| 2020 |
| 06/01 | （IR情報）11:00 当社株式の上場廃止のお知らせ |
| 05/29 | 1,880 | 1,882 | 1,880 | 1,880 | 0% | 4,500 | 367億2655万 | +0.05% |
| 05/28 | 1,881 | 1,883 | 1,880 | 1,880 | 0% | 29,200 | 367億2655万 | +0.05% |
| 05/27 | 1,880 | 1,883 | 1,880 | 1,880 | 0% | 5,100 | 367億2655万 | +0.11% |
| 05/26 | 1,880 | 1,882 | 1,880 | 1,880 | 0% | 9,600 | 367億2655万 | +0.11% |
| 05/25 | 1,880 | 1,881 | 1,880 | 1,880 | 0% | 6,800 | 367億2655万 | +0.11% |
| 05/22 | 1,880 | 1,880 | 1,880 | 1,880 | -0.05% | 900 | 367億2655万 | +0.11% |
| 05/21 | 1,880 | 1,882 | 1,879 | 1,881 | -0.05% | 8,100 | 367億4608万 | +0.16% |
| 05/20 | 1,880 | 1,882 | 1,879 | 1,882 | +0.16% | 10,100 | 367億6562万 | +0.21% |
| 05/19 | 1,879 | 1,880 | 1,878 | 1,879 | 0% | 16,900 | 367億701万 | +0.05% |
| 05/18 | 1,879 | 1,881 | 1,879 | 1,879 | +0.05% | 6,700 | 367億701万 | +0.05% |
| 05/15 | 1,878 | 1,884 | 1,878 | 1,878 | +0.05% | 35,300 | 366億8748万 | 0% |
| 05/14 | 1,877 | 1,885 | 1,876 | 1,877 | 0% | 49,300 | 366億6794万 | -0.05% |
| 05/13 | 1,878 | 1,888 | 1,877 | 1,877 | 0% | 104,300 | 366億6794万 | 0% |
| 05/12 | （IR情報）15:30 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 |
| 05/12 | 1,878 | 1,882 | 1,877 | 1,877 | -0.05% | 36,800 | 366億6794万 | 0% |
| 05/11 | 1,878 | 1,881 | 1,877 | 1,878 | +0.05% | 11,200 | 366億8748万 | +0.11% |
| 05/08 | 1,878 | 1,881 | 1,877 | 1,877 | 0% | 20,200 | 366億6794万 | +0.05% |
| 05/07 | 1,878 | 1,883 | 1,877 | 1,877 | 0% | 15,800 | 366億6794万 | +0.11% |
| 05/01 | 1,877 | 1,883 | 1,877 | 1,877 | +0.11% | 31,700 | 366億6794万 | +0.05% |
| 04/30 | （IR情報）15:00 2020年3月期決算発表延期に関するお知らせ |
| 04/30 | 1,881 | 1,886 | 1,875 | 1,875 | -0.21% | 90,400 | 366億2887万 | 0% |
| 04/28 | 1,881 | 1,886 | 1,879 | 1,879 | 0% | 8,900 | 367億701万 | +0.21% |
| 04/27 | （IR情報）17:30 自己株式の消却に関するお知らせ |
| 04/27 | 1,885 | 1,889 | 1,879 | 1,879 | -0.32% | 8,000 | 367億701万 | +0.21% |
| 04/24 | 1,879 | 1,894 | 1,875 | 1,885 | +0.27% | 69,200 | 368億2422万 | +0.59% |
| 04/23 | 1,884 | 1,889 | 1,877 | 1,880 | 0% | 24,400 | 367億2655万 | +0.43% |
| 04/22 | 1,880 | 1,896 | 1,880 | 1,880 | +0.16% | 11,800 | 367億2655万 | +0.53% |
| 04/21 | 1,877 | 1,891 | 1,874 | 1,877 | +0.11% | 95,000 | 366億6794万 | +0.43% |
| 04/20 | 1,876 | 1,884 | 1,875 | 1,875 | +0.16% | 36,500 | 366億2887万 | +0.43% |
| 04/17 | 1,878 | 1,882 | 1,865 | 1,872 | -0.37% | 126,800 | 365億7026万 | +0.38% |
| 04/16 | 1,877 | 1,886 | 1,877 | 1,879 | +0.11% | 12,600 | 367億701万 | +0.75% |
| 04/15 | 1,876 | 1,893 | 1,875 | 1,877 | +0.11% | 108,400 | 366億6794万 | +0.64% |
| 04/14 | 1,877 | 1,877 | 1,872 | 1,875 | +0.21% | 29,500 | 366億2887万 | +0.54% |
| 04/13 | 1,878 | 1,881 | 1,867 | 1,871 | -0.37% | 56,000 | 365億5073万 | +0.32% |
| 04/10 | （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お知らせ |
| 04/10 | （IR情報）15:00 臨時株主総会開催日及び付議議案の決定に関するお知らせ |
| 04/10 | 1,883 | 1,884 | 1,870 | 1,878 | -0.27% | 35,300 | 366億8748万 | +0.7% |
| 04/09 | 1,875 | 1,885 | 1,872 | 1,883 | +0.32% | 19,200 | 367億8515万 | +0.97% |
| 04/08 | 1,877 | 1,884 | 1,871 | 1,877 | -0.27% | 20,900 | 366億6794万 | +0.64% |
| 04/07 | 1,875 | 1,886 | 1,870 | 1,882 | +0.37% | 23,000 | 367億6562万 | +0.91% |
| 04/06 | 1,867 | 1,884 | 1,867 | 1,875 | +0.48% | 37,400 | 366億2887万 | +0.54% |
| 04/03 | （5%ルール）野村證券（0.01%）ノムラインターナショナルピーエルシー(NOMURA IN…（2.99%）野村アセットマネジメント（0.13%） |
| 04/03 | 1,868 | 1,877 | 1,862 | 1,866 | 0% | 59,000 | 364億5305万 | 0% |
| 04/02 | 1,873 | 1,888 | 1,864 | 1,866 | 0% | 52,100 | 364億5305万 | 0% |
| 04/01 | 1,869 | 1,880 | 1,863 | 1,866 | -0.21% | 65,900 | 364億5305万 | -0.05% |
| 03/31 | 1,862 | 1,872 | 1,861 | 1,870 | +0.54% | 109,200 | 365億3119万 | +0.16% |
| 03/30 | 1,861 | 1,898 | 1,860 | 1,860 | -1.9% | 453,200 | 363億3584万 | -0.43% |
| 03/27 | 1,880 | 1,900 | 1,876 | 1,896 | +2.43% | 140,900 | 370億3911万 | +1.44% |
| 03/26 | 1,867 | 1,897 | 1,851 | 1,851 | -1.8% | 234,700 | 361億6002万 | -0.91% |
| 03/25 | 1,870 | 1,908 | 1,843 | 1,885 | +1.13% | 223,800 | 368億2422万 | +0.86% |
| 03/24 | 1,855 | 1,875 | 1,851 | 1,864 | +0.7% | 178,700 | 364億1398万 | -0.27% |
| 03/23 | （5%ルール）ノムラインターナショナルピーエルシー(NOMURA IN…（5.71%）野村證券（0.19%）野村アセットマネジメント（1.74%） |
| 03/23 | 1,843 | 1,853 | 1,841 | 1,851 | +0.65% | 251,300 | 361億6002万 | -1.02% |
| 03/19 | （5%ルール）情報技術開発（0%） |
| 03/19 | （5%ルール）情報技術開発（15.76%） |
| 03/19 | （5%ルール）K2TOP HD（82.84%） |
| 03/19 | （5%ルール）K2TOP HD（82.84%） |
| 03/19 | 1,843 | 1,853 | 1,829 | 1,839 | +0.05% | 520,400 | 359億2560万 | -1.71% |
| 03/18 | 1,862 | 1,869 | 1,832 | 1,838 | -1.02% | 117,200 | 359億606万 | -1.82% |
| 03/17 | （5%ルール）情報技術開発（0%） |
| 03/17 | （IR情報）10:30 公開買付けの結果並びに親会社及び主要株主である筆頭株主の異動に関するお知らせ |
| 03/17 | 1,820 | 1,862 | 1,815 | 1,857 | +2.37% | 135,700 | 362億7723万 | -0.91% |
| 03/16 | 1,832 | 1,850 | 1,807 | 1,814 | -0.87% | 156,700 | 354億3721万 | -3.25% |
| 03/13 | 1,875 | 1,877 | 1,808 | 1,830 | -2.35% | 203,100 | 357億4978万 | -2.56% |
| 03/12 | 1,879 | 1,882 | 1,872 | 1,874 | -0.21% | 841,200 | 366億933万 | -0.32% |
| 03/11 | （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 |
| 03/11 | 1,875 | 1,882 | 1,875 | 1,878 | +0.37% | 333,200 | 366億8748万 | -0.11% |
| 03/10 | 1,879 | 1,880 | 1,867 | 1,871 | -0.48% | 678,300 | 365億5073万 | -0.48% |
| 03/09 | 1,881 | 1,882 | 1,880 | 1,880 | -0.05% | 438,900 | 367億2655万 | +0.32% |
| 03/06 | 1,881 | 1,882 | 1,881 | 1,881 | 0% | 130,300 | 367億4608万 | +1.4% |
| 03/05 | 1,882 | 1,882 | 1,880 | 1,881 | -0.05% | 105,200 | 367億4608万 | +2.28% |
| 03/04 | （5%ルール）ノムラインターナショナルピーエルシー(NOMURA IN…（3.93%）野村證券（0.14%）野村アセットマネジメント（1.97%） |
| 03/04 | 1,880 | 1,882 | 1,880 | 1,882 | +0.11% | 238,700 | 367億6562万 | +3.07% |
| 03/03 | 1,881 | 1,882 | 1,880 | 1,880 | 0% | 175,000 | 367億2655万 | +3.87% |
| 03/02 | 1,880 | 1,881 | 1,880 | 1,880 | 0% | 230,900 | 367億2655万 | +4.68% |
| 02/28 | 1,880 | 1,882 | 1,880 | 1,880 | 0% | 231,300 | 367億2655万 | +5.44% |
| 02/27 | 1,881 | 1,883 | 1,880 | 1,880 | 0% | 397,400 | 367億2655万 | +6.21% |
| 02/26 | 1,880 | 1,881 | 1,880 | 1,880 | 0% | 265,300 | 367億2655万 | +7% |
| 02/25 | 1,881 | 1,882 | 1,880 | 1,880 | -0.05% | 311,100 | 367億2655万 | +7.8% |
| 02/21 | 1,882 | 1,882 | 1,881 | 1,881 | 0% | 116,600 | 367億4608万 | +8.67% |
| 02/20 | （5%ルール）大和証券投資信託委託（3.11%） |
| 02/20 | 1,882 | 1,883 | 1,880 | 1,881 | 0% | 486,800 | 367億4608万 | +9.62% |
| 02/19 | （5%ルール）ノムラインターナショナルピーエルシー(NOMURA IN…（3.09%）野村證券（0.15%）野村アセットマネジメント（1.97%） |
| 02/19 | 1,881 | 1,882 | 1,881 | 1,881 | 0% | 227,200 | 367億4608万 | +10.52% |
| 02/18 | 1,881 | 1,882 | 1,881 | 1,881 | +0.05% | 674,500 | 367億4608万 | +11.5% |
| 02/17 | 1,881 | 1,882 | 1,880 | 1,880 | 0% | 513,300 | 367億2655万 | +12.44% |
| 02/14 | 1,881 | 1,882 | 1,880 | 1,880 | -0.05% | 616,400 | 367億2655万 | +13.46% |
| 02/13 | 1,881 | 1,882 | 1,881 | 1,881 | 0% | 253,300 | 367億4608万 | +14.77% |
| 02/12 | 1,881 | 1,883 | 1,881 | 1,881 | +0.05% | 420,000 | 367億4608万 | +15.9% |
| 02/10 | 1,881 | 1,882 | 1,880 | 1,880 | -0.11% | 235,200 | 367億2655万 | +17.06% |
| 02/07 | （5%ルール）情報技術開発（15.91%） |
| 02/07 | （5%ルール）情報技術開発（15.76%） |
| 02/07 | 1,881 | 1,882 | 1,880 | 1,882 | 0% | 571,400 | 367億6562万 | +18.36% |
| 02/06 | （5%ルール）情報技術開発（0%） |
| 02/06 | （5%ルール）情報技術開発（15.91%） |
| 02/06 | （5%ルール）大和証券投資信託委託（5.12%） |
| 02/06 | 1,882 | 1,884 | 1,880 | 1,882 | -0.05% | 615,400 | 367億6562万 | +19.49% |
| 02/05 | 1,880 | 1,883 | 1,879 | 1,883 | +0.27% | 1,222,700 | 367億8515万 | +20.78% |
| 02/04 | 1,880 | 1,881 | 1,878 | 1,878 | -0.11% | 1,257,500 | 366億8748万 | +21.71% |
| 02/03 | 1,882 | 1,883 | 1,879 | 1,880 | +10.33% | 3,294,000 | 367億2655万 | +23.04% |
| 01/31 | 1,704 | 1,704 | 1,704 | 1,704 | +21.37% | 41,200 | 332億8832万 | +12.7% |
| 01/30 | （IR情報）15:00 2020年3月期の期末配当予想の修正に関するお知らせ |
| 01/30 | （IR情報）15:00 MBOの実施及び応募の推奨に関するお知らせ |
| 01/30 | （IR情報）15:00 株式会社K2TOPホールディングスによる株式会社豆蔵ホールディングス(証券コード3756)に対する公開買付けの開始に関するお知らせ |
| 01/30 | （IR情報）15:00 2020年3月期第3四半期決算短信〔日本基準〕(連結) |
| 01/30 | 1,509 | 1,522 | 1,383 | 1,404 | -6.34% | 698,500 | 274億2770万 | -6.52% |
| 01/29 | 1,558 | 1,567 | 1,477 | 1,499 | -2.85% | 441,700 | 292億8356万 | -0.33% |
| 01/28 | 1,462 | 1,546 | 1,462 | 1,543 | +3.49% | 335,600 | 301億4312万 | +2.8% |
| 01/27 | 1,480 | 1,517 | 1,452 | 1,491 | -2.55% | 294,600 | 291億2728万 | -0.4% |
| 01/24 | 1,562 | 1,573 | 1,521 | 1,530 | -1.42% | 230,100 | 298億8916万 | +2.41% |
| 01/23 | 1,550 | 1,561 | 1,521 | 1,552 | -0.32% | 230,800 | 303億1894万 | +4.23% |
| 01/22 | 1,555 | 1,594 | 1,550 | 1,557 | +0.13% | 329,000 | 304億1661万 | +4.92% |
| 01/21 | 1,556 | 1,570 | 1,544 | 1,555 | -0.58% | 194,800 | 303億7754万 | +5.21% |
| 01/20 | 1,540 | 1,578 | 1,535 | 1,564 | +2.02% | 481,100 | 305億5336万 | +6.11% |
| 01/17 | 1,544 | 1,544 | 1,518 | 1,533 | +0.2% | 151,800 | 299億4776万 | +4.36% |
| 01/16 | 1,538 | 1,549 | 1,505 | 1,530 | +0.33% | 240,800 | 298億8916万 | +4.29% |
| 01/15 | 1,520 | 1,538 | 1,502 | 1,525 | +1.19% | 290,400 | 297億9148万 | +4.24% |
| 01/14 | 1,520 | 1,534 | 1,500 | 1,507 | +0.33% | 219,500 | 294億3984万 | +3.08% |
| 01/10 | 1,500 | 1,505 | 1,483 | 1,502 | +0.6% | 236,900 | 293億4217万 | +2.81% |
| 01/09 | 1,462 | 1,496 | 1,462 | 1,493 | +3.61% | 204,100 | 291億6635万 | +2.33% |
| 01/08 | 1,462 | 1,470 | 1,404 | 1,441 | -2.64% | 371,100 | 281億5051万 | -1.17% |
| 01/07 | 1,450 | 1,489 | 1,449 | 1,480 | +2.07% | 189,900 | 289億1239万 | +1.44% |
| 01/06 | 1,460 | 1,465 | 1,442 | 1,450 | -1.63% | 162,000 | 283億2633万 | -0.75% |
| 2019 |
| 12/30 | 1,506 | 1,515 | 1,466 | 1,474 | -2.12% | 153,700 | 287億9517万 | +0.75% |
| 12/27 | 1,480 | 1,515 | 1,473 | 1,506 | +1.14% | 195,800 | 294億2031万 | +2.87% |
| 12/26 | 1,498 | 1,498 | 1,469 | 1,489 | -0.33% | 248,900 | 290億8821万 | +1.64% |
