| 2020 |
| 05/15 | （IR情報）15:30 当社株式の上場廃止のお知らせ |
| 05/15 | 7,990 | 8,000 | 7,990 | 7,990 | 0% | 208,000 | 1兆1005億 | +0.26% |
| 05/14 | 7,980 | 8,000 | 7,980 | 7,990 | 0% | 40,400 | 1兆1005億 | +0.3% |
| 05/13 | 7,980 | 8,000 | 7,980 | 7,990 | +0.13% | 254,200 | 1兆1005億 | +0.3% |
| 05/12 | （IR情報）15:00 Techcomp Scientific Limited株式取得(子会社化)に関するお知らせ |
| 05/12 | 7,980 | 7,990 | 7,980 | 7,980 | -0.13% | 86,200 | 1兆991億 | +0.19% |
| 05/11 | 7,980 | 8,000 | 7,980 | 7,990 | -0.13% | 55,200 | 1兆1005億 | +0.33% |
| 05/08 | 7,990 | 8,000 | 7,980 | 8,000 | +0.13% | 41,700 | 1兆1019億 | +0.45% |
| 05/07 | 7,970 | 8,000 | 7,970 | 7,990 | +0.25% | 135,100 | 1兆1005億 | +0.35% |
| 05/01 | 7,980 | 7,990 | 7,970 | 7,970 | -0.38% | 221,600 | 1兆977億 | +0.1% |
| 04/30 | 7,990 | 8,000 | 7,970 | 8,000 | +0.25% | 304,400 | 1兆1019億 | +0.48% |
| 04/28 | 7,970 | 7,990 | 7,970 | 7,980 | +0.13% | 130,400 | 1兆991億 | +0.25% |
| 04/27 | （IR情報）15:30 2020年3月期決算短信〔IFRS〕(連結) |
| 04/27 | 7,980 | 7,980 | 7,970 | 7,970 | +0.13% | 59,400 | 1兆977億 | +0.15% |
| 04/24 | 7,980 | 7,980 | 7,960 | 7,960 | -0.25% | 249,400 | 1兆964億 | +0.08% |
| 04/23 | 7,980 | 7,980 | 7,960 | 7,980 | +0.13% | 124,200 | 1兆991億 | +0.35% |
| 04/22 | （5%ルール）日立製作所（99.84%） |
| 04/22 | 7,960 | 7,980 | 7,960 | 7,970 | +0.13% | 205,400 | 1兆977億 | +0.25% |
| 04/21 | 7,940 | 7,970 | 7,930 | 7,960 | +0.25% | 2,057,000 | 1兆964億 | +0.15% |
| 04/20 | 7,930 | 7,950 | 7,930 | 7,940 | +0.13% | 528,400 | 1兆936億 | -0.08% |
| 04/17 | （5%ルール）Segantii Capital Management Limited（0%） |
| 04/17 | 7,950 | 7,950 | 7,930 | 7,930 | -0.25% | 933,900 | 1兆922億 | -0.19% |
| 04/16 | （IR情報）15:30 株式会社日立製作所による当社株式に係る株式売渡請求を行うことの決定、当該株式売渡請求に係る承認及び当社株式の上場廃止に関するお知らせ |
| 04/16 | （IR情報）15:30 (開示事項の経過)臨時株主総会の不開催及び基準日の取消しに関するお知らせ |
| 04/16 | 7,940 | 7,950 | 7,940 | 7,950 | +0.13% | 348,700 | 1兆950億 | +0.04% |
| 04/15 | 7,950 | 7,950 | 7,940 | 7,940 | -0.13% | 339,200 | 1兆936億 | -0.1% |
| 04/14 | 7,960 | 7,960 | 7,940 | 7,950 | 0% | 396,700 | 1兆950億 | 0% |
| 04/13 | 7,950 | 7,960 | 7,950 | 7,950 | -0.13% | 278,600 | 1兆950億 | -0.01% |
| 04/10 | （5%ルール）日立ハイテク（0%）日立製作所（90.41%） |
| 04/10 | 7,940 | 7,970 | 7,930 | 7,960 | +0.63% | 690,000 | 1兆964億 | +0.09% |
| 04/09 | 7,980 | 7,990 | 7,910 | 7,910 | -1% | 3,654,800 | 1兆895億 | -0.58% |
| 04/08 | 7,970 | 8,010 | 7,960 | 7,990 | +0.13% | 381,000 | 1兆1005億 | +0.38% |
| 04/07 | （IR情報）10:00 支配株主である株式会社日立製作所による当社株式に対する公開買付けの結果に関するお知らせ |
| 04/07 | 7,960 | 8,050 | 7,950 | 7,980 | +0.63% | 423,600 | 1兆991億 | +0.26% |
| 04/06 | 7,950 | 7,990 | 7,930 | 7,930 | -0.75% | 357,700 | 1兆922億 | -0.36% |
| 04/03 | 7,950 | 7,990 | 7,930 | 7,990 | +0.38% | 285,100 | 1兆1005億 | +0.36% |
| 04/02 | 7,960 | 7,970 | 7,960 | 7,960 | +0.13% | 495,100 | 1兆964億 | -0.01% |
| 04/01 | （5%ルール）Segantii Capital Management Limited（5.18%） |
| 04/01 | 7,970 | 7,980 | 7,950 | 7,950 | -0.38% | 1,056,000 | 1兆950億 | -0.15% |
| 03/31 | 7,970 | 7,980 | 7,960 | 7,980 | +0.25% | 732,500 | 1兆991億 | +0.2% |
| 03/30 | 7,980 | 7,990 | 7,950 | 7,960 | -0.38% | 861,200 | 1兆964億 | -0.08% |
| 03/27 | 7,980 | 8,000 | 7,970 | 7,990 | +0.13% | 798,000 | 1兆1005億 | +0.28% |
| 03/26 | （IR情報）15:00 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 |
| 03/26 | 7,940 | 7,980 | 7,940 | 7,980 | +0.5% | 941,400 | 1兆991億 | +0.14% |
| 03/25 | 7,940 | 7,960 | 7,940 | 7,940 | +0.13% | 674,800 | 1兆936億 | -0.39% |
| 03/24 | 7,950 | 7,950 | 7,910 | 7,930 | +0.63% | 1,220,400 | 1兆922億 | -0.55% |
| 03/23 | 7,900 | 7,920 | 7,880 | 7,880 | -0.38% | 1,826,600 | 1兆853億 | -1.23% |
| 03/19 | 7,920 | 7,940 | 7,900 | 7,910 | 0% | 1,188,900 | 1兆895億 | -0.93% |
| 03/18 | 7,930 | 7,930 | 7,910 | 7,910 | -0.13% | 1,038,600 | 1兆895億 | -0.99% |
| 03/17 | 7,910 | 7,940 | 7,900 | 7,920 | 0% | 1,020,900 | 1兆908億 | -0.91% |
| 03/16 | 7,920 | 7,970 | 7,910 | 7,920 | 0% | 947,500 | 1兆908億 | -0.96% |
| 03/13 | 7,960 | 7,970 | 7,820 | 7,920 | -0.63% | 2,333,600 | 1兆908億 | -1.01% |
| 03/12 | 7,980 | 7,990 | 7,970 | 7,970 | -0.25% | 697,300 | 1兆977億 | -0.42% |
| 03/11 | 7,980 | 8,000 | 7,980 | 7,990 | +0.13% | 652,700 | 1兆1005億 | -0.22% |
| 03/10 | 7,980 | 8,000 | 7,980 | 7,980 | 0% | 650,700 | 1兆991億 | -0.4% |
| 03/09 | 8,010 | 8,010 | 7,980 | 7,980 | -0.25% | 794,300 | 1兆991億 | -0.37% |
| 03/06 | 8,010 | 8,030 | 8,000 | 8,000 | -0.37% | 572,700 | 1兆1019億 | 0% |
| 03/05 | 8,010 | 8,040 | 8,000 | 8,030 | +0.37% | 536,500 | 1兆1060億 | +0.39% |
| 03/04 | 7,990 | 8,010 | 7,980 | 8,000 | +0.25% | 756,600 | 1兆1019億 | +0.06% |
| 03/03 | 8,000 | 8,000 | 7,980 | 7,980 | 0% | 692,400 | 1兆991億 | -0.11% |
| 03/02 | 7,980 | 8,000 | 7,970 | 7,980 | +0.13% | 915,700 | 1兆991億 | -0.05% |
| 02/28 | 7,980 | 7,990 | 7,970 | 7,970 | -0.25% | 1,855,500 | 1兆977億 | -0.1% |
| 02/27 | 7,990 | 8,000 | 7,980 | 7,990 | -0.13% | 639,100 | 1兆1005億 | +0.2% |
| 02/26 | 8,010 | 8,010 | 8,000 | 8,000 | 0% | 626,600 | 1兆1019億 | +0.4% |
| 02/25 | 8,000 | 8,010 | 8,000 | 8,000 | -0.12% | 669,000 | 1兆1019億 | +0.45% |
| 02/21 | （IR情報）16:00 執行役の異動に関するお知らせ |
| 02/21 | （IR情報）16:00 代表執行役の異動に関するお知らせ |
| 02/21 | 8,020 | 8,020 | 8,010 | 8,010 | -0.12% | 242,400 | 1兆1032億 | +0.68% |
| 02/20 | 8,020 | 8,030 | 8,010 | 8,020 | 0% | 602,300 | 1兆1046億 | +0.92% |
| 02/19 | 8,030 | 8,030 | 8,020 | 8,020 | 0% | 409,400 | 1兆1046億 | +1.03% |
| 02/18 | 8,020 | 8,030 | 8,020 | 8,020 | 0% | 589,000 | 1兆1046億 | +1.1% |
| 02/17 | 8,020 | 8,030 | 8,020 | 8,020 | -0.12% | 405,800 | 1兆1046億 | +1.15% |
| 02/14 | （IR情報）15:00 支配株主である株式会社日立製作所による当社株式に対する公開買付けの実施に関する賛同の意見表明及び応募推奨等に関するお知らせ |
| 02/14 | 8,030 | 8,040 | 8,020 | 8,030 | 0% | 609,200 | 1兆1060億 | +1.38% |
| 02/13 | 8,030 | 8,040 | 8,020 | 8,030 | 0% | 384,700 | 1兆1060億 | +1.5% |
| 02/12 | 8,030 | 8,040 | 8,020 | 8,030 | +0.12% | 830,300 | 1兆1060億 | +1.58% |
| 02/10 | 8,010 | 8,030 | 8,010 | 8,020 | 0% | 494,800 | 1兆1046億 | +1.6% |
| 02/07 | 8,010 | 8,030 | 8,010 | 8,020 | +0.12% | 809,400 | 1兆1046億 | +1.74% |
| 02/06 | 8,010 | 8,030 | 8,010 | 8,010 | 0% | 972,400 | 1兆1032億 | +1.74% |
| 02/05 | 8,080 | 8,100 | 8,000 | 8,010 | -0.62% | 1,758,600 | 1兆1032億 | +1.86% |
| 02/04 | 8,130 | 8,140 | 8,060 | 8,060 | -0.49% | 2,056,100 | 1兆1101億 | +2.62% |
| 02/03 | 8,050 | 8,250 | 8,050 | 8,100 | +2.27% | 3,482,200 | 1兆1156億 | +3.29% |
| 01/31 | （IR情報）15:30 2020年3月期期末配当予想の修正(無配)に関するお知らせ |
| 01/31 | （IR情報）15:30 支配株主である株式会社日立製作所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 |
| 01/31 | 7,790 | 8,020 | 7,780 | 7,920 | +2.33% | 677,000 | 1兆908億 | +1.2% |
| 01/30 | 8,020 | 8,030 | 7,690 | 7,740 | -2.76% | 1,200,200 | 1兆660億 | -1.04% |
| 01/29 | （IR情報）15:30 2020年3月期第3四半期決算説明会資料 |
| 01/29 | （IR情報）15:30 2020年3月期第3四半期決算短信〔IFRS〕(連結) |
| 01/29 | 7,880 | 7,970 | 7,840 | 7,960 | +0.25% | 524,200 | 1兆964億 | +1.78% |
| 01/28 | 7,820 | 7,970 | 7,760 | 7,940 | +1.28% | 776,100 | 1兆936億 | +1.72% |
| 01/27 | 7,770 | 7,900 | 7,690 | 7,840 | -0.38% | 696,600 | 1兆798億 | +0.63% |
| 01/24 | 7,830 | 7,890 | 7,770 | 7,870 | +0.51% | 481,400 | 1兆840億 | +1.21% |
| 01/23 | 7,830 | 7,860 | 7,780 | 7,830 | -0.25% | 381,400 | 1兆784億 | +0.86% |
| 01/22 | 7,800 | 7,890 | 7,750 | 7,850 | 0% | 658,000 | 1兆812億 | +1.26% |
| 01/21 | 7,890 | 7,930 | 7,830 | 7,850 | -0.51% | 426,500 | 1兆812億 | +1.46% |
| 01/20 | 7,860 | 7,960 | 7,850 | 7,890 | +1.02% | 314,600 | 1兆867億 | +2.2% |
| 01/17 | 7,900 | 7,900 | 7,760 | 7,810 | +0.26% | 388,700 | 1兆757億 | +1.42% |
| 01/16 | 7,710 | 7,820 | 7,710 | 7,790 | 0% | 374,300 | 1兆729億 | +1.41% |
| 01/15 | 7,890 | 7,900 | 7,760 | 7,790 | -1.27% | 353,900 | 1兆729億 | +1.67% |
| 01/14 | 7,950 | 7,980 | 7,850 | 7,890 | -0.38% | 304,600 | 1兆867億 | +3.23% |
| 01/10 | 7,810 | 7,940 | 7,800 | 7,920 | +1.15% | 265,300 | 1兆908億 | +4.02% |
| 01/09 | 7,800 | 7,850 | 7,760 | 7,830 | +0.77% | 381,800 | 1兆784億 | +3.24% |
| 01/08 | 7,860 | 7,870 | 7,640 | 7,770 | -1.52% | 573,600 | 1兆702億 | +2.83% |
| 01/07 | 7,830 | 7,920 | 7,800 | 7,890 | +1.81% | 338,700 | 1兆867億 | +4.77% |
| 01/06 | 7,740 | 7,780 | 7,710 | 7,750 | +0.13% | 424,700 | 1兆674億 | +3.36% |
| 2019 |
| 12/30 | 7,710 | 7,760 | 7,700 | 7,740 | -0.51% | 162,500 | 1兆660億 | +3.66% |
| 12/27 | 7,790 | 7,820 | 7,730 | 7,780 | 0% | 151,100 | 1兆716億 | +4.75% |
| 12/26 | 7,780 | 7,790 | 7,740 | 7,780 | +0.26% | 146,000 | 1兆716億 | +5.31% |
| 12/25 | 7,720 | 7,760 | 7,700 | 7,760 | 0% | 94,300 | 1兆688億 | +5.62% |
| 12/24 | 7,700 | 7,760 | 7,650 | 7,760 | +0.65% | 167,400 | 1兆688億 | +6.16% |
| 12/23 | 7,810 | 7,810 | 7,700 | 7,710 | -1.03% | 275,700 | 1兆619億 | +6.05% |
| 12/20 | 7,800 | 7,840 | 7,700 | 7,790 | +0.65% | 536,100 | 1兆729億 | +7.64% |
| 12/19 | 7,600 | 7,760 | 7,600 | 7,740 | +2.11% | 480,400 | 1兆660億 | +7.53% |
| 12/18 | 7,710 | 7,710 | 7,520 | 7,580 | +0.26% | 404,500 | 1兆440億 | +5.93% |
| 12/17 | 7,530 | 7,570 | 7,480 | 7,560 | +1.2% | 272,600 | 1兆413億 | +6.16% |
| 12/16 | 7,550 | 7,550 | 7,450 | 7,470 | -1.06% | 269,200 | 1兆289億 | +5.45% |
| 12/13 | 7,670 | 7,680 | 7,500 | 7,550 | 0% | 460,400 | 1兆399億 | +7.06% |
| 12/12 | 7,530 | 7,610 | 7,500 | 7,550 | +1.07% | 323,300 | 1兆399億 | +7.53% |
