The flash crash that happened on October 5 had halted trading for about 15 minutes, and wiped out nearly . 10 lakh crore of investor wealth.
"It is hereby notified that as per revised operating policy, the dynamic price bands shall be 10% for stocks on which derivatives products are available and on stocks included in indices on which derivatives products are available," NSE said in a circular.
NSE advised trading members not to place orders beyond the dynamic price bands in force. NSE said that in the event of a market trend in either direction, the dynamic price bands may be relaxed during the day in co-ordination with other exchanges.