An upgrade to the NSE Web Site shows option chains. If you click on “Option Chains” on the main page, and enter an underlying, like NIFTY, you can see a straddle chain list, with expiry date links at the top:
(Click for a larger image)
Good stuff. We had introduced it at the end-of-day level in the now-defunct Moneyoga site, but it’s always good to have it on the NSE site.
(Note: the bid/asks and LTPs are stale. At least 10 minutes in my experience)