F&O Ban List
Stocks whose F&O open interest has crossed 95% of the market-wide position limit, restricted to reducing existing positions only.
A stock in ban doesn't stop trading — it stops accepting new F&O positions from anyone, exchange-wide, until open interest falls back under the threshold. It applies to individual stock F&O, not to the index contracts (NIFTY, BANKNIFTY, FINNIFTY) DeltaK trades, but it's a standard piece of Indian F&O plumbing worth knowing if a strategy here ever gets adapted to single-stock options.
A stock typically enters the ban list after a period of concentrated F&O buildup relative to its available free float, and exits only once existing positions naturally unwind or expire — there's no manual override, only time and reduced open interest bring a stock back onto the tradable list.
Example: a stock crossing 95% of its market-wide position limit gets frozen for new F&O positions the very next session, across every broker and every trader — existing positions can still be reduced or closed, but nobody can add a single fresh lot until open interest cools back under the threshold.
Related terms
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