Denka Company Limited (TSE:4061) shares rose sharply in early trade on October 26, 2022 after the Japanese chemical company announced it would exit its cement business, which is suffering from high production costs. The shares were recently 8.4% higher at ¥3,490 after rising as much as 8.9% earlier. Denka said after market closed on October 25, 2022 that it planned to sell its cement sales business to Taiheiyo Cement Corporation (TSE:5233) at the end of March 2023 and exit from its cement production business around the first half of 2025.