| 2015 |
| 04/17 | 750 | 764 | 737 | 748 | 0% | 40,000 | 453億8274万 | -1.06% |
| 04/16 | 750 | 758 | 746 | 748 | -0.07% | 43,600 | 453億8274万 | -1.06% |
| 04/15 | 748 | 752 | 748 | 749 | -0.33% | 16,000 | 454億1308万 | -0.86% |
| 04/14 | 750 | 756 | 748 | 751 | +0.13% | 23,400 | 455億6476万 | -0.53% |
| 04/13 | 753 | 753 | 747 | 750 | 0% | 41,800 | 455億409万 | -0.66% |
| 04/10 | 760 | 767 | 745 | 750 | -2.22% | 85,000 | 455億409万 | -0.66% |
| 04/09 | 785 | 785 | 757 | 767 | -2.11% | 19,000 | 465億3551万 | +1.46% |
| 04/08 | 775 | 786 | 765 | 784 | +1.82% | 34,000 | 475億3660万 | +3.64% |
| 04/07 | 766 | 777 | 762 | 770 | +0.52% | 27,600 | 466億8719万 | +2.06% |
| 04/06 | 773 | 773 | 764 | 766 | -1.92% | 9,400 | 464億4450万 | +1.53% |
| 04/03 | 785 | 788 | 765 | 781 | +0.77% | 33,800 | 473億5459万 | +3.38% |
| 04/02 | 765 | 785 | 762 | 775 | +1.44% | 70,800 | 469億9055万 | +2.58% |
| 04/01 | 756 | 766 | 744 | 764 | +1.73% | 59,800 | 463億2316万 | +0.99% |
| 03/31 | 770 | 770 | 745 | 751 | -0.66% | 34,400 | 455億3442万 | -0.73% |
| 03/30 | 751 | 769 | 743 | 756 | +2.51% | 51,200 | 458億3778万 | -0.2% |
| 03/27 | 14:00 支配株主等に関する事項について |
| 03/27 | 736 | 763 | 734 | 737 | +0.2% | 94,200 | 447億1535万 | -2.77% |
| 03/26 | 14:00 ストックオプション(新株予約権)の発行に関するお知らせ |
| 03/26 | 743 | 749 | 733 | 736 | -2.45% | 57,000 | 446億2434万 | -3.22% |
| 03/25 | 759 | 759 | 747 | 754 | -0.66% | 17,600 | 457億4677万 | -1.05% |
| 03/24 | 755 | 764 | 750 | 759 | +0.07% | 25,400 | 460億5014万 | -0.52% |
| 03/23 | 765 | 776 | 754 | 759 | -0.85% | 32,600 | 460億1980万 | -0.72% |
| 03/20 | 747 | 768 | 747 | 765 | +1.32% | 41,400 | 464億1417万 | +0.13% |
| 03/19 | 760 | 771 | 755 | 755 | -0.07% | 28,000 | 458億745万 | -1.31% |
| 03/18 | 15:15 子会社(大多喜ガス株式会社)による電力事業への参入について |
| 03/18 | 748 | 760 | 742 | 756 | +1.75% | 37,800 | 458億3778万 | -1.5% |
| 03/17 | 749 | 750 | 737 | 743 | +1.09% | 35,000 | 450億4905万 | -3.32% |
| 03/16 | 744 | 748 | 734 | 735 | -1.94% | 63,400 | 445億6367万 | -4.49% |
| 03/13 | 761 | 762 | 745 | 749 | +2.53% | 92,400 | 454億4341万 | -2.85% |
| 03/12 | 736 | 744 | 726 | 731 | -0.75% | 117,600 | 443億2098万 | -5.38% |
| 03/11 | 747 | 747 | 735 | 736 | -2% | 33,600 | 446億5468万 | -4.91% |
| 03/10 | 771 | 785 | 750 | 751 | -0.27% | 29,800 | 455億6476万 | -3.1% |
| 03/09 | 757 | 760 | 750 | 753 | -1.89% | 24,800 | 456億8610万 | -2.96% |
| 03/06 | 763 | 778 | 762 | 768 | +0.79% | 29,800 | 465億6585万 | -1.1% |
| 03/05 | 754 | 781 | 753 | 762 | +0.53% | 90,000 | 462億182万 | -1.74% |
| 03/04 | 765 | 774 | 758 | 758 | -1.3% | 38,400 | 459億5913万 | -2.26% |
| 03/03 | 777 | 780 | 767 | 768 | -2.23% | 37,400 | 465億6585万 | -0.84% |
| 03/02 | 788 | 791 | 765 | 785 | -0.32% | 20,200 | 476億2761万 | +1.55% |
| 02/27 | 785 | 795 | 780 | 788 | -0.25% | 39,800 | 477億7929万 | +2.14% |
| 02/26 | 778 | 790 | 776 | 790 | +2.73% | 58,000 | 479億64万 | +2.67% |
| 02/25 | 774 | 777 | 765 | 769 | -0.32% | 33,400 | 466億2652万 | +0.2% |
| 02/24 | 778 | 778 | 768 | 771 | -1.09% | 43,400 | 467億7820万 | +0.65% |
| 02/23 | 782 | 782 | 768 | 780 | -0.95% | 45,000 | 472億9391万 | +2.03% |
| 02/20 | 791 | 795 | 782 | 787 | +0.06% | 30,800 | 477億4896万 | +3.28% |
| 02/19 | 789 | 790 | 770 | 787 | +0.51% | 60,200 | 477億1862万 | +3.49% |
| 02/18 | 792 | 792 | 777 | 783 | +0.13% | 102,200 | 474億7593万 | +3.23% |
| 02/17 | 767 | 785 | 767 | 782 | +2.49% | 29,000 | 474億1526万 | +3.37% |
| 02/16 | 795 | 795 | 750 | 763 | -3.79% | 70,400 | 462億6249万 | +1.13% |
| 02/13 | 784 | 800 | 783 | 793 | +1.21% | 162,400 | 480億8265万 | +5.25% |
| 02/12 | 16:30 代表取締役の異動に関するお知らせ |
| 02/12 | 16:30 平成26年12月期決算短信〔日本基準〕(連結) |
| 02/12 | 785 | 798 | 783 | 783 | -0.25% | 57,800 | 475億627万 | +4.4% |
| 02/10 | 788 | 789 | 778 | 785 | -0.32% | 25,800 | 476億2761万 | +5.09% |
| 02/09 | 775 | 788 | 775 | 788 | +0.7% | 15,600 | 477億7929万 | +5.56% |
| 02/06 | 776 | 784 | 760 | 782 | +1.03% | 45,400 | 474億4559万 | +5.11% |
| 02/05 | 778 | 778 | 754 | 774 | -0.26% | 22,200 | 469億6022万 | +4.17% |
| 02/04 | 768 | 776 | 747 | 776 | +1.9% | 48,400 | 470億8156万 | +4.58% |
| 02/03 | 766 | 768 | 754 | 762 | -0.2% | 31,800 | 462億182万 | +2.77% |
| 02/02 | 760 | 765 | 758 | 763 | +0.46% | 44,400 | 462億9282万 | +3.11% |
| 01/30 | 760 | 763 | 743 | 760 | +1.27% | 44,000 | 460億8047万 | +2.77% |
| 01/29 | 750 | 757 | 734 | 750 | -0.53% | 56,200 | 455億409万 | +1.63% |
| 01/28 | 747 | 755 | 734 | 754 | +1.14% | 36,800 | 457億4677万 | +2.31% |
| 01/27 | 741 | 746 | 737 | 746 | +1.15% | 35,800 | 452億3106万 | +1.57% |
| 01/26 | 741 | 741 | 733 | 737 | -0.34% | 8,400 | 447億1535万 | +0.68% |
| 01/23 | 735 | 742 | 726 | 740 | +0.34% | 20,200 | 448億6703万 | +1.3% |
| 01/22 | 738 | 738 | 724 | 737 | -0.2% | 20,600 | 447億1535万 | +0.96% |
| 01/21 | 739 | 739 | 733 | 739 | 0% | 18,600 | 448億636万 | +1.3% |
| 01/20 | 731 | 739 | 716 | 739 | +1.72% | 36,200 | 448億636万 | +1.3% |
| 01/19 | 723 | 728 | 723 | 726 | -0.21% | 22,400 | 440億4796万 | -0.27% |
| 01/16 | 721 | 732 | 711 | 728 | -1.36% | 45,600 | 441億3896万 | -0.21% |
| 01/15 | 729 | 739 | 729 | 738 | +1.24% | 14,400 | 447億4568万 | +1.17% |
| 01/14 | 726 | 734 | 720 | 729 | -0.34% | 17,200 | 441億9964万 | +0.07% |
| 01/13 | 737 | 739 | 728 | 731 | -0.81% | 33,200 | 443億5132万 | +0.41% |
| 01/09 | 728 | 738 | 728 | 737 | +1.38% | 34,400 | 447億1535万 | +1.38% |
| 01/08 | 719 | 736 | 711 | 727 | +1.04% | 25,200 | 441億863万 | +0.14% |
| 01/07 | 708 | 725 | 708 | 720 | -0.42% | 24,600 | 436億5359万 | -0.9% |
| 01/06 | 735 | 737 | 710 | 723 | -2.03% | 58,000 | 438億3560万 | -0.48% |
| 01/05 | 740 | 740 | 728 | 738 | -0.87% | 26,000 | 447億4568万 | +1.44% |
| 2014 |
| 12/30 | 743 | 752 | 718 | 744 | -1.13% | 38,400 | 451億4005万 | +2.48% |
| 12/29 | 755 | 755 | 744 | 753 | -0.13% | 24,800 | 456億5577万 | +3.79% |
| 12/26 | 739 | 756 | 727 | 754 | +0.6% | 42,600 | 457億1644万 | +4.07% |
| 12/25 | 741 | 752 | 735 | 749 | -0.13% | 38,400 | 454億4341万 | +3.6% |
| 12/24 | 750 | 757 | 740 | 750 | +0.74% | 57,600 | 455億409万 | +3.88% |
| 12/22 | 730 | 745 | 728 | 745 | +2.48% | 71,400 | 451億7039万 | +3.26% |
| 12/19 | 715 | 730 | 715 | 727 | +2.47% | 55,000 | 440億7829万 | +0.9% |
| 12/18 | 712 | 712 | 704 | 709 | +2.53% | 35,400 | 430億1653万 | -1.53% |
| 12/17 | 687 | 701 | 684 | 692 | +1.02% | 62,000 | 419億5477万 | -3.96% |
| 12/16 | 698 | 700 | 682 | 685 | -3.39% | 46,600 | 415億3006万 | -5.19% |
| 12/15 | 704 | 715 | 704 | 709 | -1.32% | 29,000 | 429億8619万 | -2.01% |
| 12/12 | 716 | 726 | 716 | 718 | -1.1% | 71,800 | 435億6258万 | -0.69% |
| 12/11 | 722 | 730 | 721 | 726 | -0.75% | 41,600 | 440億4796万 | +0.41% |
| 12/10 | 725 | 739 | 718 | 732 | +1.04% | 48,000 | 443億8165万 | +1.32% |
| 12/09 | 732 | 732 | 722 | 724 | -1.09% | 42,600 | 439億2661万 | +0.42% |
| 12/08 | 727 | 735 | 727 | 732 | +0.62% | 28,400 | 444億1199万 | +1.67% |
| 12/05 | 728 | 730 | 725 | 728 | -0.07% | 30,400 | 441億3896万 | +1.32% |
| 12/04 | 727 | 730 | 723 | 728 | +1.18% | 32,000 | 441億6930万 | +1.82% |
| 12/03 | 725 | 725 | 717 | 720 | +0.14% | 28,200 | 436億5359万 | +1.05% |
| 12/02 | 720 | 720 | 714 | 719 | +0.63% | 20,600 | 435億9291万 | +1.34% |
| 12/01 | 723 | 726 | 710 | 714 | -0.83% | 38,000 | 433億1989万 | +1.13% |
| 11/28 | 718 | 724 | 716 | 720 | -0.76% | 27,000 | 436億8392万 | +2.27% |
| 11/27 | 738 | 738 | 722 | 726 | -1.36% | 45,600 | 440億1762万 | +3.5% |
| 11/26 | 722 | 742 | 717 | 736 | +1.87% | 47,400 | 446億2434万 | +5.37% |
| 11/25 | 730 | 730 | 722 | 722 | -0.41% | 20,200 | 438億527万 | +4.03% |
| 11/21 | 721 | 728 | 715 | 725 | +0.62% | 33,600 | 439億8728万 | +5.07% |
| 11/20 | 730 | 730 | 695 | 721 | -0.35% | 42,200 | 437億1426万 | +4.88% |