| 2026 |
| 03/06 | 666 | 669 | 664 | 667 | +0.15% | 31,400 | 138億890万 | -1.77% |
| 03/05 | 667 | 672 | 665 | 666 | +1.37% | 53,600 | 137億8819万 | -2.06% |
| 03/04 | 655 | 666 | 655 | 657 | -1.2% | 110,800 | 136億187万 | -3.38% |
| 03/03 | 685 | 686 | 662 | 665 | -5% | 319,400 | 137億6749万 | -2.35% |
| 03/02 | (IR情報)16:00 GMSグループ株式会社の新規上場承認に関するお知らせ |
| 03/02 | 697 | 702 | 692 | 700 | +0.29% | 49,900 | 144億9210万 | +2.64% |
| 02/27 | 691 | 701 | 690 | 698 | +0.87% | 112,200 | 144億5069万 | +2.35% |
| 02/26 | 695 | 695 | 687 | 692 | +0.44% | 27,000 | 143億2647万 | +1.62% |
| 02/25 | 688 | 694 | 688 | 689 | +0.15% | 27,600 | 142億6436万 | +1.32% |
| 02/24 | 688 | 692 | 686 | 688 | +0.58% | 45,400 | 142億4366万 | +1.18% |
| 02/20 | 688 | 689 | 683 | 684 | -0.58% | 35,600 | 141億6085万 | +0.59% |
| 02/19 | 690 | 691 | 686 | 688 | -0.15% | 25,100 | 142億4366万 | +1.33% |
| 02/18 | 685 | 690 | 684 | 689 | +0.73% | 27,400 | 142億6436万 | +1.47% |
| 02/17 | 685 | 687 | 683 | 684 | -0.15% | 17,300 | 141億6085万 | +0.88% |
| 02/16 | 688 | 692 | 685 | 685 | -0.58% | 34,900 | 141億8155万 | +1.03% |
| 02/13 | 684 | 689 | 678 | 689 | +0.58% | 54,100 | 142億6436万 | +1.62% |
| 02/12 | 688 | 692 | 683 | 685 | -0.29% | 100,200 | 141億8155万 | +1.18% |
| 02/10 | 681 | 687 | 680 | 687 | +1.48% | 40,600 | 142億2296万 | +1.63% |
| 02/09 | 689 | 689 | 677 | 677 | 0% | 98,100 | 140億1593万 | +0.3% |
| 02/06 | 677 | 688 | 668 | 677 | +0.3% | 56,300 | 140億1593万 | +0.3% |
| 02/05 | 673 | 680 | 668 | 675 | +1.35% | 37,400 | 139億7452万 | +0.15% |
| 02/04 | 663 | 672 | 656 | 666 | +0.45% | 54,600 | 137億8819万 | -1.04% |
| 02/03 | 656 | 665 | 655 | 663 | +1.07% | 70,600 | 137億2608万 | -1.34% |
| 02/02 | 673 | 676 | 654 | 656 | -3.53% | 131,200 | 135億8116万 | -2.24% |
| 01/30 | (IR情報)15:30 臨時株主総会の決議結果に関するお知らせ |
| 01/30 | (IR情報)15:30 特別損失(訴訟関連損失)の計上及び通期連結業績予想の修正に関するお知らせ |
| 01/30 | (IR情報)15:30 2026年3月期第3四半期決算短信〔日本基準〕(連結) |
| 01/30 | 672 | 680 | 670 | 680 | +0.74% | 40,200 | 140億7804万 | +1.34% |
| 01/29 | 674 | 675 | 670 | 675 | +0.3% | 36,200 | 139億7452万 | +0.9% |
| 01/28 | 678 | 678 | 671 | 673 | -1.17% | 46,300 | 139億3311万 | +0.75% |
| 01/27 | (IR情報)16:00 当社に対する訴訟の判決に関するお知らせ |
| 01/27 | 682 | 683 | 678 | 681 | -0.15% | 32,300 | 140億9874万 | +2.1% |
| 01/26 | 690 | 691 | 682 | 682 | -1.3% | 44,300 | 141億1944万 | +2.4% |
| 01/23 | 692 | 694 | 685 | 691 | +0.14% | 69,600 | 143億577万 | +4.07% |
| 01/22 | 678 | 692 | 678 | 690 | +1.77% | 98,800 | 142億8507万 | +4.23% |
| 01/21 | 678 | 680 | 668 | 678 | 0% | 69,400 | 140億3663万 | +2.57% |
| 01/20 | 685 | 690 | 675 | 678 | -0.73% | 117,900 | 140億3663万 | +2.88% |
| 01/19 | 680 | 691 | 679 | 683 | +1.04% | 87,700 | 141億4014万 | +3.8% |
| 01/16 | 678 | 679 | 674 | 676 | -0.15% | 45,600 | 139億9522万 | +3.05% |
| 01/15 | 676 | 679 | 674 | 677 | +0.3% | 46,800 | 140億1593万 | +3.36% |
| 01/14 | 676 | 678 | 673 | 675 | 0% | 46,800 | 139億7452万 | +3.21% |
| 01/13 | 678 | 681 | 675 | 675 | 0% | 42,900 | 139億7452万 | +3.37% |
| 01/09 | 683 | 683 | 674 | 675 | -0.15% | 36,000 | 139億7452万 | +3.69% |
| 01/08 | 678 | 683 | 676 | 676 | -0.15% | 53,400 | 139億9522万 | +4% |
| 01/07 | 672 | 679 | 670 | 677 | +1.2% | 55,000 | 140億1593万 | +4.31% |
| 01/06 | 666 | 672 | 665 | 669 | +1.06% | 81,500 | 138億5030万 | +3.24% |
| 01/05 | 661 | 664 | 660 | 662 | +0.61% | 49,800 | 137億538万 | +2.32% |
| 2025 |
| 12/30 | 653 | 662 | 653 | 658 | +0.46% | 32,900 | 136億2257万 | +2.02% |
| 12/29 | 652 | 658 | 650 | 655 | +1.39% | 46,000 | 135億6046万 | +1.55% |
| 12/26 | 648 | 650 | 646 | 646 | 0% | 43,300 | 133億7413万 | +0.31% |
| 12/25 | 644 | 647 | 643 | 646 | +0.31% | 33,200 | 133億7413万 | +0.31% |
| 12/24 | 645 | 647 | 644 | 644 | -0.16% | 29,200 | 133億3273万 | 0% |
| 12/23 | 645 | 646 | 643 | 645 | +0.16% | 25,700 | 133億5343万 | 0% |
| 12/22 | 646 | 648 | 643 | 644 | -0.31% | 33,000 | 133億3273万 | -0.16% |
| 12/19 | 646 | 648 | 644 | 646 | -0.15% | 21,500 | 133億7413万 | 0% |
| 12/18 | 645 | 647 | 643 | 647 | 0% | 27,400 | 133億9484万 | -0.15% |
| 12/17 | 646 | 647 | 644 | 647 | +0.15% | 21,200 | 133億9484万 | -0.46% |
| 12/16 | 646 | 650 | 645 | 646 | +0.16% | 21,400 | 133億7413万 | -0.77% |
| 12/15 | 644 | 647 | 643 | 645 | -0.31% | 24,800 | 133億5343万 | -1.23% |
| 12/12 | 647 | 648 | 641 | 647 | +0.78% | 34,900 | 133億9484万 | -0.92% |
| 12/11 | 644 | 646 | 642 | 642 | -0.31% | 16,000 | 132億9132万 | -1.83% |
| 12/10 | 645 | 647 | 643 | 644 | -0.62% | 21,900 | 133億3273万 | -1.68% |
| 12/09 | 644 | 648 | 644 | 648 | +0.62% | 15,900 | 134億1554万 | -1.07% |
| 12/08 | 640 | 646 | 640 | 644 | +0.47% | 14,000 | 133億3273万 | -1.83% |
| 12/05 | 646 | 646 | 641 | 641 | -0.77% | 17,200 | 132億7062万 | -2.44% |
| 12/04 | 642 | 646 | 642 | 646 | +0.47% | 14,300 | 133億7413万 | -1.67% |
| 12/03 | 650 | 650 | 640 | 643 | -0.31% | 36,400 | 133億1202万 | -2.28% |
| 12/02 | 650 | 653 | 645 | 645 | -0.62% | 17,300 | 133億5343万 | -2.12% |
| 12/01 | 650 | 654 | 646 | 649 | +0.15% | 26,600 | 134億3624万 | -1.52% |
| 11/28 | 638 | 650 | 638 | 648 | +1.73% | 50,800 | 134億1554万 | -1.82% |
| 11/27 | 636 | 638 | 625 | 637 | +1.11% | 125,400 | 131億8781万 | -3.48% |
| 11/26 | 640 | 643 | 629 | 630 | -1.41% | 93,000 | 130億4289万 | -4.69% |
| 11/25 | 645 | 645 | 636 | 639 | -1.24% | 70,800 | 132億2921万 | -3.47% |
| 11/21 | 646 | 650 | 645 | 647 | -0.31% | 16,100 | 133億9484万 | -2.41% |
| 11/20 | 648 | 655 | 648 | 649 | 0% | 25,300 | 134億3624万 | -2.11% |
| 11/19 | 650 | 655 | 648 | 649 | -0.15% | 36,300 | 134億3624万 | -2.11% |
| 11/18 | 656 | 660 | 650 | 650 | -0.76% | 33,000 | 134億5695万 | -1.96% |
| 11/17 | 671 | 672 | 655 | 655 | -3.11% | 62,300 | 135億6046万 | -1.21% |
| 11/14 | (IR情報)15:30 譲渡制限付株式報酬制度の改定に関するお知らせ |
| 11/14 | (IR情報)15:30 臨時株主総会招集のための基準日設定および臨時株主総会の開催並びに定款の一部変更に関するお知らせ |
| 11/14 | (IR情報)15:30 【補足資料】日精樹脂工業株式会社とTOYOイノベックス株式会社との経営統合に関するお知らせ |
| 11/14 | (IR情報)15:30 日精樹脂工業株式会社とTOYOイノベックス株式会社との共同持株会社設立(株式移転)による経営統合に関する経営統合契約書締結のお知らせ |
| 11/14 | (IR情報)15:30 2026年3月期第2四半期(中間期)業績予想と実績の差異に関するお知らせ |
| 11/14 | (IR情報)15:30 2026年3月期第2四半期(中間期)決算短信〔日本基準〕(連結) |
| 11/14 | 694 | 699 | 674 | 676 | -3.15% | 82,500 | 139億9522万 | +1.96% |
| 11/13 | 700 | 700 | 688 | 698 | +1.9% | 88,300 | 144億5069万 | +5.44% |
| 11/12 | 669 | 695 | 667 | 685 | +1.48% | 76,600 | 141億8155万 | +3.63% |
| 11/11 | 678 | 686 | 662 | 675 | -1.6% | 102,400 | 139億7452万 | +2.43% |
| 11/10 | 657 | 692 | 654 | 686 | +4.41% | 126,500 | 142億225万 | +4.1% |
| 11/07 | 657 | 660 | 655 | 657 | -0.61% | 17,300 | 136億187万 | 0% |
| 11/06 | 661 | 662 | 657 | 661 | 0% | 10,300 | 136億8468万 | +0.61% |
| 11/05 | 660 | 664 | 655 | 661 | -0.3% | 16,600 | 136億8468万 | +0.61% |
| 11/04 | 656 | 664 | 656 | 663 | 0% | 25,700 | 137億2608万 | +0.91% |
| 10/31 | 662 | 663 | 655 | 663 | -0.15% | 20,100 | 137億2608万 | +0.76% |
| 10/30 | 656 | 665 | 655 | 664 | +1.22% | 39,200 | 137億4679万 | +0.76% |
| 10/29 | 663 | 663 | 656 | 656 | -0.3% | 14,200 | 135億8116万 | -0.61% |
| 10/28 | 663 | 663 | 658 | 658 | -0.75% | 10,000 | 136億2257万 | -0.45% |
| 10/27 | 660 | 663 | 658 | 663 | +0.3% | 16,400 | 137億2608万 | +0.15% |
| 10/24 | 662 | 665 | 661 | 661 | -0.6% | 7,600 | 136億8468万 | -0.15% |
| 10/23 | 662 | 666 | 662 | 665 | +0.45% | 6,700 | 137億6749万 | +0.3% |
| 10/22 | 655 | 665 | 655 | 662 | +0.61% | 17,700 | 137億538万 | -0.15% |
| 10/21 | 657 | 662 | 655 | 658 | 0% | 15,800 | 136億2257万 | -0.75% |
| 10/20 | 656 | 660 | 653 | 658 | +1.23% | 13,700 | 136億2257万 | -0.75% |
| 10/17 | 655 | 655 | 645 | 650 | -0.76% | 20,700 | 134億5695万 | -2.11% |
| 10/16 | 654 | 660 | 652 | 655 | 0% | 12,300 | 135億6046万 | -1.36% |
| 10/15 | 644 | 656 | 644 | 655 | +1.71% | 13,200 | 135億6046万 | -1.5% |
| 10/14 | 640 | 645 | 638 | 644 | -0.31% | 30,500 | 133億3273万 | -3.16% |
| 10/10 | 655 | 655 | 646 | 646 | -1.52% | 31,800 | 133億7413万 | -3% |
| 10/09 | 658 | 660 | 654 | 656 | -0.3% | 21,300 | 135億8116万 | -1.65% |
| 10/08 | 656 | 661 | 656 | 658 | +0.3% | 12,300 | 136億2257万 | -1.35% |
| 10/07 | 661 | 661 | 655 | 656 | 0% | 21,200 | 135億8116万 | -1.65% |