The excel sheet updated by RM regularly has shown the seller in command with the OI and the net delta being negative for the full series.
https://docs.google.com/spreadsheet/ccc?key=0Ase3dtbFwQWUdFFpWFFudkx1VV9XVUQ1cjllVlFyVGc#gid=0
It's an easy way of knowing the swing of the market and taking a position accordingly based on closing prices, open interest and delta change.
In all it's the truest representation of the role played by buyers and sellers in the market today. For the series of march it has been a seller who has dominated as we look at net OI change and net delta change.
For the month of April let's have a look at what has happened so far.
The charts show cumulative delta for the past ten sessions and the high points are annotated in the charts
The current picture shows sellers active in April again.
5741 and 11383 in April have been the points where the seller has entered in huge numbers.
Those will be the minimum levels to take out for a change in bias.