Please let me know if I take collateral on my stock holdings and want to use margins for option selling.
Can i use full margins for positional selling options?
Do i need to have 50% cash from my side to hold selling options?
Yes, you would need to have 50% margins in cash and rest can be collateral for positional Options as well as Futures selling. For more info check this link https://support.zerodha.com/category/q-backoffice/portfolio/articles/what-is-pledging