| 2020 |
| 06/12 | 17:30 当社子会社(株式会社加地テック)の2021年3月期通期個別業績に関するお知らせ |
| 06/12 | 16:00 三井E&S造船株式会社の艦艇事業の譲渡に関する協議開始のお知らせ |
| 06/12 | 556 | 567 | 536 | 565 | -4.24% | 1,853,300 | 469億5077万 | -0.7% |
| 06/11 | 622 | 625 | 585 | 590 | -8.1% | 1,295,100 | 490億2824万 | +3.33% |
| 06/10 | 636 | 650 | 632 | 642 | -1.08% | 528,600 | 533億4937万 | +12.43% |
| 06/09 | 662 | 670 | 637 | 649 | -1.37% | 824,500 | 539億3106万 | +13.86% |
| 06/08 | 636 | 671 | 635 | 658 | +5.96% | 1,070,700 | 546億7895万 | +15.64% |
| 06/05 | 595 | 626 | 589 | 621 | +5.97% | 730,100 | 516億430万 | +9.91% |
| 06/04 | 616 | 623 | 580 | 586 | -2.17% | 931,100 | 486億9584万 | +4.09% |
| 06/03 | 597 | 602 | 584 | 599 | +3.28% | 719,500 | 497億7613万 | +6.58% |
| 06/02 | 565 | 586 | 556 | 580 | +4.5% | 615,700 | 481億9725万 | +3.57% |
| 06/01 | 574 | 579 | 551 | 555 | -1.77% | 481,700 | 461億1978万 | -0.54% |
| 05/29 | 580 | 580 | 561 | 565 | -4.07% | 1,103,700 | 469億5077万 | +1.44% |
| 05/28 | 592 | 608 | 576 | 589 | +1.03% | 986,100 | 489億4514万 | +5.94% |
| 05/27 | 551 | 588 | 551 | 583 | +7.17% | 732,100 | 484億4655万 | +5.23% |
| 05/26 | 530 | 550 | 524 | 544 | +4.62% | 646,200 | 452億570万 | -1.45% |
| 05/25 | 525 | 530 | 517 | 520 | +0.97% | 382,000 | 432億1133万 | -5.8% |
| 05/22 | 523 | 528 | 509 | 515 | -3.01% | 623,400 | 427億9583万 | -7.04% |
| 05/21 | 527 | 546 | 527 | 531 | +0.76% | 492,700 | 441億2541万 | -4.5% |
| 05/20 | 524 | 534 | 518 | 527 | -1.31% | 464,400 | 437億9302万 | -5.39% |
| 05/19 | 517 | 538 | 516 | 534 | +7.88% | 855,700 | 443億7471万 | -4.47% |
| 05/18 | 489 | 499 | 481 | 495 | -0.4% | 615,900 | 411億3386万 | -11.45% |
| 05/15 | 507 | 511 | 485 | 497 | +0.81% | 895,000 | 413億6万 | -11.41% |
| 05/14 | 530 | 531 | 490 | 493 | -8.7% | 1,321,700 | 409億6766万 | -12.28% |
| 05/13 | 15:00 連結子会社の異動(株式譲渡)に関する基本合意書締結のお知らせ |
| 05/13 | 581 | 592 | 536 | 540 | -12.76% | 1,380,900 | 448億7330万 | -3.91% |
| 05/12 | 16:00 連結決算における特別利益及び特別損失計上並びに個別決算における特別損失の計上及び繰延税金資産の取崩しに関するお知らせ |
| 05/12 | 16:00 2020年3月期決算短信〔日本基準〕(連結) |
| 05/12 | 637 | 641 | 615 | 619 | -2.52% | 567,300 | 514億3810万 | +10.54% |
| 05/11 | 627 | 640 | 618 | 635 | +3.59% | 470,100 | 527億6768万 | +14.41% |
| 05/08 | 604 | 617 | 595 | 613 | +3.2% | 435,700 | 509億3951万 | +11.25% |
| 05/07 | 596 | 605 | 589 | 594 | -2.14% | 429,200 | 493億6063万 | +8.39% |
| 05/01 | 610 | 614 | 600 | 607 | -1.62% | 898,100 | 504億4092万 | +11.17% |
| 04/30 | 15:00 固定資産の譲渡及び繰延税金負債の取崩しに関するお知らせ |
| 04/30 | 600 | 627 | 587 | 617 | +7.87% | 683,100 | 512億7190万 | +13.63% |
| 04/28 | 573 | 583 | 561 | 572 | +0.18% | 394,500 | 475億3246万 | +5.54% |
| 04/27 | 556 | 573 | 552 | 571 | +3.25% | 472,500 | 474億4936万 | +5.94% |
| 04/24 | 558 | 564 | 546 | 553 | -0.36% | 484,500 | 459億5359万 | +3.36% |
| 04/23 | 16:00 連結子会社(孫会社)等の株式譲渡に関するお知らせ |
| 04/23 | 527 | 558 | 527 | 555 | +7.14% | 625,600 | 461億1978万 | +5.11% |
| 04/22 | 521 | 528 | 511 | 518 | -2.08% | 755,200 | 430億4513万 | -1.15% |
| 04/21 | 543 | 549 | 528 | 529 | -4.34% | 558,000 | 439億5922万 | +1.15% |
| 04/20 | 527 | 553 | 526 | 553 | +2.98% | 495,900 | 459億5359万 | +5.74% |
| 04/17 | 529 | 547 | 524 | 537 | +1.51% | 1,035,900 | 446億2401万 | +2.68% |
| 04/16 | 524 | 531 | 509 | 529 | -2.76% | 898,900 | 439億5922万 | +0.38% |
| 04/15 | 573 | 573 | 538 | 544 | -6.69% | 704,800 | 452億570万 | +1.87% |
| 04/14 | 556 | 586 | 543 | 583 | +5.23% | 509,600 | 484億4655万 | +7.76% |
| 04/13 | 553 | 569 | 550 | 554 | -2.12% | 368,100 | 460億3668万 | +1.28% |
| 04/10 | 571 | 573 | 551 | 566 | -0.35% | 485,900 | 470億3387万 | +1.25% |
| 04/09 | 548 | 574 | 536 | 568 | +5.58% | 534,800 | 472億7万 | -0.53% |
| 04/08 | 559 | 559 | 517 | 538 | -0.55% | 645,100 | 447億710万 | -7.56% |
| 04/07 | 541 | 547 | 513 | 541 | +3.84% | 636,400 | 449億5640万 | -8.92% |
| 04/06 | 490 | 527 | 476 | 521 | +6.33% | 958,800 | 432億9443万 | -13.88% |
| 04/03 | 490 | 511 | 481 | 490 | -1.01% | 706,800 | 407億1837万 | -20.33% |
| 04/02 | 480 | 514 | 473 | 495 | 0% | 1,025,300 | 411億3386万 | -21.18% |
| 04/01 | 514 | 541 | 487 | 495 | -4.99% | 1,125,500 | 411億3386万 | -22.78% |
| 03/31 | 533 | 562 | 512 | 521 | -3.34% | 1,168,300 | 432億9443万 | -20.46% |
| 03/30 | 539 | 562 | 503 | 539 | -2.53% | 1,391,000 | 447億9020万 | -19.43% |
| 03/27 | 15:00 特別損益(関係会社株式売却損益)計上に関するお知らせ |
| 03/27 | 570 | 590 | 541 | 553 | +1.84% | 1,149,400 | 459億5359万 | -18.91% |
| 03/26 | 548 | 576 | 539 | 543 | -6.06% | 1,164,800 | 451億2260万 | -21.87% |
| 03/25 | 548 | 582 | 533 | 578 | +13.78% | 1,431,100 | 480億3105万 | -18.36% |
| 03/24 | 465 | 512 | 453 | 508 | +11.16% | 1,559,600 | 422億1414万 | -29.64% |
| 03/23 | 378 | 457 | 378 | 457 | +21.22% | 1,547,000 | 379億7611万 | -38.08% |
| 03/19 | 471 | 485 | 377 | 377 | -17.51% | 1,644,900 | 313億2821万 | -50.2% |
| 03/18 | 503 | 533 | 451 | 457 | -9.15% | 1,884,500 | 379億7611万 | -41.49% |
| 03/17 | 504 | 535 | 487 | 503 | -2.14% | 2,043,100 | 417億9865万 | -37.13% |
| 03/16 | 573 | 599 | 511 | 514 | -9.03% | 1,595,900 | 427億1274万 | -37.16% |
| 03/13 | 570 | 593 | 551 | 565 | -10.32% | 1,221,300 | 469億5077万 | -32.42% |
| 03/12 | 684 | 690 | 627 | 630 | -10% | 1,328,100 | 523億5219万 | -25.97% |
| 03/11 | 720 | 747 | 694 | 700 | -2.78% | 1,074,000 | 581億6910万 | -18.89% |
| 03/10 | 710 | 736 | 683 | 720 | -4.13% | 1,133,600 | 598億3107万 | -17.43% |
| 03/09 | 802 | 807 | 741 | 751 | -11.12% | 1,123,600 | 624億713万 | -14.66% |
| 03/06 | 837 | 862 | 827 | 845 | -1.74% | 1,050,100 | 702億1841万 | -4.84% |
| 03/05 | 855 | 868 | 852 | 860 | +1.42% | 801,200 | 714億6489万 | -3.7% |
| 03/04 | 817 | 861 | 815 | 848 | +2.29% | 1,085,600 | 704億6771万 | -5.57% |
| 03/03 | 842 | 858 | 827 | 829 | +0.24% | 1,021,100 | 688億8883万 | -8.19% |
| 03/02 | 776 | 841 | 776 | 827 | +6.57% | 1,196,400 | 687億2263万 | -9.22% |
| 02/28 | 783 | 798 | 768 | 776 | -3.96% | 1,031,000 | 644億8460万 | -15.47% |
| 02/27 | 16:00 太陽光発電事業の売却に関するお知らせ |
| 02/27 | 16:00 千葉工場における造船事業の終了および希望退職者の募集に関するお知らせ |
| 02/27 | 820 | 823 | 801 | 808 | -2.65% | 987,800 | 671億4376万 | -12.84% |
| 02/26 | 822 | 832 | 802 | 830 | -0.36% | 869,300 | 689億7193万 | -11.23% |
| 02/25 | 820 | 837 | 812 | 833 | -3.7% | 747,800 | 692億2123万 | -11.48% |
| 02/21 | 869 | 872 | 862 | 865 | -1.48% | 747,400 | 718億8039万 | -8.66% |
| 02/20 | 883 | 895 | 874 | 878 | +0.34% | 396,400 | 729億6067万 | -7.77% |
| 02/19 | 883 | 892 | 864 | 875 | -0.34% | 599,600 | 727億1137万 | -8.38% |
| 02/18 | 903 | 914 | 876 | 878 | -3.73% | 1,047,400 | 729億6067万 | -8.35% |
| 02/17 | 894 | 915 | 884 | 912 | +0.44% | 568,100 | 757億8602万 | -5% |
| 02/14 | 927 | 928 | 891 | 908 | -2.78% | 988,400 | 754億5363万 | -5.52% |
| 02/13 | 983 | 988 | 920 | 934 | -3.61% | 1,099,400 | 776億1420万 | -2.81% |
| 02/12 | 951 | 970 | 937 | 969 | +2.43% | 894,100 | 805億2265万 | +0.94% |
| 02/10 | 15:00 2020年3月期第3四半期決算短信〔日本基準〕(連結) |
| 02/10 | 935 | 949 | 925 | 946 | -0.73% | 625,600 | 786億1138万 | -1.05% |
| 02/07 | 957 | 957 | 933 | 953 | -0.42% | 502,700 | 791億9307万 | -0.1% |
| 02/06 | 958 | 970 | 941 | 957 | +2.46% | 835,400 | 795億2547万 | +0.63% |
| 02/05 | 16:00 当社子会社(三井海洋開発株式会社)の2019年12月期個別業績に関するお知らせ |
| 02/05 | 949 | 957 | 932 | 934 | +0.76% | 477,800 | 776億1420万 | -1.58% |
| 02/04 | 930 | 932 | 918 | 927 | -0.32% | 416,700 | 770億3251万 | -2.01% |
| 02/03 | 15:30 投資有価証券売却益(特別利益)の計上に関するお知らせ |
| 02/03 | 904 | 931 | 900 | 930 | -0.11% | 789,400 | 772億8180万 | -1.69% |
| 01/31 | 946 | 949 | 922 | 931 | -2% | 800,000 | 773億6490万 | -1.48% |
| 01/30 | 16:00 当社子会社(三井海洋開発株式会社)における特別損失の計上及び業績予想の修正に関するお知らせ |
| 01/30 | 959 | 964 | 926 | 950 | -1.66% | 1,128,600 | 789億4378万 | +0.42% |
| 01/29 | 987 | 993 | 963 | 966 | -1.33% | 539,600 | 802億7336万 | +2.01% |
| 01/28 | 972 | 986 | 962 | 979 | -1.31% | 758,300 | 813億5364万 | +3.38% |
| 01/27 | 985 | 995 | 974 | 992 | -2.27% | 548,700 | 824億3392万 | +4.75% |
| 01/24 | 1,015 | 1,030 | 1,012 | 1,015 | +2.32% | 1,290,800 | 843億4519万 | +7.18% |
| 01/23 | 17:20 子会社株式に対する公開買付けに係る応募契約の締結に関するお知らせ |
| 01/23 | 1,013 | 1,017 | 970 | 992 | -2.84% | 880,300 | 824億3392万 | +4.86% |
| 01/22 | 1,009 | 1,037 | 1,002 | 1,021 | +1.49% | 935,200 | 848億4379万 | +8.04% |
| 01/21 | 998 | 1,023 | 998 | 1,006 | +2.34% | 1,213,000 | 835億9730万 | +6.79% |
| 01/20 | 985 | 999 | 981 | 983 | -0.2% | 527,000 | 816億8603万 | +4.57% |
| 01/17 | 983 | 989 | 967 | 985 | +1.13% | 937,900 | 818億5223万 | +4.9% |
| 01/16 | 968 | 983 | 945 | 974 | +1.99% | 1,079,000 | 809億3815万 | +3.84% |
