Comment on Online pledging of stocks for trading F&O
There are different product types under which you can buy a futures product: MIS/NRML/CO/BO.
MIS/CO/BO are the intraday product types; meaning these positions get squared off by eod.
NRML is our carry forward product type. If you buy/sell a Future under NRML, you can carry it forward to the next day provided you have sufficient margins in your account. You can calculate the margins for futures position using this tool here: https://zerodha.com/margin-calculator/SPAN/