Zee Entertainment (110.45 percent) and Hindustan Copper (95.69 percent) have been placed on the National Stock Exchange’s futures and options ban for trade on March 28. These stocks are prohibited in the F&O sector because they have exceeded 95 percent of the market-wide position limit (MWPL) The ban is reversed only if the open interest falls below 80 percent. Tata Chemicals has rallied 17.45 percent over the last month.