As of 10:40 am CST (1640 GMT), March wheat was down 2 cents at $3.43-1/2 per bushel, with deferred months down 1-1/4 to 4-1/2 cents.
RIS-Man and Prudential each sold 500 March contracts while Citigroup and Refco-Man each sold 300, traders said. The nine-day relative strength index for the March contract stood at 81 ahead of the open. Technical traders view an RSI of 70 or higher as one sign of an overbought market.