Also, do we need to use it on currency futures chart as opposed to spot chart (assume most MT4 charts are spot charts)? Do we have any MT4 broker showing currency futures charts? Thanks
Not sure if this is helpful but found some very useful information on open interest, volume and price here.
http://www.atradersnotepad.com/module-8-trading-sentiment-news-correlation/trading-the-cot
Some sources of open interest on daily basis as suggested by above site here...