With reference to the SEBI circular DRMNP/CIR/P/2018/75 dated May 02,2018 captioned "Margin Collection Requirement" (Equity Derivatives Segment), the client margins which are required to be compulsorily collected and reported to the Exchange/Clearing Corporation, as the case may be, by the Clearing Members/Trading Members shall include initial margin, exposure margin/extreme loss margin, calendar spread margin and mark to mark settlements.