Corteva Agriscience, the agricultural chemical and seed business of DowDuPont, is set for its June 1 spin-off. For every three shares in DowDuPont that shareholders own, they will receive one of Corteva. Corteva will begin regular trading on the New York Stock Exchange on June 3 under the symbol CTVA. The businesses that will make up Corteva had $14.3 billion in sales last year. DuPont is also set to separate from DowDuPont on June 1.