Mumbai, January 28: The Securities and Exchange Board of India (Sebi) on January 27, 2020, rationalised the margin framework for commodity derivatives in consultation with other stakeholders. Given the backdrop of wide variation of liquidity and volatility among different commodity derivatives, Sebi decided to categorise commodities as per their realised volatility and prescribed floor values for minimum value for Initial Margin (IM) and Margin Period of Risk (MPOR) based on their categories. The clearing corporations (CCs) are requested to categorise their commodities into three different categories based upon the realised volatility for last three years.