Here is an interesting view of commodities and the DISAGGREGATED COT data. Following are all the long term charts
that I post on this site, and scrolling down the list can often provide valuable long term outlooks. 

George Slezak

CHARTS OF DISAGGREGATED COT DATA- WITH OPTION DELTAS
Note: Disaggregated Report only covers physical markets. See Info

Red line - net commercial (producer, merchant, processor, user)
Green Line - net other large spec
Yellow Line - net small spec
Blue Line - net swap dealer
Magenta Line - net money managers