The  daily Commodity Research Bureau (CRB) chart shows prices making new two-week highs this week with prices testing resistance at the June high of 267. A close in late July above the June high would be a very positive signal for commodity prices. The CRB, which we refer to as the ‘Dow Jones of agriculture’, is an index of 20 commodities. When the CRB is trending higher, most grain and livestock will usually move higher as well.