When OI increase of a particular strike price of an underlying stock/Indices, how do we know if people are buying it or selling it???
OI increase + Price Increase + Delivery Percentage increase = Long Build up
How to find OI increase of the whole week in todays date.?
@ present nseindia show OI n delivery percent of same day only.
From my cheat sheet - 
Will help …
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nseindia.com > search for stock > Get derivative quote > Historical Data > Select Duration > Get Data … Last Column OI 
Thanks. Nice Formula. Just curious, How did you came up with this? is it a standard? or you did research & found this?
It is pretty standard … but I actually do a lot of research to find those very points until this stops working … which is very much individualistic and on per stock basis.
If u watch cnbc in morning @ 8 am they tell us about open interest for call cand put option data.
It defines the range of nifty50 maximum high and maximum low