http://finviz.com/futures_charts.ashx?t=SI&p=m5 Below you see the trends of the contracts. Blue, red, green. This is derived from COT report data: http://www.cftc.gov/dea/futures/other_sf.htm And I'm trying to find out exactly how. This is the last report, where the last finviz data should come from: 10/04/2012 Producer/Merchant/Processor/User Long 14982 Short 54240 Swap Dealer Long 22528 Short 9656 Large Traders Long 20771 Short 7129 Small Traders Long 7383 Short 2839 Amount contracts, visually estimated on above finviz url: - large traders (red): 19000 - small traders (blue): 10000 - commercial hedgers (green): 25000 How exactly did finviz come to these numbers?