In the last week of expiry will there be any increase in margin requirement if I sold call or put of a stock?

Hey @No name13, 

Yes! There will be a substantial increase in the margin requirement during the last week of expiry on selling options of a stock as the physical settlement will be due.

• 10% of Delivery margins computed on Expiry – 4 EOD (Friday)
• 25% of Delivery margins computed on Expiry – 3 EOD (Monday)
• 45% of Delivery margins computed on Expiry – 2 EOD (Tuesday)
• 100% of Delivery margins computed on Expiry – 1 EOD (Wednesday) (As per our policies).

Hope this clarifies!

Yes. But not significantly.

Here is an example for you, the margin requirement increases for the same strike option as it gets closer to expiry.