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CBOT December wheat settled up 3-1/2 cents at $4.17-3/4 per bushel after reaching $4.20-1/4, its highest since Oct. 20.
K.C. December hard red winter wheat settled up 1-3/4 cents at $4.15-1/2 a bushel and MGEX December spring wheat ended down 2-1/4 cents at $5.17-1/4.
Commodity funds maintain a large net short position in CBOT wheat, leaving the market vulnerable to bouts of short-covering.
Ample global grain supplies hang over the market, limiting rallies.