For example, after today's WASDE (the USDA's World Agricultural Supply and Demand Estimates) report, November '17 (/ZSX7) soybeans plunged from a high of 988.5 to a low of 938.5, closing at 943.5. Interested parties can read the August '17 WASDE report here: http://usda.mannlib.cornell.edu/usda/current/CropProd/CropProd-08-10-2017.pdf I was stunned by the drop because I didn't figure that the production increase estimate would have the effect it did. So... does anyone have any specific suggestions for resources on commodity price changes and price drivers? Thank you. P.S. - Andrew Hecht has been mentioned once or twice, so if you have an opinion about his writings I would also appreciate it.