| 2021 |
| 07/28 | 15:00 当社株式の上場廃止のお知らせ |
| 07/28 | 1,028 | 1,065 | 1,028 | 1,054 | -0.38% | 123,600 | 139億9673万 | -2.32% |
| 07/27 | 1,052 | 1,074 | 1,052 | 1,058 | +1.93% | 43,700 | 140億4985万 | -2.04% |
| 07/26 | 1,035 | 1,051 | 1,033 | 1,038 | +1.76% | 91,200 | 137億8425万 | -4.16% |
| 07/21 | 15:00 自己株式の消却に関するお知らせ |
| 07/21 | 1,033 | 1,042 | 1,020 | 1,020 | 0% | 59,100 | 135億4522万 | -6.16% |
| 07/20 | 1,020 | 1,035 | 1,014 | 1,020 | -2.02% | 19,700 | 135億4522万 | -6.59% |
| 07/19 | 1,037 | 1,059 | 1,037 | 1,041 | -2.44% | 32,900 | 138億2409万 | -5.1% |
| 07/16 | 1,050 | 1,078 | 1,050 | 1,067 | +0.95% | 58,900 | 141億6936万 | -3.18% |
| 07/15 | 1,077 | 1,077 | 1,050 | 1,057 | -2.13% | 34,800 | 140億3657万 | -4.43% |
| 07/14 | 1,094 | 1,094 | 1,075 | 1,080 | -1.19% | 24,500 | 143億4200万 | -2.79% |
| 07/13 | 1,078 | 1,103 | 1,078 | 1,093 | +2.53% | 45,200 | 145億1463万 | -1.97% |
| 07/12 | 15:00 代表取締役の異動および役員人事に関するお知らせ |
| 07/12 | 1,083 | 1,092 | 1,066 | 1,066 | 0% | 16,800 | 141億5608万 | -4.82% |
| 07/09 | 1,036 | 1,066 | 1,029 | 1,066 | +0.95% | 32,200 | 141億5608万 | -5.33% |
| 07/08 | 1,073 | 1,073 | 1,056 | 1,056 | -1.58% | 26,000 | 140億2329万 | -6.88% |
| 07/07 | 1,090 | 1,093 | 1,063 | 1,073 | -1.56% | 19,100 | 142億4904万 | -5.96% |
| 07/06 | 1,095 | 1,114 | 1,090 | 1,090 | -0.46% | 33,200 | 144億7479万 | -4.8% |
| 07/05 | 1,114 | 1,114 | 1,090 | 1,095 | -1.71% | 27,900 | 145億4119万 | -4.7% |
| 07/02 | 1,100 | 1,119 | 1,100 | 1,114 | +1.27% | 36,400 | 147億9351万 | -3.05% |
| 07/01 | 1,104 | 1,112 | 1,093 | 1,100 | -0.54% | 43,900 | 146億759万 | -4.35% |
| 06/30 | 1,109 | 1,111 | 1,090 | 1,106 | +1.84% | 24,900 | 146億8727万 | -3.74% |
| 06/29 | 1,120 | 1,120 | 1,079 | 1,086 | -3.38% | 28,500 | 144億2168万 | -5.4% |
| 06/28 | 1,135 | 1,148 | 1,115 | 1,124 | -0.88% | 32,300 | 149億2630万 | -2.01% |
| 06/25 | 1,118 | 1,145 | 1,118 | 1,134 | +1.61% | 32,000 | 150億5910万 | -0.79% |
| 06/24 | 14:30 支配株主等に関する事項について |
| 06/24 | 1,119 | 1,128 | 1,107 | 1,116 | +0.36% | 30,700 | 148億2007万 | -2.02% |
| 06/23 | 1,120 | 1,128 | 1,105 | 1,112 | -0.71% | 35,100 | 147億6695万 | -2.03% |
| 06/22 | 1,112 | 1,134 | 1,109 | 1,120 | +3.9% | 35,200 | 148億7318万 | -1.06% |
| 06/21 | 18:00 (訂正)「2021年3月期決算短信〔日本基準〕(非連結)」の一部訂正について |
| 06/21 | 1,069 | 1,096 | 1,066 | 1,078 | -2.97% | 31,900 | 143億1544万 | -4.52% |
| 06/18 | 1,141 | 1,141 | 1,106 | 1,111 | -3.14% | 47,100 | 147億5367万 | -1.33% |
| 06/17 | 1,136 | 1,152 | 1,116 | 1,147 | +0.53% | 39,900 | 152億3173万 | +2.69% |
| 06/16 | 1,144 | 1,158 | 1,137 | 1,141 | -0.61% | 27,600 | 151億5206万 | +3.54% |
| 06/15 | 1,173 | 1,180 | 1,142 | 1,148 | -1.96% | 44,400 | 152億4501万 | +5.81% |
| 06/14 | 1,169 | 1,200 | 1,169 | 1,171 | +0.17% | 39,300 | 155億5045万 | +9.54% |
| 06/11 | 1,190 | 1,190 | 1,169 | 1,169 | -1.76% | 22,700 | 155億2389万 | +11.02% |
| 06/10 | 1,184 | 1,195 | 1,168 | 1,190 | +0.76% | 54,100 | 158億276万 | +14.98% |
| 06/09 | 1,209 | 1,211 | 1,180 | 1,181 | -2.07% | 25,500 | 156億8324万 | +16.13% |
| 06/08 | 1,205 | 1,215 | 1,192 | 1,206 | -0.58% | 69,300 | 160億1523万 | +20.72% |
| 06/07 | 1,259 | 1,259 | 1,203 | 1,213 | -3.73% | 88,100 | 161億819万 | +23.9% |
| 06/04 | 1,236 | 1,273 | 1,229 | 1,260 | +1.61% | 81,700 | 167億3233万 | +31.25% |
| 06/03 | 1,210 | 1,246 | 1,209 | 1,240 | +5% | 199,900 | 164億6674万 | +32.2% |
| 06/02 | 1,170 | 1,199 | 1,168 | 1,181 | +0.77% | 114,800 | 156億8324万 | +28.79% |
| 06/01 | 1,151 | 1,180 | 1,149 | 1,172 | +5.87% | 145,000 | 155億6372万 | +30.37% |
| 05/31 | 1,132 | 1,150 | 1,102 | 1,107 | -2.64% | 89,800 | 147億55万 | +25.65% |
| 05/28 | 1,106 | 1,137 | 1,106 | 1,137 | +5.67% | 134,400 | 150億9894万 | +31.29% |
| 05/27 | 1,086 | 1,099 | 1,076 | 1,076 | -1.01% | 95,300 | 142億8888万 | +26.74% |
| 05/26 | 1,057 | 1,093 | 1,055 | 1,087 | +3.82% | 178,200 | 144億3496万 | +30.18% |
| 05/25 | 1,039 | 1,047 | 1,033 | 1,047 | +1.26% | 69,700 | 139億377万 | +27.53% |
| 05/24 | 1,033 | 1,052 | 1,029 | 1,034 | +0.78% | 89,900 | 137億3114万 | +27.97% |
| 05/21 | 1,026 | 1,037 | 1,020 | 1,026 | 0% | 45,800 | 136億2490万 | +28.89% |
| 05/20 | 1,029 | 1,039 | 1,017 | 1,026 | -1.63% | 65,300 | 136億2490万 | +30.87% |
| 05/19 | 1,015 | 1,043 | 1,010 | 1,043 | +0.19% | 142,400 | 138億5065万 | +35.1% |
| 05/18 | 1,000 | 1,054 | 999 | 1,041 | +5.15% | 445,600 | 138億2409万 | +36.97% |
| 05/17 | 917 | 990 | 917 | 990 | +9.76% | 1,224,800 | 131億4683万 | +32.35% |
| 05/14 | 902 | 902 | 902 | 902 | +19.95% | 69,200 | 119億7822万 | +22.06% |
| 05/13 | 15:00 2021年3月期決算短信[日本基準](非連結) |
| 05/13 | 15:00 2020年度経営概況 |
| 05/13 | 15:00 役員人事に関するお知らせ |
| 05/13 | 15:00 株式会社IHIによる明星電気株式会社の簡易株式交換による完全子会社化に関するお知らせ |
| 05/13 | 718 | 762 | 717 | 752 | +2.59% | 38,400 | 99億8628万 | +2.59% |
| 05/12 | 745 | 746 | 723 | 733 | -1.61% | 15,400 | 97億3397万 | +0.14% |
| 05/11 | 764 | 764 | 745 | 745 | -2.23% | 17,200 | 98億9332万 | +1.64% |
| 05/10 | 767 | 767 | 740 | 762 | +3.67% | 33,500 | 101億1908万 | +3.96% |
| 05/07 | 731 | 736 | 731 | 735 | +0.68% | 5,000 | 97億6053万 | +0.27% |
| 05/06 | 725 | 764 | 725 | 730 | +1.67% | 70,000 | 96億9413万 | -0.54% |
| 04/30 | 722 | 722 | 718 | 718 | -0.55% | 6,800 | 95億3477万 | -2.18% |
| 04/28 | 728 | 728 | 721 | 722 | -0.28% | 3,900 | 95億8789万 | -1.9% |
| 04/27 | 730 | 730 | 723 | 724 | -0.41% | 3,800 | 96億1445万 | -1.76% |
| 04/26 | 735 | 735 | 723 | 727 | +0.97% | 3,000 | 96億5429万 | -1.62% |
| 04/23 | 727 | 727 | 717 | 720 | -0.28% | 6,100 | 95億6133万 | -2.83% |
| 04/22 | 723 | 723 | 718 | 722 | +0.98% | 3,000 | 95億8789万 | -2.83% |
| 04/21 | 719 | 722 | 715 | 715 | -1.65% | 11,600 | 94億9493万 | -4.03% |
| 04/20 | 719 | 731 | 719 | 727 | 0% | 12,800 | 96億5429万 | -2.68% |
| 04/19 | 736 | 737 | 727 | 727 | 0% | 4,800 | 96億5429万 | -3.07% |
| 04/16 | 727 | 727 | 725 | 727 | 0% | 1,000 | 96億5429万 | -3.2% |
| 04/15 | 724 | 730 | 723 | 727 | +0.41% | 8,000 | 96億5429万 | -3.45% |
| 04/14 | 731 | 731 | 714 | 724 | 0% | 23,900 | 96億1445万 | -4.11% |
| 04/13 | 729 | 730 | 719 | 724 | -1.09% | 38,900 | 96億1445万 | -4.23% |
| 04/12 | 740 | 741 | 730 | 732 | -1.21% | 24,300 | 97億2069万 | -3.43% |
| 04/09 | 734 | 744 | 727 | 741 | +0.95% | 20,000 | 98億4020万 | -2.37% |
| 04/08 | 750 | 750 | 732 | 734 | -2.26% | 15,000 | 97億4725万 | -3.42% |
| 04/07 | 755 | 755 | 746 | 751 | -0.53% | 8,200 | 99億7300万 | -1.44% |
| 04/06 | 747 | 756 | 736 | 755 | +1.48% | 19,500 | 100億2612万 | -1.18% |
| 04/05 | 743 | 749 | 732 | 744 | +0.13% | 11,700 | 98億8004万 | -2.62% |
| 04/02 | 751 | 752 | 741 | 743 | -0.54% | 9,400 | 98億6676万 | -2.75% |
| 04/01 | 747 | 750 | 738 | 747 | 0% | 17,700 | 99億1988万 | -2.35% |
| 03/31 | 756 | 756 | 735 | 747 | -0.53% | 32,300 | 99億1988万 | -2.23% |
| 03/30 | 754 | 763 | 749 | 751 | -1.31% | 6,600 | 99億7300万 | -1.44% |
| 03/29 | 758 | 769 | 744 | 761 | +1.33% | 31,200 | 101億580万 | +0.13% |
| 03/26 | 762 | 763 | 750 | 751 | -0.53% | 64,500 | 99億7300万 | -0.79% |
| 03/25 | 767 | 767 | 753 | 755 | -0.66% | 9,800 | 100億2612万 | 0% |
| 03/24 | 760 | 765 | 751 | 760 | -0.65% | 24,800 | 100億9252万 | +1.06% |
| 03/23 | 774 | 774 | 765 | 765 | -0.91% | 10,400 | 101億5891万 | +2.27% |
| 03/22 | 771 | 777 | 761 | 772 | +0.13% | 33,300 | 102億5187万 | +3.62% |
| 03/19 | 766 | 778 | 766 | 771 | +0.26% | 10,100 | 102億3859万 | +4.05% |
| 03/18 | 778 | 792 | 750 | 769 | -1.16% | 41,800 | 102億1203万 | +4.48% |
| 03/17 | 781 | 783 | 772 | 778 | -0.51% | 14,000 | 103億3155万 | +6.14% |
| 03/16 | 11:00 組織変更および人事異動に関するお知らせ |
| 03/16 | 766 | 790 | 766 | 782 | +2.22% | 86,000 | 103億8467万 | +7.27% |
| 03/15 | 787 | 787 | 765 | 765 | -1.03% | 19,700 | 101億5891万 | +5.66% |
| 03/12 | 771 | 773 | 766 | 773 | +0.65% | 12,600 | 102億6515万 | +7.36% |
| 03/11 | 770 | 783 | 767 | 768 | -0.13% | 32,800 | 101億9875万 | +7.41% |
| 03/10 | 759 | 770 | 759 | 769 | +1.05% | 26,100 | 102億1203万 | +8.31% |
| 03/09 | 770 | 786 | 758 | 761 | -1.17% | 31,200 | 101億580万 | +7.94% |
| 03/08 | 755 | 785 | 755 | 770 | +0.52% | 40,300 | 102億2531万 | +10.16% |
| 03/05 | 758 | 772 | 751 | 766 | -0.78% | 47,500 | 101億7219万 | +10.37% |
| 03/04 | 790 | 790 | 760 | 772 | -3.26% | 74,000 | 102億5187万 | +12.21% |
| 03/03 | 767 | 803 | 767 | 798 | +4.04% | 84,900 | 105億9714万 | +17.01% |
