Hi parmit,
1.For the time-being ,forget about XX50 strikes.
2.When Total Open Interest jumps significantly ,say ,from LAKHS to MILLIONS, it gives
one boundary.(These points are marked).
3.The cross-section of CALL window and PUT window gives Expected Zone.
Study this ZONE ,togeather with TREND ,it gives fairly good idea.This zone modifies itself
as time progresses.( But do not consider it as PANACEA).
4.Retionale behind this zone ,is that ,if strong Upward movement is expected, on PUT side
the open interest reduces , eventually falls below Million and moves out this zone.
5.This is OK upto to certain time,(Say,approxmately 2 trading weeks) because by that time
the total open interest is huge on both sides.Afterwards another criterion is applied.That is ,
PREMIUM of the Option.If it is more than Rs.10 ,then it will stay in the zone ,otherwise ,out
of the zone.
6.This methodology is applied to Nifty Options only.The methodlogy applied to Bank Nifty
solely depends on the Premium of Options.