Under the futures and options (F&O) segment, nine stocks were banned from trade on Friday, August 11, by the National Stock Exchange (NSE). 

The securities banned for the F&O trade are Balrampur Chini Mills, Can Fin Homes, Chambal Fertilizers, Delta Corp, Granules India, Hindustan Copper, Indiabulls Housing Finance, Manappuram Finance and Zee Entertainment Ltd.

Derivative contracts of these stocks were banned as the open market interest for these securities has crossed 95% of the market-wide position limit (MWPL) set by the exchanges. The MWPL is the maximum number of contracts that can be opened at any particular time. 

The open interest for the derivative contracts of Delta Corp stood at 94.9% at the closing time on Thursday, while that of Hindustan Copper was 88.1%. Balrampur Chini and Chambal Fertilisers saw the open interest for their F&O contracts touch 85.8% and 99%, respectively, on August 10. Indiabulls F&O contracts saw their open interest reach 92.1% on Thursday. 

All the above securities were retained on the list from Thursday, August 10. Granules India, Can Fin Homes, Manappuram Finance and Zee Entertainment Ltd were added to the list as the open interest of their F&O contracts touched 102.2%, 98.7%, 101.6%, and 112.9%, respectively, on Thursday.

The ban will be lifted once the position falls below 80%. Traders will get penalised for buying or selling these securities. They will be available for trading in the cash market.

The National Stock Exchange updates the list of securities on the F&O ban list daily. This list serves as a guide for traders and investors in the market. Traders who trade in indices do not encounter a situation of security ban.