happens, a follow-up nudge is fine if something looks urgent.
What to include
A few details turn “it did not work” into something fixable. If you are reporting a problem with a download, please include:
- the symbol or company name you searched for;
- the date range you asked for;
- the exact error message shown in the console, if any;
- what you expected instead, particularly if the file downloaded fine but a specific figure looks wrong.
Things worth checking first
- A price that looks impossibly wrong is very often a stock split or bonus issue rather than a bug. The data is unadjusted, here is why.
- Two rows on the same date means the stock traded in more than one series that day. That is expected, series codes explained.
- Missing days are usually weekends, exchange holidays, or genuine no-trade days for that stock.
- A column you do not recognise is probably covered in the column reference.
Other reasons to write
- Corrections to the guides. If something in the written material is inaccurate or out of date, I would rather know.
- Feature requests. Useful, though no promises, the scope is deliberately narrow.
- Privacy questions, covered in the privacy policy.
One thing I cannot help with: what to buy or sell. This site does not give investment advice and I am not licensed to, see the disclaimer.