Two stocks have been placed under the Futures and Options (F&O) ban list for trade by the National Stock Exchange on Oct 27, 2022. The two stocks under the F&O ban list on Thursday include the state-owned leading engineering and manufacturing giant Bharat Heavy Electricals (NS:BHEL), and the state-owned lender Punjab National Bank The two securities have exceeded 95% of the market-wide position limit (MWPL), thereby banned for trade under the futures and options segment in the day, and shall continue remaining on the list until their positions fall below 80% While on the Futures and Options ban list, no new/fresh F&O positions can be bought or sold for the stock(s), else that trader gets penalised. Traders with existing positions in that security can unwind their positions. 
Moreover, The Market-Wide Position Limit is Set By The Stock ExchangesThe NSE directs all clients/members to trade in the derivative contracts of the aforementioned securities only to decrease their positions through offsetting positions The leading stock exchange updates the list of securities in the F&O ban for trade every day.
 ban list for trade by the National Stock Exchange on Oct 27, 2022...){kind=link}