How Does rights issue issue Impact F&O Lot Sizes?

I see that F&O lot size of GMR ( whose rights issues is open now ) to be 9173. Earlier it used to be 10000 or 11000. If I by April Future with lot size of 9173 will the lot size changes after rights issues gets closed on Apr 8 2015 ?

No hk, the rights issue is already factored into the lot size now. Nothing will change on April 8th. Check out Circulars tool on Zerodha:, to know the latest exchange circulars and how they can impact the lot sizes.