How can I know maximum period of IPO payment? How to know the premium for forthcoming IPO?

 

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• How can I know maximum period of IPO payment?
• The maximum period of IPO payment is tell next day of when IPO was closed till 5:00 pm e.g lf lPO open at 1 and close at 3 then the maximum date would be 4 till 5:00 
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• How to know the premium for forthcoming IPO?
• You can see the grey market permuim on NSE website or on this website.