thetrademarkk/india-index-options-1m

India Index & Options - 1-minute OHLC

1-minute OHLCV(+OI) bars for NSE/BSE index spot and option chains: NIFTY, BANKNIFTY, SENSEX (~2021-2026). Powers the open-source TradeMarkk backtester (https://thetrademarkk.com).

Educational use only. Provided as-is, no warranty. Verify against official exchange data before relying on it.

Structure

• index/{SYMBOL}.parquet - 1-min spot OHLC per index.
• options/{SYMBOL}/{EXPIRY}.parquet - 1-min OHLC per option contract (with strike, option_type, expiry columns). (uploaded in a later step)

Schema

timestamp (tz-aware IST), open, high, low, close, volume, open_interest, trading_day, symbol (+ strike, option_type, expiry for options).

Notes

Option coverage is partial: illiquid/far strikes are often sparse or absent.