1. A good derivatives summary which is updated everyday EOD around 7-7:30pm —
I get the PCR number from there. Today PCR has hit 1.79 and it has worked every single time that when PCR hits 1.8+ Nifty reverses in a day or two – the only time when PCR hit 2.08 accodring to Rahul Arora (UTVi Stocks editor) is in Jan 2008.
2. I have been updating daily options data from Feb 2010 (well I may have skipped a few days though ..) – this is the link for the google doc
3. The mother of all — NSE website — shows top traded (20) stock futures —
You can select use pulldown menu on the right side to see top traded Nifty options / Stock options …