Along with abiding to the initial margin requirement mandated by the exchange, brokers are also subject to position limits. Open Interest (OI) is a figure that informs you how many futures or options contracts are outstanding (open) in the market currently. For customers, there is an OI limitation of 5% of the total number of all derivative contracts for the same underlying and a 15% OI restraint for brokers. You can visit the NSE website to look up for more information.
When both cash and collateral margins are available, which one is utilized first? What is the order of utilization?
What is the margin blocking percentage during the end-of-expiry week for physical settlement of stock option contracts?
Can I do intraday trading in stock options?
When does expiry take place for Nifty, Bank Nifty, Sensex, Bankex, and stock option contracts?