| 2023 |
| 06/20 | (IR情報)15:00 当社株式の上場廃止に関するお知らせ |
| 06/20 | 9,280 | 9,290 | 9,280 | 9,290 | +0.11% | 27,200 | 3001億3946万 | +0.08% |
| 06/19 | 9,280 | 9,290 | 9,280 | 9,280 | -0.22% | 15,700 | 2998億1638万 | -0.02% |
| 06/16 | 9,280 | 9,300 | 9,280 | 9,300 | +0.22% | 85,000 | 3004億6254万 | +0.19% |
| 06/15 | 9,280 | 9,290 | 9,280 | 9,280 | -0.11% | 2,600 | 2998億1638万 | -0.02% |
| 06/14 | 9,280 | 9,290 | 9,280 | 9,290 | 0% | 5,300 | 3001億3946万 | +0.09% |
| 06/13 | (IR情報)11:30 当社社員がラクロス日本代表に選出されました |
| 06/13 | 9,290 | 9,290 | 9,280 | 9,290 | +0.11% | 27,000 | 3001億3946万 | +0.1% |
| 06/12 | 9,290 | 9,290 | 9,280 | 9,280 | -0.11% | 203,600 | 2998億1638万 | -0.01% |
| 06/09 | 9,280 | 9,290 | 9,280 | 9,290 | +0.11% | 13,800 | 3001億3946万 | +0.1% |
| 06/08 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 32,500 | 2998億1638万 | -0.01% |
| 06/07 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 76,500 | 2998億1638万 | -0.01% |
| 06/06 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 37,100 | 2998億1638万 | -0.01% |
| 06/05 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 25,700 | 2998億1638万 | -0.01% |
| 06/02 | (IR情報)16:00 株式併合及び定款の一部変更に係る承認決議に関するお知らせ |
| 06/02 | 9,290 | 9,290 | 9,280 | 9,280 | -0.11% | 17,000 | 2998億1638万 | -0.01% |
| 06/01 | 9,280 | 9,290 | 9,280 | 9,290 | +0.11% | 4,400 | 3001億3946万 | +0.1% |
| 05/31 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 22,400 | 2998億1638万 | 0% |
| 05/30 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 64,700 | 2998億1638万 | 0% |
| 05/29 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 12,600 | 2998億1638万 | -0.01% |
| 05/26 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 6,300 | 2998億1638万 | -0.01% |
| 05/25 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 29,500 | 2998億1638万 | -0.01% |
| 05/24 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 28,200 | 2998億1638万 | -0.01% |
| 05/23 | (IR情報)11:00 人事異動のお知らせ |
| 05/23 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 27,200 | 2998億1638万 | -0.01% |
| 05/22 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 13,400 | 2998億1638万 | -0.01% |
| 05/19 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 23,400 | 2998億1638万 | -0.01% |
| 05/18 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 25,200 | 2998億1638万 | -0.02% |
| 05/17 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 27,900 | 2998億1638万 | -0.02% |
| 05/16 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 29,200 | 2998億1638万 | -0.02% |
| 05/15 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 32,500 | 2998億1638万 | -0.02% |
| 05/12 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 36,100 | 2998億1638万 | -0.02% |
| 05/11 | (IR情報)15:00 通期連結業績と前期実績との差異に関するお知らせ |
| 05/11 | (IR情報)11:30 2022年度決算実績 |
| 05/11 | (IR情報)11:30 2023年3月期決算短信[日本基準](連結) |
| 05/11 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 16,500 | 2998億1638万 | -0.02% |
| 05/10 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 14,800 | 2998億1638万 | -0.03% |
| 05/09 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 12,400 | 2998億1638万 | -0.03% |
| 05/08 | 9,290 | 9,290 | 9,280 | 9,280 | -0.11% | 22,000 | 2998億1638万 | -0.04% |
| 05/02 | 9,290 | 9,290 | 9,280 | 9,290 | +0.11% | 34,600 | 3001億3946万 | +0.06% |
| 05/01 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 170,800 | 2998億1638万 | -0.04% |
| 04/28 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 121,300 | 2998億1638万 | -0.04% |
| 04/27 | (IR情報)15:00 自己株式の消却に関するお知らせ |
| 04/27 | (IR情報)15:00 株式併合並びに単元株式数の定めの廃止及び定款の一部変更に関する臨時株主総会開催のお知らせ |
| 04/27 | 9,290 | 9,300 | 9,280 | 9,280 | 0% | 234,700 | 2998億1638万 | -0.05% |
| 04/26 | (5%ルール)日本製鉄(70.1%)三井物産(19.9%) |
| 04/26 | (5%ルール)日本製鉄(34.49%)三井物産(19.9%) |
| 04/26 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 65,500 | 2998億1638万 | -0.06% |
| 04/25 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 17,700 | 2998億1638万 | -0.06% |
| 04/24 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 64,800 | 2998億1638万 | -0.06% |
| 04/21 | 9,280 | 9,290 | 9,280 | 9,280 | -0.11% | 56,200 | 2998億1638万 | -0.06% |
| 04/20 | (IR情報)11:00 仮監査役(一時監査役職務代行者)選任に関するお知らせ |
| 04/20 | 9,290 | 9,290 | 9,280 | 9,290 | +0.11% | 29,800 | 3001億3946万 | +0.04% |
| 04/19 | 9,290 | 9,300 | 9,280 | 9,280 | 0% | 60,200 | 2998億1638万 | -0.06% |
| 04/18 | (IR情報)11:00 トルコ・シリア地震の被災地支援について |
| 04/18 | 9,280 | 9,290 | 9,270 | 9,280 | 0% | 50,200 | 2998億1638万 | -0.06% |
| 04/17 | 9,280 | 9,290 | 9,270 | 9,280 | 0% | 73,700 | 2998億1638万 | -0.06% |
| 04/14 | (5%ルール)三井物産(19.9%)日本製鉄(70.1%) |
| 04/14 | (5%ルール)日鉄建材(0%)三井物産(19.9%)日本製鉄(70.1%) |
| 04/14 | 9,290 | 9,290 | 9,270 | 9,280 | 0% | 256,600 | 2998億1638万 | -0.04% |
| 04/13 | 9,290 | 9,300 | 9,280 | 9,280 | -0.11% | 782,000 | 2998億1638万 | -0.04% |
| 04/12 | 9,300 | 9,330 | 9,290 | 9,290 | -0.11% | 78,300 | 3001億3946万 | +0.06% |
| 04/11 | (IR情報)15:00 日本製鉄株式会社による当社株式に対する公開買付けの結果並びに親会社及びその他の関係会社の異動に関するお知らせ |
| 04/11 | 9,290 | 9,300 | 9,280 | 9,300 | +0.22% | 72,400 | 3004億6254万 | +0.18% |
| 04/10 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 36,500 | 2998億1638万 | -0.02% |
| 04/07 | 9,280 | 9,290 | 9,270 | 9,280 | +0.11% | 123,200 | 2998億1638万 | -0.02% |
| 04/06 | 9,280 | 9,290 | 9,270 | 9,270 | -0.22% | 201,900 | 2994億9330万 | -0.13% |
| 04/05 | 9,290 | 9,290 | 9,280 | 9,290 | 0% | 135,200 | 3001億3946万 | +0.08% |
| 04/04 | 9,290 | 9,300 | 9,290 | 9,290 | 0% | 62,800 | 3001億3946万 | +0.09% |
| 04/03 | (IR情報)14:00 機構改革および人事異動のお知らせ |
| 04/03 | 9,300 | 9,300 | 9,280 | 9,290 | 0% | 77,900 | 3001億3946万 | +0.1% |
| 03/31 | 9,300 | 9,300 | 9,280 | 9,290 | 0% | 81,600 | 3001億3946万 | +0.11% |
| 03/30 | 9,290 | 9,300 | 9,280 | 9,290 | -0.11% | 85,500 | 3001億3946万 | +0.12% |
| 03/29 | 9,300 | 9,300 | 9,280 | 9,300 | +0.22% | 114,400 | 3004億6254万 | +0.24% |
| 03/28 | (IR情報)15:30 臨時株主総会招集のための基準日設定に関するお知らせ |
| 03/28 | (IR情報)15:30 特定子会社の異動に関するお知らせ |
| 03/28 | 9,290 | 9,300 | 9,280 | 9,280 | -0.11% | 122,100 | 2998億1638万 | +0.03% |
| 03/27 | 9,290 | 9,300 | 9,280 | 9,290 | -0.11% | 63,400 | 3001億3946万 | +0.15% |
| 03/24 | (IR情報)16:00 (訂正)「当社のその他の関係会社である日本製鉄株式会社による当社株式に対する公開買付けに関する賛同の意見表明及び応募推奨のお知らせ」 |
| 03/24 | 9,290 | 9,300 | 9,280 | 9,300 | +0.11% | 272,600 | 3004億6254万 | +0.27% |
| 03/23 | 9,290 | 9,290 | 9,280 | 9,290 | +0.11% | 98,800 | 3001億3946万 | +0.19% |
| 03/22 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 168,100 | 2998億1638万 | +0.11% |
| 03/20 | 9,280 | 9,290 | 9,280 | 9,280 | 0% | 99,900 | 2998億1638万 | +0.14% |
| 03/17 | 9,290 | 9,290 | 9,280 | 9,280 | 0% | 336,400 | 2998億1638万 | +0.16% |
| 03/16 | 9,280 | 9,290 | 9,280 | 9,280 | -0.11% | 139,900 | 2998億1638万 | +0.19% |
| 03/15 | 9,290 | 9,290 | 9,280 | 9,290 | +0.11% | 162,700 | 3001億3946万 | +0.32% |
| 03/14 | 9,280 | 9,290 | 9,280 | 9,280 | -0.11% | 372,200 | 2998億1638万 | +0.24% |
| 03/13 | 9,280 | 9,300 | 9,280 | 9,290 | +0.54% | 411,100 | 3001億3946万 | +0.37% |
| 03/10 | (IR情報)15:00 当社のその他の関係会社である日本製鉄株式会社による当社株式に対する公開買付けに関する賛同の意見表明及び応募推奨のお知らせ |
| 03/10 | (IR情報)15:00 メキシコにおける電磁鋼板用コイルセンター新設の検討について |
| 03/10 | 9,260 | 9,270 | 9,240 | 9,240 | -0.32% | 246,500 | 2985億2407万 | -0.15% |
| 03/09 | 9,280 | 9,280 | 9,260 | 9,270 | 0% | 130,400 | 2994億9330万 | +0.17% |
| 03/08 | (IR情報)15:00 健康経営優良法人2023(大規模法人部門)に4年連続で認定 |
| 03/08 | 9,270 | 9,280 | 9,270 | 9,270 | -0.11% | 58,000 | 2994億9330万 | +0.18% |
| 03/07 | 9,280 | 9,280 | 9,260 | 9,280 | 0% | 117,600 | 2998億1638万 | +0.3% |
| 03/06 | 9,270 | 9,280 | 9,260 | 9,280 | +0.22% | 90,700 | 2998億1638万 | +0.32% |
| 03/03 | (IR情報)12:00 人事異動のお知らせ |
| 03/03 | 9,270 | 9,280 | 9,260 | 9,260 | -0.22% | 116,900 | 2991億7022万 | +0.13% |
| 03/02 | 9,290 | 9,290 | 9,270 | 9,280 | -0.22% | 90,300 | 2998億1638万 | +0.35% |
| 03/01 | 9,280 | 9,300 | 9,270 | 9,300 | +0.32% | 156,700 | 3004億6254万 | +0.58% |
| 02/28 | 9,270 | 9,280 | 9,260 | 9,270 | +0.11% | 405,900 | 2994億9330万 | +0.28% |
| 02/27 | 9,260 | 9,270 | 9,260 | 9,260 | 0% | 55,500 | 2991億7022万 | +0.18% |
| 02/24 | 9,270 | 9,270 | 9,260 | 9,260 | -0.11% | 39,500 | 2991億7022万 | +0.19% |
| 02/22 | 9,270 | 9,290 | 9,270 | 9,270 | -0.11% | 130,700 | 2994億9330万 | +0.31% |
| 02/21 | 9,260 | 9,280 | 9,260 | 9,280 | +0.22% | 162,500 | 2998億1638万 | +0.43% |
| 02/20 | 9,260 | 9,260 | 9,250 | 9,260 | 0% | 59,900 | 2991億7022万 | +0.24% |
| 02/17 | (IR情報)12:00 お知らせ(役員人事等) |
| 02/17 | 9,260 | 9,260 | 9,240 | 9,260 | 0% | 118,600 | 2991億7022万 | +0.24% |
| 02/16 | 9,250 | 9,260 | 9,240 | 9,260 | +0.22% | 169,100 | 2991億7022万 | +0.25% |
| 02/15 | 9,240 | 9,260 | 9,240 | 9,240 | +0.22% | 292,700 | 2985億2407万 | +0.04% |
| 02/14 | 9,230 | 9,230 | 9,220 | 9,220 | 0% | 92,200 | 2978億7791万 | -0.18% |
| 02/13 | 9,230 | 9,230 | 9,220 | 9,220 | 0% | 43,400 | 2978億7791万 | -0.21% |
| 02/10 | (IR情報)11:30 2022年度3Q決算実績 |
| 02/10 | (IR情報)11:30 2023年3月期第3四半期決算短信[日本基準](連結) |
| 02/10 | 9,230 | 9,230 | 9,220 | 9,220 | 0% | 124,700 | 2978億7791万 | -0.22% |
| 02/09 | 9,230 | 9,240 | 9,220 | 9,220 | -0.11% | 215,100 | 2978億7791万 | -0.23% |
| 02/08 | 9,230 | 9,240 | 9,230 | 9,230 | 0% | 72,400 | 2982億99万 | -0.13% |
| 02/07 | 9,240 | 9,250 | 9,230 | 9,230 | 0% | 68,400 | 2982億99万 | -0.13% |
| 02/06 | 9,240 | 9,250 | 9,230 | 9,230 | -0.11% | 152,600 | 2982億99万 | -0.13% |
| 02/03 | 9,240 | 9,250 | 9,240 | 9,240 | 0% | 88,000 | 2985億2407万 | -0.03% |
| 02/02 | (IR情報)11:00 人事異動のお知らせ |
| 02/02 | 9,250 | 9,250 | 9,240 | 9,240 | 0% | 121,700 | 2985億2407万 | -0.04% |
| 02/01 | 9,250 | 9,250 | 9,240 | 9,240 | 0% | 88,600 | 2985億2407万 | -0.04% |
| 01/31 | 9,240 | 9,250 | 9,240 | 9,240 | 0% | 79,600 | 2985億2407万 | +1.09% |
| 01/30 | 9,240 | 9,250 | 9,240 | 9,240 | 0% | 64,500 | 2985億2407万 | +2.7% |
| 01/27 | 9,240 | 9,250 | 9,240 | 9,240 | 0% | 53,500 | 2985億2407万 | +4.69% |
| 01/26 | 9,240 | 9,250 | 9,240 | 9,240 | 0% | 33,200 | 2985億2407万 | +6.73% |
| 01/25 | 9,240 | 9,250 | 9,240 | 9,240 | 0% | 78,600 | 2985億2407万 | +8.86% |