Under the futures and options (F&O) segment, four stocks were banned from trade on Wednesday, July 19, by the National Stock Exchange (NSE). 

The securities banned for F&O trade are Indiabulls Housing Finance, Manappuram Finance, RBL Bank and Delta Corp. The NSE retained these securities from the previous trading day, July 18. 

Derivative contracts of these stocks were banned as they have 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 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.