12.5% in wheat, corn, soybeans, sugar (total about 50%). Also positions in cocoa, livestock, cotton. At first I didn't like the sugar and livestock part, but they did very well last year (sugar has pulled back lately).
I also have GRU, an ETF that is about 40% wheat, with 30% soybeans and meal, 30% corn. That also has options on it, like DBA.
You can also trade JJG, with equal exposure to corn, wheat, beans, sugar. Also has options.
Finally there is DAG, alos with equal exposure to corn, beans, wheat, sugar. But no options.