Syngenta, the world’s largest agrochemicals company, fended off a $47 billion offer from U.S. group Monsanto (MON.N) in August and reportedly rejected a $42 billion pursuit by state-owned China National Chemical Corp or ChemChina last month. Syngenta’s U.S.-listed shares rose more than 7 percent and closed up 1.69 percent at 366.10 Swiss Francs on Wednesday in Switzerland.