Was reading S&C article on NEMA and being a bit math minded decided to try it out. Was looking for data to export to excel and found everything except Open Interest. Was staggered to say the least. Thought everybody, even the likes of TOS and IB supplied a sub-graph or overlay of OI.
Have searched high and low but only found one thread last entered in March 2010 re OI.
Have I missed something or is this simple bit of information unchartable in Ninja?
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