m.Stock is the first broker that allows pre-pledging of stocks. However, in case of partial execution of margin trades or partial selling under MTF or CNC (Cash and Carry), you need to complete the pledge process post-trade. You are required to pledge till 10:00 a.m. on the Settlement Day, i.e., T+1 / T+2 days, depending on the settlement cycle of a pledge request. The whole process needs to be done via a CDSL link sent to you over an SMS/email.