Chicago Board of Trade (CBOT) agricultural futures settled mixed on Wednesday, with soybeans and corn firmer on China trade optimism.

Corn and soybean futures have posted gains in the past two days amid hopes that China would buy more soybeans, and even corn from the United States if the two sides finally strike a trade deal.

Meanwhile, CBOT wheat fell notably as traders locked in profits after the grain surged more than 5 percent during previous session.

CBOT brokers estimated that funds bought 3,200 contracts of corn, 2,300 contracts of soybeans, while selling 2,900 contracts of wheat.

At the end of the session, the most active wheat contract for May delivery was down 5.75 cents, or 1.27 percent to close at 4.4725 U.S. dollars per bushel. May corn was up 0.75 cent, or 0.21 percent, to settle at 3.665 dollars per bushel. May soybeans were up 4 cents, or 0.45 percent, to close at 9.01 dollars per bushel.