Trading Mechanism — F&O Segment, Orders, Eligibility
India's F&O segment runs on NSE's NEAT-F&O and BSE's BOLT platforms with continuous anonymous auction. Orders are routed through registered trading members. Sto...
Exchange Trading Mechanism
India's F&O segment runs on NSE's NEAT-F&O and BSE's BOLT platforms with continuous anonymous auction. Orders are routed through registered trading members. Stock and index eligibility for derivatives is rules-based — liquid, large-cap, non-manipulable instruments only.
Only stocks meeting SEBI eligibility can host derivatives: average daily market cap and turnover above thresholds, non-negative market-wide position limit utilisation, non-concentrated holdings, F&O not banned. Indices need 80% of constituents individually eligible and top index weight ≤ 15% at rebalancing. Orders can be limit, market, stop-loss, or advanced (IOC, GTD). Trading hours 09:15–15:30 IST. Each trade generates a contract note; end-of-day margin calculation is done by the clearing corp and communicated via the broker.
You never know who's on the other side — only the clearing corp
Only liquid, large-cap, non-banned stocks can have F&O
Single continuous session, no split markets
Daily record of every trade — tax and audit evidence
A Practical Example
A mid-cap stock, X Ltd, has average daily turnover ₹12 Cr, median market cap ₹4,500 Cr, no concentration issues and is not in a ban period. It qualifies for F&O. NSE admits it, sets lot size to keep notional around ₹5 Lakhs, and publishes specifications. From T+1 day, futures + ATM options on X Ltd start trading on NEAT-F&O.
What Makes This Important
Frequently Asked Questions
When market-wide open interest exceeds 95% of the position limit, the stock enters ban period — no new positions can be created, only existing ones can be closed. This prevents over-concentration and market manipulation.
🧠 Quick Quiz
1 questions to check your understanding