Pre-expiry margin on commodities from April 1 SECTIONS Share Synopsis A pre expiry margin will kick in during the last five trading days prior to expiry date, wherein the margin will increase by 5% daily, Sebi said in a circular late evening on Tuesday. Shutterstock.com Related Mumbai: Sebi has decided to impose pre-expiry margins on cash settled commodities that are susceptible to near zero or negative pricing risk. A pre expiry margin will kick in during the last five trading days prior to expiry date, wherein the margin will increase by 5% daily, Sebi said in a circular late evening on Tuesday. This was done after consultations with the clearing corporations of exchanges.