| 2021 |
| 04/01 | 1,942 | 1,970 | 1,931 | 1,945 | +0.26% | 550,300 | 4468億7358万 | +0.1% |
| 03/31 | 1,966 | 1,982 | 1,940 | 1,940 | -2.85% | 822,200 | 4457億2481万 | +0.15% |
| 03/30 | 2,001 | 2,007 | 1,987 | 1,997 | -1.24% | 778,100 | 4588億2084万 | +3.42% |
| 03/29 | 1,987 | 2,034 | 1,987 | 2,022 | -0.74% | 1,155,300 | 4645億6472万 | +5.26% |
| 03/26 | 2,050 | 2,069 | 2,034 | 2,037 | +0.99% | 691,600 | 4680億1105万 | +6.71% |
| 03/25 | 1,987 | 2,025 | 1,985 | 2,017 | +1.15% | 676,000 | 4634億1594万 | +6.38% |
| 03/24 | 1,997 | 2,036 | 1,987 | 1,994 | -1.38% | 1,033,600 | 4581億3158万 | +5.84% |
| 03/23 | 2,080 | 2,088 | 2,021 | 2,022 | -3.16% | 635,300 | 4645億6472万 | +7.84% |
| 03/22 | 2,080 | 2,104 | 2,065 | 2,088 | +1.7% | 1,001,400 | 4797億2855万 | +11.9% |
| 03/19 | 2,054 | 2,067 | 2,012 | 2,053 | +0.98% | 1,344,600 | 4716億8713万 | +10.85% |
| 03/18 | 2,041 | 2,053 | 2,026 | 2,033 | +0.69% | 721,100 | 4670億9203万 | +10.49% |
| 03/17 | 1,982 | 2,035 | 1,982 | 2,019 | +0.95% | 871,900 | 4638億7546万 | +10.39% |
| 03/16 | 1,975 | 2,000 | 1,950 | 2,000 | +0.25% | 694,200 | 4595億1011万 | +9.95% |
| 03/15 | （自社株買い）取締役会(2021年2月10日)での決議状況(取得期間2021年2月12日～2021年2月12日) |
| 03/15 | 1,987 | 2,009 | 1,974 | 1,995 | +1.22% | 627,500 | 4583億6133万 | +10.34% |
| 03/12 | 1,948 | 1,972 | 1,918 | 1,971 | +0.92% | 876,100 | 4528億4721万 | +9.68% |
| 03/11 | 1,961 | 1,992 | 1,942 | 1,953 | +1.51% | 1,041,300 | 4487億1162万 | +9.23% |
| 03/10 | 1,905 | 1,928 | 1,889 | 1,924 | 0% | 1,123,400 | 4420億4872万 | +8.21% |
| 03/09 | 1,886 | 1,929 | 1,866 | 1,924 | +3.44% | 981,600 | 4420億4872万 | +8.7% |
| 03/08 | 1,848 | 1,864 | 1,840 | 1,860 | +1.25% | 914,300 | 4273億4440万 | +5.62% |
| 03/05 | 1,800 | 1,837 | 1,791 | 1,837 | +1.94% | 1,055,300 | 4220億6003万 | +4.61% |
| 03/04 | 1,794 | 1,814 | 1,789 | 1,802 | -0.5% | 620,200 | 4140億1861万 | +2.85% |
| 03/03 | 1,799 | 1,813 | 1,784 | 1,811 | +1% | 754,400 | 4160億8640万 | +3.49% |
| 03/02 | 1,820 | 1,831 | 1,782 | 1,793 | +0.06% | 1,175,000 | 4119億5081万 | +2.57% |
| 03/01 | 1,778 | 1,819 | 1,772 | 1,792 | +2.28% | 713,900 | 4117億2106万 | +2.63% |
| 02/26 | 1,775 | 1,777 | 1,752 | 1,752 | -2.45% | 773,500 | 4025億3085万 | +0.4% |
| 02/25 | 1,795 | 1,804 | 1,758 | 1,796 | +0.11% | 885,100 | 4126億4008万 | +2.92% |
| 02/24 | 1,756 | 1,798 | 1,748 | 1,794 | +2.93% | 1,308,200 | 4121億8057万 | +2.99% |
| 02/22 | 1,749 | 1,750 | 1,735 | 1,743 | +1.46% | 779,500 | 4004億6306万 | +0.17% |
| 02/19 | 1,705 | 1,727 | 1,703 | 1,718 | +0.17% | 727,400 | 3947億1918万 | -1.38% |
| 02/18 | 1,719 | 1,732 | 1,706 | 1,715 | -0.29% | 454,400 | 3940億2992万 | -1.78% |
| 02/17 | 1,745 | 1,750 | 1,711 | 1,720 | -1.99% | 842,800 | 3951億7869万 | -1.71% |
| 02/16 | 1,800 | 1,801 | 1,744 | 1,755 | -2.23% | 626,100 | 4032億2012万 | +0.06% |
| 02/15 | 1,799 | 1,815 | 1,784 | 1,795 | +2.57% | 715,300 | 4124億1032万 | +2.16% |
| 02/12 | （IR情報）10:00 自己株式立会外買付取引(ToSTNeT-3)による自己株式の取得結果及び取得終了に関するお知らせ |
| 02/12 | 1,750 | 1,753 | 1,728 | 1,750 | +0.06% | 900,100 | 4020億7134万 | -0.57% |
| 02/10 | （IR情報）16:00 ケミカル関連事業における新会社を設立、連結子会社統合のお知らせ |
| 02/10 | （IR情報）16:00 2021年3月期第3四半期決算説明資料 |
| 02/10 | （IR情報）16:00 簡易株式交換による株式会社日本海水の完全子会社化に関するお知らせ |
| 02/10 | （IR情報）16:00 自己株式取得及び自己株式立会外買付取引(ToSTNeT3)による自己株式の買付けに関するお知らせ |
| 02/10 | （IR情報）16:00 2021年3月期第3四半期決算短信〔IFRS〕(連結) |
| 02/10 | 1,734 | 1,770 | 1,734 | 1,749 | +0.11% | 924,500 | 4018億4159万 | -0.68% |
| 02/09 | 1,773 | 1,775 | 1,735 | 1,747 | -1.19% | 996,500 | 4013億8208万 | -0.96% |
| 02/08 | 1,751 | 1,777 | 1,748 | 1,768 | +2.2% | 888,700 | 4062億694万 | +0.11% |
| 02/05 | 1,734 | 1,739 | 1,705 | 1,730 | -0.12% | 825,800 | 3974億7624万 | -2.2% |
| 02/04 | 1,735 | 1,739 | 1,716 | 1,732 | -0.35% | 592,300 | 3979億3575万 | -2.37% |
| 02/03 | 1,743 | 1,745 | 1,717 | 1,738 | +1.22% | 535,500 | 3993億1428万 | -2.19% |
| 02/02 | 1,709 | 1,735 | 1,685 | 1,717 | -0.17% | 759,700 | 3944億8943万 | -3.54% |
| 02/01 | 1,676 | 1,727 | 1,670 | 1,720 | +1.59% | 617,500 | 3951億7869万 | -3.53% |
| 01/29 | 1,726 | 1,739 | 1,689 | 1,693 | -2.08% | 847,600 | 3889億7531万 | -5.15% |
| 01/28 | 1,718 | 1,745 | 1,703 | 1,729 | -0.4% | 3,043,300 | 3972億4649万 | -3.35% |
| 01/27 | 1,759 | 1,767 | 1,728 | 1,736 | -1.31% | 959,300 | 3988億5477万 | -3.18% |
| 01/26 | 1,761 | 1,776 | 1,750 | 1,759 | +0.06% | 892,400 | 4041億3914万 | -2.11% |
| 01/25 | 1,737 | 1,758 | 1,733 | 1,758 | +0.51% | 756,200 | 4039億939万 | -2.28% |
| 01/22 | 1,752 | 1,755 | 1,738 | 1,749 | -0.46% | 592,300 | 4018億4159万 | -2.94% |
| 01/21 | 1,762 | 1,772 | 1,742 | 1,757 | +0.46% | 1,274,000 | 4036億7963万 | -2.71% |
| 01/20 | 1,739 | 1,750 | 1,727 | 1,749 | +0.63% | 725,700 | 4018億4159万 | -3.37% |
| 01/19 | 1,749 | 1,749 | 1,727 | 1,738 | -0.34% | 726,500 | 3993億1428万 | -4.14% |
| 01/18 | 1,781 | 1,784 | 1,743 | 1,744 | -2.13% | 579,500 | 4006億9281万 | -3.91% |
| 01/15 | 1,805 | 1,807 | 1,781 | 1,782 | -1.49% | 606,600 | 4094億2351万 | -1.87% |
| 01/14 | 1,810 | 1,828 | 1,795 | 1,809 | -0.33% | 841,800 | 4156億2689万 | -0.44% |
| 01/13 | 1,818 | 1,826 | 1,798 | 1,815 | -0.98% | 661,500 | 4170億542万 | -0.17% |
| 01/12 | 1,850 | 1,857 | 1,826 | 1,833 | -0.22% | 846,900 | 4211億4101万 | +0.83% |
| 01/08 | 1,846 | 1,854 | 1,815 | 1,837 | -0.76% | 903,500 | 4220億6003万 | +1.16% |
| 01/07 | 1,831 | 1,867 | 1,828 | 1,851 | +3.12% | 841,500 | 4252億7661万 | +1.98% |
| 01/06 | 1,816 | 1,817 | 1,786 | 1,795 | -0.66% | 893,100 | 4124億1032万 | -0.88% |
| 01/05 | 1,800 | 1,818 | 1,794 | 1,807 | -0.28% | 576,400 | 4151億6738万 | -0.06% |
| 01/04 | 1,852 | 1,852 | 1,792 | 1,812 | -1.2% | 355,800 | 4163億1616万 | +0.33% |
| 2020 |
| 12/30 | 1,835 | 1,847 | 1,813 | 1,834 | -0.86% | 1,117,800 | 4213億7077万 | +1.72% |
| 12/29 | 1,841 | 1,850 | 1,828 | 1,850 | +1.43% | 1,162,400 | 4250億4685万 | +2.78% |
| 12/28 | 1,815 | 1,824 | 1,799 | 1,824 | +1.39% | 633,500 | 4190億7322万 | +1.45% |
| 12/25 | 1,798 | 1,817 | 1,791 | 1,799 | +0.73% | 459,100 | 4133億2934万 | +0.17% |
| 12/24 | 1,795 | 1,809 | 1,772 | 1,786 | +0.9% | 915,800 | 4103億4253万 | -0.5% |
| 12/23 | 1,771 | 1,784 | 1,751 | 1,770 | -1.34% | 747,000 | 4066億6645万 | -1.28% |
| 12/22 | 1,811 | 1,817 | 1,785 | 1,794 | -2.29% | 588,700 | 4121億8057万 | +0.11% |
| 12/21 | 1,845 | 1,848 | 1,814 | 1,836 | +0.38% | 643,700 | 4218億3028万 | +2.57% |
| 12/18 | 1,819 | 1,832 | 1,804 | 1,829 | +0.99% | 830,600 | 4202億2199万 | +2.41% |
| 12/17 | 1,814 | 1,816 | 1,792 | 1,811 | -1.15% | 615,900 | 4160億8640万 | +1.86% |
| 12/16 | 1,860 | 1,867 | 1,830 | 1,832 | -0.7% | 798,700 | 4209億1126万 | +3.44% |
| 12/15 | 1,849 | 1,866 | 1,837 | 1,845 | -0.86% | 676,800 | 4238億9808万 | +4.83% |
| 12/14 | 1,842 | 1,881 | 1,838 | 1,861 | +1.75% | 1,057,900 | 4275億7416万 | +6.4% |
| 12/11 | 1,784 | 1,832 | 1,782 | 1,829 | +2.87% | 900,400 | 4202億2199万 | +5.36% |
| 12/10 | 1,773 | 1,789 | 1,760 | 1,778 | -0.34% | 864,000 | 4085億449万 | +3.13% |
| 12/09 | 1,791 | 1,801 | 1,771 | 1,784 | -1.33% | 1,029,500 | 4098億8302万 | +4.14% |
| 12/08 | 1,825 | 1,842 | 1,802 | 1,808 | -1.09% | 719,500 | 4153億9714万 | +6.17% |
| 12/07 | 1,858 | 1,866 | 1,805 | 1,828 | +0.33% | 780,000 | 4199億9224万 | +8.1% |
| 12/04 | （5%ルール）日興アセットマネジメント（2.18%）三井住友トラスト・アセットマネジメント（2.8%）三井住友信託銀行（3.45%） |
| 12/04 | 1,785 | 1,822 | 1,782 | 1,822 | +1.9% | 577,000 | 4186億1371万 | +8.52% |
| 12/03 | 1,793 | 1,813 | 1,777 | 1,788 | -0.89% | 994,000 | 4108億204万 | +7.26% |
| 12/02 | 1,749 | 1,808 | 1,737 | 1,804 | +3.8% | 1,262,600 | 4144億7812万 | +8.81% |
| 12/01 | 1,726 | 1,746 | 1,709 | 1,738 | +0.99% | 769,600 | 3993億1428万 | +5.53% |
| 11/30 | 1,766 | 1,766 | 1,695 | 1,721 | -1.94% | 2,297,300 | 3954億845万 | +5.07% |
| 11/27 | 1,760 | 1,769 | 1,739 | 1,755 | +0.8% | 1,321,300 | 4032億2012万 | +7.8% |
| 11/26 | 1,754 | 1,763 | 1,733 | 1,741 | -1.86% | 759,000 | 4000億355万 | +7.67% |
| 11/25 | 1,800 | 1,809 | 1,767 | 1,774 | -1.11% | 969,700 | 4075億8547万 | +10.46% |
| 11/24 | 1,795 | 1,833 | 1,780 | 1,794 | +1.18% | 1,245,100 | 4121億8057万 | +12.62% |
| 11/20 | 1,771 | 1,779 | 1,754 | 1,773 | -0.51% | 1,081,300 | 4073億5571万 | +12.22% |
| 11/19 | 1,720 | 1,782 | 1,714 | 1,782 | +3.24% | 1,374,400 | 4094億2351万 | +13.72% |
| 11/18 | （5%ルール）日本製鉄（3%） |
| 11/18 | 1,724 | 1,736 | 1,709 | 1,726 | -1.32% | 992,800 | 3965億5722万 | +11.07% |
| 11/17 | 1,742 | 1,754 | 1,728 | 1,749 | +0.23% | 1,167,900 | 4018億4159万 | +13.2% |
| 11/16 | 1,725 | 1,765 | 1,707 | 1,745 | +0.4% | 1,688,000 | 4009億2257万 | +13.68% |
| 11/13 | 1,650 | 1,744 | 1,645 | 1,738 | +7.82% | 2,917,700 | 3993億1428万 | +13.89% |
| 11/12 | （IR情報）15:00 2021年3月期第2四半期決算説明資料 |
| 11/12 | （IR情報）15:00 2021年3月期第2四半期決算短信〔IFRS〕(連結) |
| 11/12 | 1,645 | 1,645 | 1,602 | 1,612 | -1.47% | 1,027,200 | 3703億6515万 | +6.26% |
| 11/11 | （IR情報）11:30 「従業員持株会信託型ESOP」の導入に関するお知らせ |
| 11/11 | 1,603 | 1,641 | 1,603 | 1,636 | +4.01% | 1,876,100 | 3758億7927万 | +8.13% |
| 11/10 | 1,599 | 1,616 | 1,559 | 1,573 | +1.09% | 1,172,000 | 3614億470万 | +4.38% |
| 11/09 | 1,580 | 1,581 | 1,550 | 1,556 | -0.13% | 623,200 | 3574億9886万 | +3.53% |
| 11/06 | 1,559 | 1,570 | 1,550 | 1,558 | +2.5% | 709,500 | 3579億5837万 | +4.07% |
| 11/05 | 1,514 | 1,527 | 1,486 | 1,520 | +0.66% | 664,500 | 3492億2768万 | +1.95% |
